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Question 1

Doppler shift in frequency does not depend upon

Question 2

A Loudness of sound is related to its

Question 3

A body of mass 5 kg is acted upon by two perpendicular forces 8 N and 6N. The magnitude of the acceleration of the body is

Question 4

A 1.5 kg small ball is dropped into a container filled with lubricant, the velocity of the ball becomes constant after some time. Find the viscous force (in Newton) acting on the ball is (assume the density of ball and lubricant is  respectively.

Question 5

An optical illusion which occurs mainly in deserts during hot summer is based on the principle of
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Feb 4CDS & Defence