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In a Young's double slit experiment, 12 ...

In a Young's double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength `600nm` is used. If the wavelength of light is changed to `400nm`, number of fringes observed in the same segment of the screen is given by

A

12

B

18

C

24

D

30

Text Solution

Verified by Experts

The correct Answer is:
B
`n_(1)lambda_(1)= n_(2)lambda_(2) implies n_(2)= n_(1) xx (lambda_(1))/(lambda_(2)) = 12 xx (600)/(400)= 18`
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ERRORLESS-WAVE OPTICS AND ELECTROMAGNETIC THEORY-NCERT BASED QUESTIONS (Young’s Double Slit Experiment and Biprism)
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  2. in a two-slit experiment with monochromatic light, fringes are obtaine...

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  3. In a Young's double slit experiment, 12 fringes are observed to be for...

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  5. The two slits are 1 mm apart from each other and illuminated with a li...

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  6. In a Young's double slit experiment, the slits are 2mm apart and are i...

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  8. In YDSE, bichromatic light of wavelengths 400 nm and 560 nm are used...

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  10. In a Young's double slit set-up, light from a laser source falls on a ...

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  11. In young's double slit experiment, if the distance between the slits i...

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  12. The figure shows a double slit experiment with P and Q as the slits. T...

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  13. In a Young's experiment, two coherent sources are placed 0.90mm apart ...

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  14. In Young's double slit experiment, an interference pattern is obtained...

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  15. Two ideal slits S(1) and S(2) are at a distance d apart, and illuninat...

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  16. Two coherent sources separated by distance d are radiating in phase ha...

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  17. In Young's double slit experiment, the phase difference between the li...

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  18. Consider a ray of light incident from air onto a slab of glass (refrac...

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  19. Consider Fraunhoffer diffraction pattern obtained with a single slit i...

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  20. A parallel monochromatic beam of light is incident normally on a narro...

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