A quartz plate is a half wve plate for light whose wave length. Is `lambda`. Assuming that the variations is the indices of refraction with wavelength can be neglected, how would this behave with repsect to light of wavelengt `lamda=2lamda`.

Light passes through a system of two crossed Nicol prisms between which a quartz plate cut at right angles to its optical axis is placed. Determine the minimum thickness of the plate which allows light of wavelength 436 nm to be complately cut off by the system and transmits half the light of wavelength 497 nm . The specific rotation constant of quartz for these wavelength is equal to 41.5 and 31.1 angualr degress per mm respectively.

(i) Find the speed of light of wavelength lambda =780 nm (in air) in a medium of of refractive index µ=1.55. (ii) What is the wave length of this light in the given medium?

(i) Find the speed of light of wavelength lambda =780 nm (in air) in a medium of of refractive index µ=1.55. (ii) What is the wave length of this light in the given medium?

Light of wavelength 4700Å is incident on a metal plate whose work function is 2 eV. Then maximum kinetic energy of the emitted photoelectron would be

A quartz plate cut parallel to its optical axis is placed between two corssed Nicol prisms so that principle directions form an angle of 45^(@) with the optical axis of the plate. What is the minimum thickness of that plate transmitting light of wavelength lambda = 643nm with maximum intensity while greatly reducing the intensity of transmitting light of wavelength lambda_(2) = 564 nm ? The difference of refractive indieces indices for extroardianry and ordinary rays is assumed to be equal to n_(e) - n_(0) = 0.0090 for both wavelengths.

The angles of incidence and refraction of a monochromatic ray of light of wavelength lamda at an air-glass interface are i and r, respectively. A parallel beam of light with a small spread delta lamda in wavelength about a mean wavelength lamda is refracted at the same air-glass interface. The refractive index mu of glass depends on the wavelength lamda as mu(lamda) = a + b//lamda2 where a and b are constants. Then the angular spread in the angle of refraction of the beam is