Alpha particle is a helium nucleus which is positive charged . Beta particle is an electron which is negative charged . Gamma ray has...

Half-life of a radioactive nuclide is the time taken for half the nuclei of that nuclide in any sample to decay . (time taken for the...

For these type of questions, it is important to identify which tyre/wheel is connected/powered by the engine or the person. On each tyre...

Answer: Option A Since the air bubble is enclosed, PV at A is equal to PV at B.                   PAVA = PBVB (Patm + Pwater) VA =...

Answer: Option D Key concept here is Newton’s 3rd Law. Action equals reaction. Both trolleys are connected by the spring, hence the...