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The speed of light in vacuum is 3 xx 10^...

The speed of light in vacuum is `3 xx 10^8 ms^(-1)`

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Using the constants given below: speed of light in vacuum (c) 3.0 xx 10^8 ms^(-1) Planck.s constant (h) =6.6 xx 10^(-4)Js Charge of a proton (e) =1.6 xx 10^(-1)^@C, find the minimum wavelength of the emitted X rays, when an X ray tube is operated at 50 kV.

(a) The refractive index of glass is 1.5 . What is the speed of light in glass ? (Speed of light in vaccum is 3 xx 10^(8) ms^(-1) ). (b) Is the speed of light in glass independent of colour of light ? If not, which of the two colours, red and violet travels slower in a glass prism ?

Refractive index of water is 4/3. calculate the speed of light in water. Speed of light in vacuum is 3xx10^(8)ms^(-1) .

A light ray falling at an angle of 45^@ with the surface of a clean slab of ice of thickness 1.00 m is refracted into it at an angle of 30°. Calculate the time taken by the light rays to cross the slab. Speed of light in vacuum = 3 xx 10^8ms^-1

The angle of minimum deviation for prism of angle pi//3 is pi//6 . Calculate the velocity of light in the material of the prism if the velocity of light in vacuum is 3 xx 10^8 ms^-1 .

The speed of light in vacuum is equal to

The speed of light in air is 3xx10^(8)ms^(-1) . Calculate the speed of light in glass. The refractive index of glass is 1*5 .

A point source surrounded by vacuum emits an electromagnetic wave of frequency of 900 kHz. If the power emitted by the source is 15 W, the amplitude of the electric field of the wave (in x10^(-3) V/m) at a distance 15 km from the source is: find the value x?? "("(1)/(4pi in_(0))=9xx10^(9)(Nm^(2))/(C^(2)) and speed of light in vacuum =3xx10^(8)ms^(-1) )

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is