Home
Class 12
PHYSICS
The spectral line for a given element in...

The spectral line for a given element in the light received from a distant star is shifted towards longer wavelength side by `0.025%`. Calculate the velocity of star in the line of sight.

A

`7.5xx10^(4)ms^(-1)`

B

`-7.5xx10^(4)ms^(-1)`

C

`3.7xx10^(4)ms^(-1)`

D

`-3.7xx10^(4)ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Velocity of star in line of light is
`v=(-triangle lambda)/(lambda)xxc= -(0.025)/(100)xx3xx10^(8)= -7.5xx10^(4)ms^(-1)`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    NCERT FINGERTIPS|Exercise Coherent And Incoherent Addition Of Waves|7 Videos

  • WAVE OPTICS

    NCERT FINGERTIPS|Exercise Interference Of Light Waves And Young'S Experiment|40 Videos

  • WAVE OPTICS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The spectral line for a given element in the light received from a distant star is shifted towards longer wavelength side by 0.032% . Deduce the velocity of star in the line of sight.

The spectral line for a given element in light received from a distant star is shifted towards longer wavelength by 0.024% . Deduce the velocity of star in the line of sight.

The spectral line for a given element , received from a distant star is shifted towards the longer wavelength by 0.028% . What is the velocity of the star ?

What is the speed of star in the line of sight if a spectral line shifts towards longer wavelength side by 0.032% ?

If the wavelength of light emitted by a star is shifted towards red end, then the star is -

The spectral line of wavelength lambda=5000 Å in the light coming from a distant star is observed as 5200 Å.Determine the recession velocity of the star.

When the wavelength of light coming from a distant star is measured it is found shifted towards red. Then the conclusion is

The wavelength of light observed on the earth, from a moving star is found to decrease by 0.05%. Relative to the earth the star is