A particle is moving in a vertical circle.The tensions the string when passing through two positions at angles 30° and 60° from vertical (lowest positions) are T1 and T2 respectively.Then
Sharks due to their special organs, the "ampulae of lorenzini due to which they can detect the potential difference and can locate their prey very precisely of the order of
Two charges are separated by 0.5 m. Now the 0.25 m distance between the two charges is reduced to half of the first distance, how would the electric force become
The value of acceleration due to gravity on the surface of the earth is g.If the diameter of the earth becomes double of its present value and its mass remains unchanged, the value of acceleration due to gravity on the surface of the earth would become
In Millikan s experiment oil drops are used to measure the elementary charge e. Which statement about the behaviour of the oil drops during the experiment is correct
A listener observes the frequency “f” of stationary source. If it move toward with 3
times of velocity of sound. Then the apparent frequency of the sound will be