The distances of a point on the screen from two coherent sources differ by 93 wavelengths . Is the point bright or dark ? If the path difference is 0.0465 mm , calculate the wavelength of the source of light .

The optical path difference between two identical waves arriving at a point is 371 lambda . Is the point bright or dark ? If the path difference is 0.24 mm . Calculate the wavelength of light used .

The path difference between two identical waves arriving at a point is 85.5lambda .. If the path difference is 42.5 micrometer, the wavelength is

In biprism experiment the distance between the two virtual images of the slit is 0.1 cm and the distance between the slit and biprism is 1 m .If the band width is 0.058 cm , calculate the wavelength of light .

The path difference of two identical waves arriving at a point is 100.5 lambda . The phase difference is 44 micrometer. The wavelength of light is used is

Two sources of sound produce waves differing in wavelength by 12 cm. If the frequencies of the sound are 320 Hz and 360 Hz, calculate the velocity of sound in air.

What is wavefront ? What is the shape of the wavefront at a point far away from the source of light?

In Young's double slit experiment using monochromatic light, the fringe pattern shifts by certain distance on the screen when mica sheet of refractive index 1.6 and thickness 1.964 microns is introduced in the path of one of the interfering waves. The mica sheet is then removed and the distance between the slits and screen is doubled. It is found that the distance between successive maxima now is same as the observed fringe shift upon the introduction of the mica sheet. Calculate the wavelength of the monochromatic light used in the experiment.

In a Young's double-slit experiment,the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be, 1.2 cm. Determine the wavelength of light used in the experiment.