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Topic: 1st Year Physics Multiple Choice Questions 1st Year Physics Notes  (Read 12839 times)
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« on: July 12, 2010, 02:32:12 PM »

The Scope of Physics

1. The branch of physical science, which deals with interaction of matter and energy, is called __________.
(Physics, Chemistry, Biology)
2. The new era of modern physics began near the end of __________.
(17th century, 18th century, 19th century)
3. Screw and lever were invented by __________.
(Newton, Huygen, Archimedes)
4. Phythagoras is famous in __________.
(Physics, Chemistry, None of these)
5. In the field of research the strong incentive comes from __________.
(Bible, Quran, Ingeel)
6. Number of ayah which are taken from Surah Nooh for our book are __________.
(11 and 12, 13 and 14, 15 and 16)
7. Number of ayah taken from Surah ‘Al Imran’ __________.
(170 and171, 180 and 181, 190 and 191)
8. Al-Khawarizmi was the founder of __________.
(Microbiology, Analytical Algebra, Physics)
9. Logarithm was invented by __________.
(Al- Beruni, Al-Khawarizmi, Ibn-e- Sina)
10. In Muslim world the man was both a poet and a mathematician is __________.
(Omer Khyyam, Al-Khawarizmi, Al-Beruni)
11. Kitabul Manazir was written by __________.
(Yaqoob Bin Ishaq, Ibn-e-Sina, Ibn-al-Haitham)
12. Pin hole camera was invented by __________.
(Ibn-al-Haithan, Al-Razi, Al-Beruni)
13. Ibn-e- Sina was famous for his research in the field of __________.
(Medicine, mathematics, physics)
14. Muslim scientist who wrote about 200 books is __________.
(Abn-e-Sina, Al-Razi, Omer khyyam)
15. 20th century is called the century of __________.
(Physics, Chemistry, Mathematics)
16. Dimension of acceleration is __________.
(LT-1, LT-2, L-1T)
17. The significant figures of 16, 7 are __________.
(7, 6 and 7, 1, 6 and 7)
18. The author of Kitab-ul-Masoodi was __________.
(Al-Beruni, Ibn-e-Sina, Ibn-al-Haitham)
19. The author of Al-Qanun-Fil-Tib was __________.
(Al-Beruni, Ibn-e-Sina, Ibn-al-Haitham)
20. Alsh-Shifa an encyclopedia of philosophy was written by __________.
(Al-Beruni, Ibn-e-Sina, Abn-al-Haitham)
21. Atomic clock is a (briefly) radio transmitter giving out short waves of wavelength about __________.
(3cm, 3m, 3A°)
22. The time interval occupied 9192631770 cycles of a specified energy change in the Cesium atom is taken as equal to one __________.
(second, minute, hour)
23. The ampere is the unit of __________.
(time, electric current)
24. Mole is the amount of substance of a system which contains as many elementary entities as there are atom in 0.012 kg of __________.
(Cesium – 133, Uranium – 298, Carbon – 12)
25. The dimension of volume is __________.
(L2, L-2, L3)
26. The dimension of velocity is __________.
(LT-2, L-1L2, LT-1)
27. The dimension of linear momentum is __________.
(MLT-1, ML-1T, M-1LT)
28. The number of 6408.2 has __________ significant figure(s).
(one, four, five)
29. The circumference of a circle of radius 3.5 cm is __________.
(21.99cm, 38.49 cm,179.62 cm)
30. The volume of a sphere of radius 3.5 cm is __________.
(21.99 cm3, 38.49cm3, 179.62cm3)
31. Al Khawarizmi was the founder of __________.
(Decimal system, Geomtery, Analytical Algebra)
32. A number, which is reasonably reliable, is called __________.
(Ratio, Function, Significant Figure)
33. Electromagnetic wave theory of light is proposed by __________.
(Maxwell, Newton, Huygen)
34. Wave mechanics were introduced by __________.
(De-Broglie, Maxwell, Newton)
35. Natural Radioactivity was discovered by __________.
(Madam Curie, Bacquerel, Max-Plank)
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« Reply #1 on: July 12, 2010, 02:32:24 PM »

Chapter 2 - Scalars and Vectors

1. Physical quantity, which can be completely specified by its magnitude only, is called __________.

(Scalars, Vectors, None of above)

2. Physical quantity, which can be completely specified by its magnitude as well as direction, is called __________.

(Scalars, Vectors, None of Above)

3. Two or more than two scalars measured in the same system of units are equal only if they have the __________.

(Same Magnitude, Same magnitude and direction, Same direction)

4. Vectors are denoted by __________.

(or a, b, c)

5. Magnitude of vectors is denoted by __________.

(or a, b, c)

6. Two vectors are equal without any consideration of their initial point only if they have __________.

(Same magnitude, Same magnitude and similar direction, Same direction)

7. The tail end of a vector line is called __________.

(Initial point of the vector, terminal point of the vector, final point of the vector)

8. The magnitude of a vector is always treated as __________.

(Negative, Non-Negative, Negative and Positive both)

9. In parallelogram law of vector addition the resultant of the vector is represented by __________.

(Diagonal of the parallelogram, any adjacent side of the parallelogram, opposite side of the parallelogram)

10. Law of cosine is normally used to determine the __________.

(Magnitude of resultant, direction of resultant, both magnitude and direction of the resultant)

11. The product of number “m” and vectorgenerates a new vector. The magnitude of the product is represented by __________.

(B = |m|A, A = |m|B, |m| = BA)

12. Law of Sine is normally used for determination of __________.

(Magnitude of resultant, Direction of Resultant, Both Magnitude and Direction)

13. m= m is governed by __________.

(commutative law for multiplication, Associative law for multiplication, Distributive law for multiplication)

14. m= (mn)is governed by __________.

(Commutative law for multiplication, Associative law for multiplication, Distributive law for multiplication)

15. (m + n) = m = n follows __________.

(Commutative law, Associative Law, Distributive Law)

16. The division of a vector by a positive number n is given by= |m| where m = 1/n the direction of is __________.

(same as , oppoosite to , parallel to itself)

17. The division of vector by a negative number n is given by = |m| where m = 1/n the direction theis __________.

(same as , oppoosite to , parallel to itself)

18. A unit vector is represented by __________.

(,,)

19. The unit vectors are __________.

(parallel to each other, perpendicular to each other, none of the above)

20. The sum of rectangular components vector produces the original vector, which is represented by __________.

21. The magnitude of vectoris given by __________.

, , )

22. The dot product of unit vectors and is equal to __________.

(i, , )

23. The dot product of unit vectors and is equal to __________.

(

24. The cross product of unit vector and is equal to __________.

(0, 1, )

25. The vector product of and is ___________.

(-,, r)

26. A vector which can be displaced parallel to it self and applied at any point is known as __________.

(Null vector, Free Vector, Position Vector)

27. A vector, which can represent the position of a point with respect to some fixed point in coordinate system, is called __________.

(Null Vector, Free Vector, Position Vector)

28. If two vectors which are equal in magnitude but opposite in direction, their combination produces __________.

(Null Vector, Free Vector, Position Vector)

29. The horizontal component of vector is given by __________.

(A cos q, A sin q, A tan q)

30. The vertical component of vector is given by __________.

(Acosq, Asinq, Atan)


31. The product of magnitude of two vectors and cosine of the angle between them is called __________.

(Scalar Product, Vector Product, None of the above)

32. The product of magnitude of two vectors and sine of the angle between them is called __________.

(Scalar Product, Vector Product, None of the above)

33. Ifandare the two vectors then __________.

34. Two or more vectors are added by __________.

(Head to tail rule, simple addition, none of these)

35. The angle between the horizontal and vertical component of a vector is __________.

(90°, 0°, 180°)

36. If the resultant of two forces of magnitude 3N and 4N is 5N then the angle between these two forces is __________.

(0°, 45°, 90°)

37. The dot product of two vectors is zero when they are __________.

(In the same Direction, Perpendicular to each other, In the opposite direction)

38. If the cross product of two vectors is zero they are __________.

(Parallel to each other, Perpendicular to each other, Opposite in direction)

39. Ifare __________.

(Parallel to Each other, either A or B is a null vector, perpendicular to each other)

40. The cross product of two vector is a __________.

(Scalar, Vector, None of these)
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« Reply #2 on: July 12, 2010, 02:32:39 PM »

Chapter 3 - Motion

1. The change of position of a body in a particular direction is called its __________.

(Displacement, Velocity, Acceleration)

2. The change of displacement with respect to the time is called __________.

(Speed, Velocity, Acceleration)

3. The rate of change of position in a particular direction is called __________.

Displacement, Velocity, Acceleration)

4. The total change in displacement divided by the total change in time of body is called its __________.

(Average Velocity, Instantaneuous Velocity, Uniform Velocity)

5. The change of displacement in a very small interval of time (time tends to zero) of a body is called its __________.

(Average Velocity, Instantaneous Velocity, Uniform Velocity)

6. When a body undergoes an acceleration then __________.

(Its speed increases, Its velocity increases, It falls toward the earth)

7. A force acts on a body that is free to move. We known that magnitude and direction of the force and the mass of the body. Newton’s second law of motion enables us to determine the body’s __________.

(Acceleration, Speed, Velocity)

8. A hole is drilled through the earth along the diameter and a stone dropped into it. When the stone is at the centre of the earth it has __________.

(Mass, Weight, Acceleration)

9. A force of 3N acts perpendicularly to a force of 4N. Their resultant has magnitude of __________.

(1N, 5N, 7N)

10. In __________ of the following examples the motion of the car not accelerated.

(Car turns a corner at constant speed of 29km/hr, Car climbs a steep hill with its speed dropping from 60 km/hr at the bottom to 15 km/hr at the top, Car climbs a steep hill at the constant speed of 40km/hr)

11. The algebraic sign of acceleration depends on __________.

(The choice of direction, Whether an object is speeding up or slowing down, The position of the object)

12. The acceleration due to gravity __________.

(has the same value every where in space, has the same value every where on the earth, varies with the latitude on the earth)

13. Swimming is possible because of __________ law of motion.

(First, Second, Third)

14. A vehicle is moving horizontally at 30m/s. It is then accelerated uniformly in the same direction at 0.5 m/s2 for 30 seconds. Its final speed is __________.

(180 m/s, 45.0 m/s, 90 m/s)

15. An object falls freely from rest with an acceleration of 10m/s2 (approximately). Then the distance traveled after 0.6 second is __________.

(1.8 m, 18.0 m, 3.6 m)

16. A trolley of mass 1.0kg travelling at 3m/s, collides with second trolley which is stationary. On collision the two trolley join together and continue to travel in the original direction with a common speed of 1.0 m/s. __________is the mass of second trolley.

(0.33kg, 0.67kg, 2.0kg)

17. A steel ball is dropped in a viscous fluid. It will __________.

(move down with uniform velocity, remain stationary, fall with uniform acceleration of 9.8 m/s2)

18. A trolley of mass 2kg moves with constant acceleration on a smooth horizontal surface. Its speed changes from 4m/s to 16 m/s during 6.0 seconds. The trolley has an acceleration of __________m/s2.

(0.5 , 0.66, 2)

19. During a stop a car comes to rest from a speed of 10 m/s in 5 seconds. Assuming a steady deceleration during this time, it will travel a distance of __________.

(2m, 10m, 25m)

20. A ball is dropped from a tall building falls to the ground. Ball reaches the ground in 3.0 seconds. __________ is the height of the building.

(15m, 30m, 45m)

21. A trolley of mass 2kg is moving at 15m/s. It collides head on with another trolley of mass 1kg initially at rest. The first trolley sticks with second one. __________ is the speed of both trolleys after collision.

(5m/s, 7.5m/s, 10m/s)

22. When a tennis ball is allowed to fall freely in air toward the ground. It is found that it acquires a uniform velocity. This is because the __________.

(Weight of the ball does not act beyond a certain speed, Upthrust of the displaced air supports the ball, Frictional force caused by the air increases with speed)

23. The force required to accelerate mass of 1kg at 1.0 m/s2 is __________.

(1N, 10N, 100N)

24. If a stone falls from rest with a uniform acceleration of 10m/s2 (approximately) then __________.

(It falls equal distance in successive seconds, it falls 10.0 m during the first second, its speed increases by 10 m/s each second)

25. The frictionless trolley is moving horizontally at 30m/s. It is then accelerated uniformly in the same direction at 0.5 m/s2 for 30.0 seconds. The final speed is __________.

(15 m/s, 45 m/s, 75 m/s)

26. A person covers half of its journey at a speed of 40 m/s and the other half at 50 m/s. His average speed during the whole journey is __________.

(45 m/s, 46 m/s, 48 m/s, 44.1 m/s)

27. An object is thrown vertically upward with a velocity of 40 m/s and returns after some time into the thrower’s hands with the same velocity. Average velocity during the whole movement is __________.

(40m/s, 60m/s, 80 m/s, 0)

28. A body starts from rest and moves with uniform acceleration of 10m/s2 in the first 10 seconds. During the next 10 seconds it moves with uniform velocity attained. The total distance covered by it is __________.

(200m, 1000m, 1500m, 500)

29. A ball A dropped from the top of a building while another ball B is thrown horizontally at the same time. The ball strikes the ground is __________.

(Ball A, Ball B, Both strikes simultaneously)

30. __________ of the following is one dimensional motion.

(The wheels of a moving train, the earth revolving round the sun, A train running on a straight track)

31. A body has an initial velocity of 8 m/s. After moving 4m its velocity is 12 m/s. The acceleration is __________m/s2.

(10, 100, 4)

32. A body starting from rest travels 120 m in 8th second. Assuring the motion to be uniform, its acceleration is __________m/s2.

(15, 16, 10)

33. A body thrown vertically up with a velocity of 10m/s, comes back in to the hand of the thrower after 4 seconds. Height attained by the body is __________. (Take g = 10m/s2)

(10m, 5m, 15m)

34. The total change in velocity of a body divided by the total time is called __________.

(Average acceleration, Instaneous Acceleration, Uniform Accelration)

35. The change in velocity of a body in a very small interval of time (time interval tends to zero) is called __________.

(Average acceleration, Instantaneous Acceleration, Uniform Acceleration)

36. When there is equal change in velocity in equal intervals of time, then acceleration is called __________.

(Average Acceleration, Instantaneous Acceleration, Uniform Acceleration)

37. Force is that agent which produces or tends to produce the __________.

(Speed in the body, Acceleration in the body, Constant velocity in the body)

38. Whenever a constant force is applied on a body then it will move with __________.

(Cosntant Speed, Constant Velocity, Constant Acceleration)

39. The direction of tension in string will always in the __________.

(Same direction of applied force, Opposite direction of applied force, None of the above)

40. A body of mass 10kg is suspended by a string, the tension produced in the string is __________. (Take g = 10m/s2)

(100N, 9.8 N, 980 N)

41. In elastic collision between the two bodies __________.

(Only mometum of the system is conserved, Only the kinetic Energy of the system is conserved, Both the kinetic Energy and Momentum of the system remain the same)

42. In inelastic collision between the two bodies __________.

(Only mometum of the system is conserved, Only the kinetic Energy of the system is conserved, Both the kinetic Energy and Momentum of the system remain the same)

43. If a lighter body collides elastically with a massive body at rest then the lighter bodies will __________.

(Rebound, Come to rest, Start to move with a velocity double of its initial)

44. The kinetic friction will always be __________.

(Greater than the static friction, Equal to the Static Friction, Less than the static Friction)

45. The unit of coefficient of friction in SI system is __________.

(Newton, Dyne, None of These (No Unit))

46. Due to the rise in temperature the coefficient of fluid friction will __________.

(Decrease, Increase, Remain the same)

47. A body of mass ‘m’ slides down a frictionless inclined plane making an angle q with the horizontal then __________ of the following statement is most appropriate.

(The component of its weight normal to the plane pulls it down the plane, The component of its weight parallel to the plane is balanced by the normal reaction of the plane, The body moves down the plane with a constant acceleration)

48. If a weight of 1 kg and 1gm are dropped from the same height simultaneously then __________.

(1kg will reach the ground earlier, 1gm weight will rach the ground earlier, bother will reach the ground at the same time)

49. If the velocity of the body is uniform then __________.

(Its speed remains uniform, Its speed and direction of motion will remain the same, Its acceleration is uniform)

50. If a particle is moving with constant speed in a circle then its velocity is __________.

(Zero, Uniform, Variable)
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