An astronaut is approaching the moon. He sends a ratio signal of frequency `5 xx 10^(9) Hz` and find that the frequency shift in echo received is `10^(3) Hz`. Find his speed of approach.

An astronaut is approacing the moon. He sends a radio wave of frequency 5 xx 10^(9) Hz towards the moon. The frequency of the radio echo received by him has a frequency 9 xx 10^(4) Hz more than that of real frequency. The relative velocity of the rocket with respect to the moon is

An astronaut approaching the moon sends a ratio signal of frequency 5 xx 10^(3) MHz towards moon to find the speed of his rocket. The frequency of waves reflected back from the moon is 86 kHz more than the original frequency. Calculate the velocity of the rocket relative to the moon.

The energy of a photon of frequency 4 xx 10^(15) Hz is ?

The effective mass of photon of frequency 5xx10^(14) Hz is

What is the momentum of a photon having frequency 1.5 xx 10^(13) Hz ?

The momentum of photon of frequency 10^9 Hz will be

Find the wavelength of electromagnetic waves of frequency 3xx10^(12) Hz in free space

Give the ratio of velocities of light rays of frequencies 5 xx 10^(12) Hz and 25 xx 10^(12)Hz

The momentum of photon of frequency 10^9 Hz will be -