The wavelenth of light is 5000 Å . Find the wave number.

If the wavelength of light is 4000 Å , then the number of waves in 1 mm length will be

If the wavelength of light is 4000 Å , then the number of waves in 1 mm length will be

A light wave in air enters a medium of refractive index (4)/(3) . If the wavelength of light in air is 6000Å , then the wave number of light in the medium is

A light wave in air enters a medium of refractive index (4)/(3) . If the wavelength of light in air is 6000Å , then the wave number of light in the medium is

If the wave length of light is 2000Å , then the number of waves in I mm. length will be________.

In a biprism experiment, the optical path difference between the two identical waves arriving at a point is 0.05 cm. if the wavelength of light used of 5000 Å, then the number of dark friges passing through that point will be

The optical path difference between the two identical waves arriving at a point is 0.05 cm. If wavelength of light uses is 5000Å , then the number of dark fringes passing through that point will be

The wavelength of light is 5000 Å , express it in nm .

The wavelength of light is 5000 Å , express it in m .