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Distance between screen and source is de...

Distance between screen and source is decreased by 25%. Then the percentage change in fringe width is

A

0.2

B

0.31

C

0.75

D

0.25

Text Solution

Verified by Experts

The correct Answer is:
D
`xpropD`
`therefore` If d becomes thrice, then X becomes `1/3` times.
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DISHA PUBLICATION-WAVE OPTICS-EXERCISE-1 : CONCEPT BUILDER
  1. When we close one slit in the Young's double slit experiment then

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  2. S is the size of the slit, d is the separation between the slits and D...

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  3. Distance between screen and source is decreased by 25%. Then the perce...

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  4. In a Young’s double slit experiment, the separation of the two slits i...

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  5. In YDSE, how many maximas can be obtained on a screen including centra...

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  6. The Young's double slit experiment is performed with blue and with gre...

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  7. In Young's double slit experiment, the slits are 3 mm apart. The wavel...

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  8. In Young's experiment intensity at a point on the scrren is 75% of the...

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  9. In Young's double slit experiment, lamda=500nm, d = 1mm, D = 1m. Minim...

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  10. The figure shows the interfernece pattern obtained in double slit expe...

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  11. In YSDE, both slits are covered by transparent slab. Upper slit is cov...

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

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  13. A YDSE is conducted in water (mu(1)) as shown in figure. A glass plate...

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

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  15. In Young's double slit experiment intensity at a point is ((1)/(4)) of...

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  16. In a Young's double-slit experiment the fringe width is 0.2mm. If the ...

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  17. In Young's double slit experiment, distance between two sources is 0.1...

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  18. A single slit diffraction pattern is obtained using a beam of red ligh...

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  19. From Brewster's law of polarisation, it follows that the angle of pola...

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  20. The first diffraction minima due to a single slit diffraction is at th...

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