The speed of light is `3 xx 10^8m//sec`. Calculate the frequency of red light of wavelength of `6.5 xx 10^-7` m.

If the speed of light is 3.0 xx10^8 ms^-1 , calculate the distance covered by light to 2.00 ns.

The speed of light in a medium is 2.25 xx 10^(8) m//s . Calculate absolute refractive index of the medium.

The fringe separation in a biprism is 3.2 xx 10^-4 m when red light of wavelength 6.4 xx 10^-7 m is used, by how much will this change, if blue light of wavelength 4 xx 10^-7 m is used with the same setting.

Solve the following examples/ numerical problems:(c=3xx10^8 m/s) The speed of light in a transparent medium is 2.4 xx10^8 m/s. Calculate the absolute refractive index of the medium.

In a biprism experiment the distance between the slit and the screen is 1 m and the separation of the two virtual images of the slit is 0.4 mm. An interference pattern is obtained with light of wavelength 5.5 xx 10^-7 m . Find the distance between the 3rd and the 8th bright band.

The resolving power of a telescope of aperture 100 cm for light of wavelength 5.5 xx 10^-7 m is

The velocity of light in vacuum is 3 xx 10^8 m//s . Therefore the velocity of light in m/s in a medium of R.I. 1.25 is

If the wavelength of a certain wave of light is 2.0 xx 10^3 cm. What is the frequency of this wave?

Calculate the wavelength, frequency and wave number of a light wave whoce periods is 2.0 xx 10^-10 s .