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A beam of light of wavelength 900 nm fro...

A beam of light of wavelength 900 nm from a distant source falls on a single slit 0.5 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance of first minimum on either side of central maximum is

A

2.4 mm

B

4.8 mm

C

9.6 mm

D

none of the these

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The correct Answer is:
D
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CHHAYA PUBLICATION-DIFFRACTION AND POLARISATION OF LIGHT-EXERCISE (MULTIPLE CHOICE QUESTIONS)
  1. In a single slit (width = a) diffraction of light of wavelength lambda...

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  2. In a single slit experiment, angular width of the first minimum obtain...

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  3. A beam of light of wavelength 900 nm from a distant source falls on a ...

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  4. The width of diffraction band is

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

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

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

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

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

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  10. Resolving power of a microscope is

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

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

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

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

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

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

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

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

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

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

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