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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.
what is Gravitational field at a distance r from the infinitely long rod with liner mass density d? Please drive it Ans) use Gauss'' law of electrostatics, but replace (1/4πε0)
what is electronic polarization?
As we know photon's spin is one, how lots CPH (that have spin) is able keep the spin of photon? Answer; the photon spin like electron spin comes up of its properties and indepe
Illustrate a labelled diagram of Hertz's experimental set-up to produce electromagnetic waves. Describe the generation of- electromagnetic waves using this set-up.
Find the current flowing in the 5Ω resistor of the circuit shown in Figure using (a) Kirchhoff's laws, (b) the superposition theorem, (c) Thévenin's theorem, (d) Norto
1.5 kg of Oxygen (N 2 ) and 0.15 kg of Helium (He 2 ) are separated by a partition in a vessel. The Nitrogen is at 5 bar and 90 o C and the Helium at 1 bar and 20 o C. The part
An object that is moving in a straight line with speed v covers a distance, d = vt, in time t. Rewrite the equation to find t in terms of d and v. How long does it take a plane tha
This assignment is intended to introduce you to the theory of gas turbine propulsion. The theory of the most simple gas turbine aircraft engine, the ideal turbojet, is detailed in
Which of the following has the same mass as that of an electron: (1) Photon (2) Neutron (3) Positron (4) Proton Ans: Positron
Luminous flux and LASER: The luminous flux of a light source is measured in the units of LUMEN (lm). Lumen (lm) is the amount of light emitted per second by uniform (point) so
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