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In a single slit Fraunhofer diffraction ...

In a single slit Fraunhofer diffraction experiment, the wavelength of the light used is 400 mm and the first minimum is obtained for diffraction angle `30^(@)`. The magnitude of `theta` for first secondary maximum is

A

`sin^(-1) ((2)/(3))`

B

`sin^(-1)((3)/(4))`

C

`sin^(-1)((1)/(4))`

D

`tan^(-1)((2)/(3))`

Text Solution

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The correct Answer is:
B
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CHHAYA PUBLICATION-DIFFRACTION AND POLARISATION OF LIGHT-EXERCISE (MULTIPLE CHOICE QUESTIONS)
  1. A beam of light of wavelength 900 nm from a distant source falls on a ...

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  2. The width of diffraction band is

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  3. In a single slit Fraunhofer diffraction experiment, the wavelength of ...

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  4. In a single slit experiment, a beam of parallel monochromatic light fa...

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  5. In a single slit experiment, the width of the slit is reduced. The lin...

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  6. In a single slit experiment, the width of the slit is reduced to half....

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  7. A narrow slit of 2 mm width is illuminated by a monochromatic light of...

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  8. Resolving power of a microscope is

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  9. For minimum angular distance between two stars, which a telescope can ...

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  10. An unpolarised light of intensity I(0) falls on a pair of Nicol prism....

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  11. A polaroid is inclined at an angle 45^(@) with the incident light of i...

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  12. Amplitude of unpolarised light on a polariser is a. Amplitude of polar...

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  13. When a light ray in air is incident on glass at 57^(@), the reflected ...

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  14. The Brewster's law in polarisation of light is

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  15. From Brewster's law it follows that the polarising angle depends on

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  16. The tangent of the polarising angle is equal to the refractve indices ...

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  17. A ray of light is incident on a glass. The reflected ray gets totally ...

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  18. Angle of polarisation for a medium is 60^(@). Critical angle for this ...

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  19. An unpolarised ray of light is incident on water surface. The incident...

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  20. Critical angle of a medium is sin^(-1)(0.6). The polarising angle for...

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