set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

A nanometre is equal to

a) $10^{-8}$ cm

b) $10^{-6}$ cm

c) $10^{-7}$ cm

d) $10^{-9}$ cm

Question : 2

If an object undergoes a uniform circular motion, then its

a) speed changes

b) acceleration remains uniform

c) velocity changes

d) velocity remains uniform

Question : 3

A body is projected vertically upwards with a velocity of 96 ft/s. What is the total time for which the body will remain in the air?

a) 9s

b) 3s

c) 6s

d) 12s

Question : 4

Ampere is the unit of

a) Resistance

b) Voltage

c) Electric current

d) Power