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1. What do you understand by diffraction of waves? Explain why the diffraction of sound is more easily observable than the diffraction of light?
2. The wavelength of two spectral lines are 589 μm and 588 μm. what is the minimum number of lines a grating must have in order to resolve these lines in the first order spectrum?
Two slits in young''s double slit experiment are illuminated by two different sodium lamps emitting light of same wavelength . Do you observe any interference pattern on the screen
An equilateral triangle is inscribed in a circle of radius 2 cm if P lies inside the triangle then the minimum sum of distances of P from the sides of the triangle is? Ans
How does electricity affect the phosphorus cycle?
group velocity and phase velocity
What do you mean by the phase difference between incident and reflected waves at a) an open end and b) closed end? What happens to the fundamental frequency of a stretched strin
For the series-parallel arrangement shown in Figure, find (a) The supply current, (b) The current flowing by each resistor and (c) the p.d. across each resistor
The energy needed to ionize an atom is known as ionization energy. It is the energy needed to make the electron jump from the present orbit to the infinite orbit.
Functions of the commutator: A commutator is a device, which under certain conditions changes ac into dc and vice versa. The commutator is a form of rotating switch placed
Q. State any three laws of photo electric emission? (i) For a specified photo sensitive material there is a minimum frequency called the threshold frequency below which emissio
The device which changes chemical energy into electrical energy is called as electric cell. Battery is a host of constant emf but not constant current.
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