Physics Class 11 - Chapter 3 - Motion And ForceTest - 5

Physics Class 11 - Chapter 3 -
Motion And Force
Test - 5

1. Throughout the projectile motion?

a) Vertical component remains constant
b) No specified reason
c) Both are constant
d) Horizontal component remains constant

2. In inelastic collision?

a) Both momentum and K.E are conserved
b) Only K.E conserved
c) No specified choice
d) Only linear momentum conserved

3. What is the angle of projection for which the range and maximum height becomes equal?

a) Tan^-14
b) Tan^-11/2
c) Tan^-12
d) Tan^-11/4

4. When angle of projectile is 76 then?

a) Range and height are equal
b) Height and maximum distance are equal
c) range and time are equal
d) Time of flight and height are equal

5. Distance covered by a freely falling body in second will be?

a) 4.9m
b) 39.2m
c) 44.5m
d) 19.6m

6. Speed of gases expels by rocket is over?

a) 400m/s
b) 4000m/s
c) 4000km/s
d) 400km/s

7. Which is not the example of projectile motion?

a) A base ball shot
b) Bullet fired from gun
c) A football kicked
d) A gas filled balloon

8. Application of 3rd law is?

a) Driving a car on the road
b) All of these
c) Throw of ball on a wall
d) Swimming in a water pond

9. Propulsion of rocket is according to?

a) Law of conservation of angular momentum
b) 3rd law of motion
c) Law of conservation of linear momentum
d) Law of conservation of energy

10. For long range and precision we use? a) All of these
b) Ballistic missile
c) Remote control missile
d) Guided missile

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