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A: The obstacle must be in the order of ...

A: The obstacle must be in the order of `10^(-7)m` to see the differation of light.
R: The wavelength of visible light is in the order of `10^(-7)m.`

A

Both assertion and reason are true and the reason is correct explanation of the assertion.

B

Both assertion and reason are true but reason is not correct explanation of the assertion.

C

Assertion is true but the reason is false.

D

Both assertion and reason are false

Text Solution

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The correct Answer is:
A
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KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
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  2. A: It is not possible to have an interference between sound waves prod...

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  3. A: The obstacle must be in the order of 10^(-7)m to see the differatio...

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  4. A: To increase resolving power of a telescope, the diameter of objecti...

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  5. What changes during the polarisation of light?

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  6. If light of intensity lo is incident at an angle 45^(@) with optical a...

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  7. What should be wavelength of light to get 5^(th) bright fringe at a po...

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  8. The polarisation of light proved that light is composed of ......

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  9. The limit of resolution of an optical instrument arises an account of ...

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  10. Ray of light moving in water incidents on glass plate. Reflected light...

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  11. The diameter of telescope lens is 0.61 m, the A wavelength of light is...

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  12. In Young's experiment distance between twe slits is 0.28 mm and distan...

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  13. Which of the following can not be polarised?

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  14. 100pi phase difference = ...... path difference.

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  15. What will be angle of first order maxima obtained by Fraunhoffer diffr...

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  16. The width of fringes ...... as the Young's double slit experiment move...

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  17. What is the angle between the plane of polarisation and the direction ...

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  18. In Young's double slit experiment, the intensity at a point P on the s...

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  19. In a two tourmalines experiment, the polariser and analyser are crosse...

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  20. In a arrangement of Young experiment the central fringe of interferenc...

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