In a double slit experiment, the two slits are 1 mm apart and the screen is placed 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central maxima of single slit pattern ?

The angle of a prism is 'A'. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence2A on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index \(\large \mu \), of the prism is:

The refractive index of the material of a prism is \(\sqrt{2}\) and the angle of the prism is 30°. One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is

Young’s double slit experiment is first performed in air and then in a medium other than air. It is found that 8\(\large ^{th}\) bright fringe in the medium lies where 5\(\large ^{th}\) dark fringe lies in air. The refractive index of the medium is nearly

A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from,the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is rotated through a small angle \(\large \theta\), the spot of the light is found to move through a distance y on the scale. The angle \(\large \theta\) is given by