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Explain the term 'work function' of a metal. The threshold frequency of a metal is f0. When the light of frequency 2f0 is incident on the metal plate, the maximum velocity of electrons emitted is v1. When the frequency of the incident radiation is enhanced to 5f0, the maximum velocity of electrons emitted is v2. Find the ratio of v1 to v2.
Water flows from a large tank through a large pipe that splits into two smaller pipes as shown in Figure. If viscous effects are negligible (no head loss), determine the volume flo
A 400kVA transformer has a primary winding resistance of 0.5Ω and a secondary winding resistance of 0.001Ω . The iron loss is 2.5kW and the primary and secondary voltages are
Define the Cylinders and Heat Bath? Regard as a cylinder 1 m long with a thin, massless piston clamped in such a manner that it divides the cylinder into two equal parts. The
Specific heat of a gas is numerically equivalent to the amount of heat essential to raise the temperature of unit mass of gas by 1 0 C. In order to raise the temperature of unit ma
Inertia and the Right Hand Turn Suppose in which you are a passenger within a car that is forming a right-hand turn. As the car starts to take the turn to the right, you freque
Differentiate between teporary and permanent magnet
What are the design constraints of slide emitting optics? The genuine illuminance of side emitting optics is low, while the luminance is quite acceptable in many cases. This m
working model
Q. Define: Peltier coefficient and write its unit. The quantity of heat energy absorbed or evolved at one of the junctions of a thermocouple when one ampere current flows for
Why is there far more matter than antimatter in the observable universe? Ans) It may have to do with the way the universe was created. Certainly if there was a lot of antimatter c
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