Optics Answers

Briefly explain how the wavelength of monochromatic light may be found using Young's slits.

A 750nm light beam in air hits the flat surface of a certain liquid, and the beam is split into a reflected ray and a refracted ray. If the reflected ray is completely polarized when it is at 36.0 degrees with respect to the surface, what is the wavelength of the refracted ray?

A beam of 541nm light is incident on a diffraction grating that has 400grooves/mm. Determine the angle of the second-order ray.

Three polarizing plates whose planes are parallel are centered on a common axis. The directions of the transmission axes relative to the common vertical directions. A linearly polarized beam of light with plane of polarization parallel to the vertical reference direction is incident from the left onto the first disk with intensity Ii = 10.0 units. Calculate the transmitted intensity if when s1= 20.0degrees, s2 = 40.0degrees and s3 = 60.0degrees. Hint: Make repeated use of Malus's law

The critical angle for total internal reflection for sapphire surrounded by air is 34.4 degree. Calculate the polarizing angle for sapphire.

Unpolarized light passes through 2 ideal polaroid sheets. The axis of the first is vertical, and the axis of the second is at 30.0 degrees to the vertical. What fraction of the incident light is transmitted?

The angle of incidence of a light beam onto a reflecting surface is continuously variable. The reflected ray in air is completely polarized when the angle of incidence is 48.0degrees . What is the index of refraction of the reflecting material?

What combination of optical phenomena causes the bright coloured patterns sometimes seen on wet streets covered with a layer of oil?

A. Diffraction and polarization

B. Interference and diffraction

C. Polarization and reflection

D. Refraction and diffraction

If plane polarized light is sent through 2 polarizers, the first at 45degrees to the original plane of polarization and the second at 90degrees to the original plane of polarization. What fraction of the original polarized intensity passes through the last polarizer?

Parallel light consisting of 2 monochromatic radiations of wavelengths 6.0 x 10^(-5) cm and 4.0 x 10^(-5) cm falls normally on a plane transmission grating ruled with 5000 lines per cm. What is the angular separation of the second-order spectra of the two wavelengths?