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Sodium light (lambda= 6xx 10^(-7)m) is u...

Sodium light `(lambda= 6xx 10^(-7)m)` is used to produce interference pattern. The observed fringe width is 0.12 mm. The angle between two interfering wave trains, is

A

`1xx10^(-3)` rad

B

`1xx10^(-2)` rad

C

`5xx10^(-3)` rad

D

`5xx10^(-2)` rad

Text Solution

Verified by Experts

The correct Answer is:
C
The fringe width is given by, `beta=(lamdaD)/d`
The angular width of fringe is given by
`d/D=lamda/beta=(6xx10^(-7))/(0.12xx10^(-3))=5xx10^(-3)"rad"`.
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DISHA PUBLICATION-WAVE OPTICS-EXERCISE-1 : CONCEPT BUILDER
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  2. For observing interference in thin films with a light of wave length l...

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  4. In which of the following is the interference due to the division of w...

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  5. In Young's double slit experiment, one slit is covered with red filter...

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  6. In Young's double slit experiment, a minimum is obtained when the phas...

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  7. Instead of using two slits as in Young's experiment, if we use two sep...

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  8. The maximum intensity of fringes in Young's experiment is I. If one of...

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  9. When we close one slit in the Young's double slit experiment then

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

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

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

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

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

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

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

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

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

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

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

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