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NEET Physics Solved Question Paper 2003

Multiple Choice Questions

The velocity with which a projectile must be fired so that it escapes earth's gravitation does not depend on

mass of the earth
mass of the projectile
radius of the projectile's orbit
gravitational constant

2.
The motion of planets in the solar system is an example of the conservation of

mass

linear momentum

angular momentum

energy

angular momentum

There is no external torque about the sun since the force of the sun and position vector are always at an angle 180^°

since $τ = r \times F$

So angular momentum is conserved.

A body starting from rest moves along a straight line with a constant acceleration. The variation of speed (v) with distance ( s ) is represented by the graph

A lead shot of 1 mm diameter falls through a long column of glycerine. The variation of its velocity 'v' with distance covered is represented by

Assertion: The earth is slowing down and as a result the moon is coming nearer to it.

Reason: The angular momentum of the earth moon system is not conserved.

if both assertion and reason are true and the reason is the correct explanation of the assertion
if both assertion and reason are true and the reason is not the correct explanation of the assertion
if assertion is true but reason is false
if both assertion and reason are false statements

Assertion: The Coulomb force is dominating force in the universe.

Reason: The Coulomb force is weaker than the gravitational force.

if both assertion and reason are true and the reason is the correct explanation of the assertion
if both assertion and reason are true and the reason is not the correct explanation of the assertion
if assertion is true but reason is false
if both assertion and reason are false statements

Assertion: The length of the day is slowly increasing.

Reason: The dominant effect causing a slowdown in the rotation of the earth is the gravitational pull of other planets in the solar system.

if both assertion and reason are true and the reason is the correct explanation of assertion
if both assertion and reason are true and the reason is not the correct explanation of the assertion
if assertion is true but reason is false
if both assertion and reason are false statements

A ball is thrown vertically upwards. Which of the following plots represents the speed-time graph of the ball during its flight if the air resistance is not ignored?

An earthquake generates both transverse (S) and longitudinal (P) sound waves in the earth. The speed of S waves is about 4.5 km/s and that of P waves is about 8.0 km/s. A seismograph records P and S waves from an earthquake. The first P wave arrives 4.0 min before the first S wave. The epicentre of the earthquake is located at a distance about