## Physics A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground.

Cannot be found from the given information.
0.043055555555556
0.044444444444444
0.042361111111111

## Physics According to special theory of relativity the mass of a particle

Is independent of its velocity.
Decreases with increase in velocity.
Decreases with decrease in velocity.
Increases with increase in velocity with respect to an observer.

Condensation
Evaporation
Distillation
Sublimation

## Physics If density of oxygen is 16 times that of hydrogen, what will be their corresponding ratio of velocity of sound?

0.16736111111111
0.084027777777778
0.052777777777778
0.044444444444444

## Physics Solids have definite shapes.This is because

The forces of adhesion are large
The forces of cohesion of the molecules within are very much less in them
The forces of adhesion are less
The forces of cohesion are very large