If the frequency of an emitted x-ray is 1.6 x 10\(^{16}\)Hz, the accelerating potential is?

 [e = 1.6 x 10\(^{-19}\)J, h = 6.63 x 10-\(^{34}\)Js]

If the fraction of the atoms of a radioactive material left after 120 years is 1/64, what is the half-life of the material?

A certain radioactive source emits radiation that was found to be deflected by both magnetic and electric fields. The radiation is?

The inner diameter of a test tube can be measured accurately using a?

Two bodies have masses in the ratio3:1. They experience forces which impart to them, acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced