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Q Define threshold frequency?
The minimum frequency of incident radiation lower which the photoelectric emission isn't possible completely but high the intensity of incident radiation may be. The threshold frequency is dissimilar for different metals.
A point charge q is imbedded at the center of a sphere of linear dielectric material (with susceptibility and radiusR). Find the electric field, the polarization, and the bound cha
Calculate the potential energy of a rock with a mass of 55 kg while sitting on a cliff that is 27 m high.
The stopping potential of a photocell is 2.3 V. What is the initial velocity of an emitted photoelectron that is brought to a stop by the photocell?
Describe how the law of conservation of energy holds good in light interference pattern
Neglecting friction, what is the child''s gravitational potential energy at the top of the swing? What is the child''s kinetic energy at the top of the swing?
(a) Distinguish among metals, insulators and semiconductors on the basis of their energy bands. (b) Why are photodiodes used preferably in reverse bias condition? A photodiode i
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A step-up transformer works on 220V and gives 2A to an external resistor. The turn ratio between the secondary and primary coils is 2 : 25. Assuming 100% efficiency, Determine the
The natural angular frequency of a S.H.O. of mass 2gm is 0.8rad/sec. It undergoes critically damped motion when taken to a viscous medium. Evaluate the damping force on the oscilla
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