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If a star is moving towards the earth, t...

If a star is moving towards the earth, then the lines are shifted towards

A

red

B

infrared

C

blue

D

green

Text Solution

Verified by Experts

The correct Answer is:
C
When the source and observer approach each other, apparent frequency increases and hence wavelength decreases. This shift is called blue shift.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-WAVE THEORY OF LIGHT -EXERCISE 1
  1. Figure shows behaviour of a wavefront when it passes through a prism. ...

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  2. If a source of light is moving away from a stationary observer, then t...

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  3. If a star is moving towards the earth, then the lines are shifted towa...

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  4. It is believed that the universe is expanding and hence the distant st...

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  5. In case of reflection of a wavefront from a reflecting surface, I...

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  6. If AB is incident wavefront, then refracted wavefront is

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  7. In the context of Doppler effect in light, the term red shift signifie...

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  8. If source and observer are moving towards each other with a velocity v...

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  9. Monochromatic light of wavelength 589nm is incident from air on a wate...

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  10. The critical angle of a certain medium is sin ^(-1)((3)/(5)). The pola...

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  11. When the angle of incidence on a material is 60^(@), the reflected lig...

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  12. Two Nicols are oriented with their principal planes making an angle of...

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  13. Which of the following is a dichroic crysral?

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  14. The graph showing the dependence of intensity of transmitted light on ...

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  15. Sound wave in air cannot be polarised because

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  16. In case of linearly polarised light, the magnitude of the electric fie...

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  17. Which of the following statement(s) is/are correct? I. A polaroid co...

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  18. Polaroids are used in

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  19. Figure shows the process of

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  20. Which of the following statement(s) is/are correct with reference to t...

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