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A radiation of 500nm is incident on a metal surface whose work function is 3ev.why do we not observe the phenomenon of photoelectric effect? Ans) Because the energy of radiation i
Copper constantan is used for measuring temperature up to (A) 1400 o C (B) 800 o C. (C) 1100 o C. (D) 400 o C. Ans: Copper constantan is used for meas
what is holography
With Schematic diagram explain the working of a Michelson interferometer. Obtain the expression for radii of circular interference fringes. How shall you use it to measure waveleng
Write down the Maxwell's electromagnetic equation in differential form in a medium, in the presence of currents and charges. Identify and state the laws of electromagnetism with wh
Define Poisson Distribution in Ideal Gas? Consider a monatomic ideal gas of total Ñ molecules in a volume V ˜ Show that the probability, P N for the number N of mole
what do you understand about phsics
A ski starts from rest and slides down a 20 degree incline 100meters long. (a) if the coefficient of friction is .090, what is the the ski's speed at the base of the incline? (b)if
a body travelling with uniform acceleration crosses two points A &B with velocities 30m/s & 50m/s the speed of the body at mid point of A&B is approximately?
why does our image in the mirror not appear upside down
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