MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Blackbody

If the colour...

Question

If the colour of star is changing from red to blue it means

A

the star is going away from the earth

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

the star is coming near the earth

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

the star is stationary

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

none of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B the star is coming near the earth
Since colour of star is changing from red to blue,i.e. wavelength of light emitted by star is decreasing (or frequency is increasing). It means that the star is coming near the earth.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Statement 1: Young stars are blue in colour.
Statement 2: Old stars are red in colour.
Which of the following is correct?

Q. You have learned that the temperature of stars can be guessed from their colour.
Rewrite the following list in the ascending order (lower to higher) of temperature.
(a) Orange star
(b) Blue star
(c) Red star

Q. Why do young stars appear blue and old stars red?

Q. Some stars appear red in colour and some blue in colour. Which one of the statements is true?

Q. The apparent wavelength of light from a star moving away from earth is observed to be

0.01 %

more than its real wavelength. The velocity of star is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Radiation

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon