Question : If a body moves with a constant speed in a circle:

Option 1: no work is done on it

Option 2: no force acts on it

Option 3: no acceleration is produced

Option 4: its velocity remains constant

Question : A man travels 400 km partly by train and partly by steamer. He spends 9 hours more time on the steamer. If the velocity of the steamer is 30 km/hr and the velocity of the train is 70 km/hr, how much distance does he cover by steamer?

Option 1: 309 km

Option 2: 371 km

Option 3: 464 km

Option 4: 556 km

Question : A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that:

Option 1: The rubber ball suffers a greater change in momentum

Option 2: The metal ball suffers a greater change in momentum

Option 3: Both suffer the same change in momentum

Option 4: The initial momentum of the rubber ball is greater than that of the metal ball

Question : During ______ motion of an object along a straight line, the change in velocity of the object for any time interval is zero.

Option 1: Linear

Option 2: Translational

Option 3: Equilibrium

Option 4: Uniform

Question : Two points P and Q are 3 cm apart. These two points lie on the circumference of a circle having a radius of 1.7 cm. What is the distance (in cm ) of the line segment PQ from the centre of the circle?

Option 1: 0.8

Option 2: 1.0

Option 3: 0.4

Option 4: 0.6