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Q. Why the centre of Newton's rings pattern appears dark?
The thickness of the air film becomes zero at the point of contact of lens L with glass plate P. Therefore there is no path difference between the interfering waves. So it must appear bright. However the wave reflected from the denser glass plate has suffered a phase change of π while the wave reflected at the spherical surface of the lens has not suffered any phase change. Therefore the point O appears dark.
a) Explain ampere's law and calculate magnetic field at any point P beacuse of (i) Infinite long wire (ii) Inside a solenoid (iii) Inside a toroid b) Explain Biot S
I''m looking for help with a particular project regarding calculating specific refractive index calculations / measurements using a mirror. This help will involve practical assista
is the potential in the cavity of a charged conductor zero
A woman wearing high heels briefly supports all her weight on the heels. If her mass is 45 kg and each heel has an area of 1.2 cm 2 , what pressure does she exert on the floor
Nuclear Reactor: During fission large amount of energy is free in the form of heat. A system, which is used to get controlled amount of heat energy from nuclear fission is know
When unsaturated compounds undergo addition reactions with free radicals, it is known as free radical addition reaction.
Define drift velocity and derive an expression for it?
For silicon the forbidden gap is (A) 1.1ev. (B) 0.25ev. (C) 0.5ev. (D) 0.7ev. Ans: For silicon the forbidden gap is 1.1ev.
what is the difference between nuclear fusion and nuclear fission?
RESISTANCE: An electric current is a flow of free electrons through a conductor. The size of current flowing through a conductor for a given applied voltage depends on: • T
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