Speed of light in vacuum is

The threshold wavelength for silver is 3800overset@ A . Calculate maximum kinetic energy in eV of photoelectrons emitted when ultraviolet light of wavelength 2600overset@ A falls on it. Also calculate stopping potential ( 1 eV = 1.6 xx 10^-19 J , Planck's constant = h = 6.63 xx 10^-34 Js , speed of light in vacuum = 3 xx 10^8 m//s ).

Light travels through a glass plate of thickness t and refractive index mu. If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass is

Plank 's constant (h) speed of light in vacuum (C) and newton 's gravitational constant (G) are three fundamental constant .Which of the following combinations of these has the dimension of length?

Find the order of magnitude of the following quantities: Speed of light in vaccum =299792458 m//s

Calculate the de Broglie wavelength of an electron moving with (1/3)rd of the speed of light in vacuum.(Neglect relativistic effect) (Planck's constant : h = 6.63 xx 10^-34 js , Mass of electron : m = 9.11 xx 10^-28 g )

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

The absolute refractive index of water is 1.36. What is the velocity of light in water? (velocity of light in vacuum is 3×10^8m//s )

Assertion: Speed of light in glass is indep[endent of the colour of light. Reason : the violet colour travels faster than the red light in a glass prism.

Speed of light in air is always less than that in glass. True/False