Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true
None of these
A,C
B
C,D
A,B & D
Normal type of MCQ with one correct option
If momentum is increased by 20%, then kinetic energy increases by
44%
55%
66%
77%
Normal type of MCQ with one correct option
A particle moves in a straight line with retardation proportional to its displacement. Its loss of kinetic energy for any displacement x is proportional to
x2
ex
x
logex
Normal type of MCQ with one correct option
A uniform chain of mass m and length ( is lying on a frictionless horizontal table with one-third of its length hanging over the edge of the table. The amount of work done to pull the hanging part of the chain up to the table is given by
Normal type of MCQ with one correct option
Two particles of masses m and 4m have linear momenta in the ratio of 2:1. What is the ratio of their kinetic energies?
2
4
16