A photon falls through a height of 1 km ...

A photon falls through a height of 1 km through the earth's gravitational field. To calculate the change in its frequency, take its mass to be `hv//c^2`. The fractional change in frequency v is close to

`10^-20`

`10^-17`

`10^-13`

`10^-10`

Text Solution

AI Generated Solution

Topper's Solved these Questions

SOLVED PAPER 2018
KVPY PREVIOUS YEAR|Exercise EXAMPLE|24 Videos

Similar Questions

Explore conceptually related problems

A body of mass 1 kg is lifted through a height of 1m, then its work done is

Calculate the change in magnetic dipole moment when the electron in a H- atom makes a transition from the n=4 orbit to the n=3 orbit. Suppose that the atoms is in a magnetic field of induction. Calculate the change in energy when it makes the same transition and the corresponding change in frequency of the emitted photon due to the magnetic field.

Although a photon has no rest mass, but it possesses the inertial mass m="hf"/c^2 where h is Planck's constant , f is frequency of light and c is speed of light . Since light is deflected by a gravitational field , so it is naturally assured that photons have same gravitational behaviour as other particles. When photon is emitted from source of star of mass M and radius R, total energy of photon will be sum of hf and gravitational potential energy. At a large distance from star, the photon is beyond the star's gravitational field , so its gravitational potential energy becomes zero but its total energy remains constant. So frequency of a photon emitted from surface of a star decreases as it moves away from star. A photon in visible region of spectrum is thus shifted towards red end, and this phenomena is known as gravitational red shift. If a photon of original frequency f falls through a small height H near the earth's surface, then fractional charge in frequency will be (acceleration due to gravity is g)

When the length of the vibrating segment of a sonometer wire is increased by 1% the percentage change in its frequency is

A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is (g = 10m//s^(2))

A heavenly body is receding from earth such that the fractional change in lambda is 1, then its velocity is

A radiation of frequency v_0 falls at an incident angle of 30^@ on a perfectly reflecting surface. Calculate the change in the momentum .

An open organ pipe of length 1 and fundamental frequency n is gradually dipped into water with uniform speed 'v'. The rate of change in its fundamental frequency is

How much time would a satellite in an orbit at a height of 35780 km above the earth's surface take to complete one revolution around the earth , if the mass of the earth were four times its original mass ?

KVPY PREVIOUS YEAR-SOLVED PAPER 2019-EXAMPLE

A particle of mass 2/3 kg with velocity v=-15m/s at t=-2 s is acted up...
Text Solution
|
As shown in the schematic below, a rod of uniform cross-sectional area...
Text Solution
|
A photon falls through a height of 1 km through the earth's gravitatio...
Text Solution
|
0.02 moles of an ideal diatomic gas with initial temperature 20^@C is ...
Text Solution
|
A heater supplying constant power P watts is switched on at time t=0 m...
Text Solution
|
Unpolarized red light is incident on the surface of a lake at incident...
Text Solution
|
A neutral spherical copper particle has a radius of 10 nm (1 nm=10^-9m...
Text Solution
|
A charge +q is distributed over a thin ring of radius r with line char...
Text Solution
|
Originally the radioactive beta decay was thought as a decay of a nucl...
Text Solution
|
One gram-mole of an ideal gas A with the ratio of constant pressure an...
Text Solution
|
How will the voltage (V) between the two plates of a parallel plate ca...
Text Solution
|
Three large identical plates are kept close and parallel to each other...
Text Solution
|
A metal rod of cross-sectional area 10^(-4)m^2 is hanging in a chamber...
Text Solution
|
A short solenoid (length l and radius r, with n turns per unit length)...
Text Solution
|
Consider the wall of a dam to be straight with height H and length L. ...
Text Solution
|
Two containers C1 and C2 of volumes V and 4V respevtively hold the sam...
Text Solution
|
Four electrons, each of mass me are in a one dimensional box of size L...
Text Solution
|
A rope of length L and uniform linear density is hanging from the ceil...
Text Solution
|
A circuit consisits of a coil with inductance L and an uncharged capac...
Text Solution
|
The circuit below is used to heat water kept in a bucket. Assuming ...
Text Solution
|