Physics - Study Mode

[#1121] 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.
Correct Answer

(A) 1 : 1

Explanation

Solution: When man throws the stone upward with speed u and downward with speed u, the initial velocity (from the cliff) will be the same. Hence, this will result in equal final velocity. Hence the ratio is 1:1.

[#1122] Scalar Quantities are
Correct Answer

(A) Physical quantities which have magnitude only and no direction

Explanation

Solution: Scalar Quantities are physical quantities which have magnitude only and no direction.

[#1123] Weight of a body is maximum at the:
Correct Answer

(B) Pole

Explanation

Solution: At poles, value of g is maximum. So, there is no effect of rotation of earth.

[#1124] When a body is accelerated, then the velocity will be also
Correct Answer

(A) Increase

Explanation

Solution: If a body is accelerated, then the velocity will also get increased.

[#1125] During ________ motion of an object along a straight line, the velocity remains constant with time.
Correct Answer

(C) Uniform

Explanation

Solution: During uniform motion of an object along a straight line, the velocity remains constant with time.