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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.
Classification of conducting materials: Electrical resistivity of a conducting material or conductor ranges from 10 -8 to 10 -3 ohm-m. A good conducting material should have
Q. Illustrate how do fireworks turn into shapes like hearts as well as stars? Answer:- The fireworks creators have worked several decades to figure these things out. There
Define Eddy Currents ? If you try to pull a solid piece of some metals (good electrical conductors) quickly between the poles of a strong magnet, you will feel a force pushing
derivation by calculas method of Snth = (Sn – Sn -1) = u + a/2 (2n – 1)
Q. Briefly explain working of Michelsons Interferometer? Michelson designed an instrument for the measurement of wavelength of sodium light, thickness of thin film and for many
What are the Merits of Semiconductor Diode over Vacuum Diode: (i) Smaller in size (ii) Greater efficiency (iii) Cheaper (iv) Robust
Regard as a pair of two identical capacitors. In which situation is the capacitance of the pair greater? Ans: The effective capacitance of a couple of capacitors in series
As a pendulum is raised to higher altitudes, its period: a) Increases b) Decreases c) Remains the same d) Decreases, and then remains the same Ans: When
A string has a linear density of 7.20 10-3 kg/m and is under a tension of 390 N. The string is 1.9 m long, is fixed at both ends, and is vibrating in the standing wave pattern sho
Essential properties of the medium for wave propagation: (i) Elasticity: So that particle can return to their mean position, after having been disturbed. (ii) Inertia : So t
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