YSA Model Paper 

Paper:   Physics                                                 Marks: 65

Class:   9^th                                                                    Time:                2:30

Section – C

Marks-21

Note:  Attempt any three questions.

Q.3       a)         Differentiate between the random error and systematic error, how they are minimized?

            b)         A dolphin jumps from surface of water and comes back after reaching a height of 1.8m. Find the initial speed of

 dolphin.

Q.4       a)         Find the equation for tension and acceleration when one body moves  vertically and      

 other horizontally connected with two ends of a rope passing over a frictionless pulley.

            b)         A person returns to home after jogging in three different directions. If he  moved initially

 800m towards North, 1300m towards west, then how much distance he had covered in the third direction?

Q.5       a)         A painter weighing 700N is standing on a plate form hung by two vertical ropes. The weight

 of plate form is 200N, if the painter is standing one meter away from one end and length of plate form is 3m.

 Then find the  tension in each rope.

            b)         Derive the equation for orbital speed of a satellite revolving around the earth at height h.

Q.6       a)         Differentiate between conduction and convection. (4)

            b)         What is Pascal’s law? Write its practical application. (5)

 

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Biology	Section A  Section B  Section C	Biology	Section A  Section B  Section C	Biology	Section A  Section B  Section C	Biology	Section A  Section B  Section C
Physics	Section A  Section B  Section C	Physics	Section A  Section B  Section C	Physics	Section A  Section B  Section C	Physics	Section A  Section B  Section C
Computer	Section A  Section B  Section C	Computer	Section A  Section B  Section C	Computer	Section A  Section B  Section C	Computer	Section A  Section B  Section C
Math	Section A  Section B  Section C	Math	Section A  Section B  Section C	Math	Section A  Section B  Section C	Math	Section A  Section B  Section C
				Pak  Studies	Section A  Section B  Section C