Dual nature of light and related questions

How light has a dual nature? A photon has zero rest mass. Explain how ? (These questions were posted by Shubham SInha  and Ritika Chatak) Answer: The dual nature of light has been established through the various theories in an attempt to find out the real nature of light. The first theory on the nature of … Continue reading Dual nature of light and related questions

Explain IMPULSE in simple terms

Vimal asked this question. Impulse is the effect of a force and is measured as the change in momentum produced. The same effect, that is the same change in momentum can be produced by a large force acting for a short interval of time, a small force acting for a large interval of time or a moderate [...]

A large field is possible by inserting a soft iron core inside the solenoid. Explain why?

PukNitish asks: A large field is possible by inserting a soft iron core inside the solenoid. Explain why? Ans: Soft Iron has high magnetic permeability, so all the magnetic field lines prefer to pass through it. Thus the magnetic field inside the solenoid is intensified.