Vibrations and waves questions | form five Physics

A beam of monochromic light of wavelength 680nm in air passes into glass.

Calculate:

1. The speed of light in glass
2. The frequency of light
3. The wavelength of light in glass

Answer / Solution

UNSOLVED

Light of wavelength 644nm is incident on a grating with a spacing of 2.00x10^-6m.

1. What is the angle to the normal of a second order maximum?
2. What is the largest number of orders that can be visible?
3. Find the angular separation between the third and fourth order image.?

Answer / Solution

UNSOLVED

In a Yoing`s double – slit experiment a total of 23 bright fringes occupying a total distance of 3.9mm were visible in travelling microscope, which was focused on a plane being at a distance of 31cm from the double slit. If the wavelength of light being used was 5.5x10^-7m; determine the separation of the double slit.

Answer / Solution

UNSOLVED

When a grating with 300 lines per millimeters is illuminated normally with parallel beam of monochromatic light a second order principal maximum is observed at 18.9^o to the straight through direction. Find the wavelength of the light.

Answer / Solution

UNSOLVED

A white light fall on a slit of width `a`; for what value of `a` will be the first minimum of light falling at the angle of 30^o when the wavelength of light is 6500nm?

Answer / Solution

UNSOLVED