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Q. Define: optic axis of a crystal.
In a double refracting crystal there is a particular direction in which both the rays travel with same velocity. This direction is called as optic axis.
The refractive index is similar for both rays and there is no double refraction along this direction.
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
Starting from Maxwell's e-m equation, get the wave equation for E in an ionized medium. Identify the dissipative terms in the equation.
give a example
Can you explain modulation? Why is it required? What is "World Wide Web" (WWW)? Give the frequency range of speech signals.
Refraction law: For a wavefront travelling by a boundary among two media, the first along a refractive index of n 1 , and the other with one of n, the angle of incidence thet
Two elements A and B form compounds having molecular formulae AB 2 and AB 4 . dissolved in 2O g of benzene, 1 g of AB2 lower the freezing point by 2.3 K, whereas 1 g of AB4 lowers
which circular path in any time in any mation
If either screen or source or both are at preset distance from the diffracting device (obstacle or aperture), the diffraction is known as Fresnel type.
Describe Gauss' law and its importance. Use it to search out the electric field due to a linear and infinite sheet charge distribution and also describe why Gauss' law cant be used
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
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