TRUE/FALSE TYPE QUESTIONS Rubber is more elastic than steel.

TRUE/FALSE TYPE QUESTIONS No material is perfect elastic.

Water is more elastic than air, why ?

TRUE/FALSE TYPE QUESTIONS Modulus of elasticity of most of the materials decreases with the increase of temperature.

TRUE/FALSE TYPE QUESTIONS: A body in linear motion can be in equilibrium

TRUE/FALSE TYPE QUESTIONS: Frictional force gets increased when a surface is polished beyond a certain limit.

TRUE/FALSE TYPE QUESTIONS: A soda-water bottle isfalling freely. The bubbles of the gas will rise in the water of the bottle.

TRUE/FALSE TYPE QUESTIONS: If the net force acting on a body is zero, the body will remain necessarily at rest position.

TRUE/FALSE TYPE QUESTIONS: When an automobile going fast around a curve overturns, its outer wheels leave the ground.

TRUE/FALSE TYPE QUESTIONS: A large size brake on a bicycle is more effective than a smaller one.

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c ) If assertion is true but reason is false. (d) If assertion and reason are false. Q. Assertion: Stress is the internal force per unit area of a body. Reason: Rubber is more elastic than steel: