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Two light sources are said to be coheren...

Two light sources are said to be coherent if they emit

A

waves of same freqency

B

waves of same velocity

C

waves of same wavelength and same phase

D

waves of same wavelength having a constant phase difference

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The correct Answer is:
D
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BINA LIBRARY-OPTICS -II-EXERCISE
  1. Write two difference between real and virtual image ?

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  2. What is a beam of light?

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  3. Two waves of same frequency , but of amplitudes in the ratio 1 : 3 are...

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  4. In Young's experiment, the ratio of maximum to minimum intensities of ...

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  5. In Young's double slit experiment on interference the ratio of intensi...

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  6. Two slits, 4 mm apart, are illuminated by light of wavelength 6000Å . ...

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  7. In Young's double slit experiment, intensity on screen at a point wher...

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  8. In a Young's double slit experiment, using sodium light ( lamda = 589...

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  9. When light is incident at polarising angle, which of the following is ...

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  10. What changes occurs on polarisation of light?

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  11. Which of the following undergo maximum diffraction?

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  12. Light waves are

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  13. Light waves are transverse in nature. This is indicated by

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  14. In Young's double slit experiment, the separation between the slits is...

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  15. The fringes seen in Young's double slit experiment are an evidance of

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  16. How is the interference pattern in Young's double slit experiment affe...

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  17. Two light sources are said to be coherent if they emit

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  18. Which one of the following phenomena can not be explained by wave theo...

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  19. Polarisation of light shows that light waves are

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  20. Polarised glass is used in sunglass, because

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