﻿ NEET Physics Solved Question Paper 2011 | Previous Year Papers | Zigya

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## NEET Physics Solved Question Paper 2011

#### Multiple Choice Questions

1.

If a body travels half the distance with velocity v1 and the next half with velocity v2,its average velocity will be given by

2.

The ratio of the numerical value of the average velocity and average speed of body is always

• unity

• unity or less

• unity or more

• less than unity

3.

Mark the correct option.
If a ball is projected with velocity v0 at an angle of elevation 30°, then

• gravitational potential energy will, be minimum at the highest point of the trajectory

• kinetic energy will be zero at the highest point of the trajectory

• vertical component of momentum will be conserved

• horizontal component of momentum will be conserved

4.

A spring scale is adjusted to read zero. Particles of mass 1 g fall on the pan of the scale and collide elastically and they rebound upward with the same speed. If the height of fall of particles is 2 m and their rate of collision is 100 particles per second, then the scale reading in grams will be (g =9.8 m/s)?

• 1000 g

• 1100 g

• 1200 g

• 1252 g

5.

A smooth sphere of mass m moving with velocity u directly collides elastically with another sphere of mass M at rest. After collision their final velocities are V and v respectively. The value of v is

6.

A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4. If a force F of 2.5 N is applied on the block as shown in the figure, the frictional force between the block and the floor will be

• 2.5 N

• 5 N

• 7.84 N

• 10 N

7.

The moments of inertia of two freely rotating bodies A and B are IA and IB respectively IA > IB and their angular momenta are equal. If KA and KB are their kinetic energies then

• KA = KB

• KA > KB

• KA < KB

• KA = 2 KB

8.

A wheel of car is revolving at the rate of 1200 cycle/min. On pressing the accelerator, after 10s, it does 4500 cycle/min then radial acceleration of the wheel is

• 1880 degree/s2

• 1980 degree/s2

9.

If the height of a satellite from the earth is negligible in comparison to the radius of the earth R, the orbital velocity of the satellite is

• gR

• $\frac{\mathrm{gR}}{2}$

• $\sqrt{\frac{\mathrm{g}}{\mathrm{R}}}$

• $\sqrt{\mathrm{gR}}$

10.

A satellite is revolving round the earth in an elliptical orbit. Its speed

• will be same at all points of the orbit

• will be maximum when it is at maximum distance from earth

• will be maximum when its distance from the earth will be minimum

• goes on increasing or decreasing continuous depending upon the mass of the satellite