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It is believed that the universe is expa...

It is believed that the universe is expanding and hence the distant stars are receding from us. Light from such a star will show

A

Shift in frequency towards longer wavelength

B

Shift in frequency towards shorter wavelength

C

No shift in frequency but a decrease in intensity

D

A shift in frequency sometimes towards longer and sometimes towards shorter wavelength

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The correct Answer is:
A
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AAKASH INSTITUTE-WAVE OPTICS-Assignment (Section-A (objective type question(one option is correct)))
  1. If a torch is used in place of monochromatic light in Young's experime...

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  2. In Young's double slit experiment, when two light waves form third min...

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

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  4. The 6563 Å H(2) line emitted by hydrogen in a star is found to be red ...

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

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  6. A slit of width is illuminated by white light. For red light (lambda=6...

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  7. The bending of light about corners of an obstacle is called

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  8. Angular width (beta) of central maximum of a diffraction pattern on a ...

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  9. Red light is generally used to observe diffraction pattern from single...

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  10. When a compact disc is illuminated by a source of white light, coloure...

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  11. For what distance is ray optics a good approximation when the aperture...

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  12. To observe diffraction, the size of the obstacle

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  13. In a single slit diffraction pattern

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  14. Diffraction and interference of light refers to -

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  15. The limit of resolution of an optical instrument arises on account of

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  16. A polariser in used to

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  17. Light waves can be polarised as they are

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  18. Through which character we can distiguish the light waves from sound w...

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  19. The angle of polarisation for any medium is 60^(@) , what will be crit...

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  20. Which of the following cannot be polarised?

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