Physics Test-32...

By what factor is the electric force between two electrons greater than the gravitational force between them? (The distance between them is equal in both the cases)

Which of the following is not used for electroplating metal articles?

The ratio of mass defect and nucleon is called as

Maxwell's displacement current is a response to:

Which of the following method is used to measure the mass of planets?

The instrument for the accurate measurement of the e.m.f of a cell is:

A particle starts S.H.M. from the mean position. Its amplitude is \(A\) and time period is \(T\). At the time when its speed is half of the maximum speed, its displacement \(y\) is:

Black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass= \(5.98 \times 10^{24}\) kg) have to be compressed to be a black hole?

A current of \(2~ A\) flows in conductors as shown. The potential difference \(V_A-V_B\) will be:

A passenger in a moving train tosses a five rupee coin. If the coin falls behind him, then the train must be moving with a uniform _______.