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In a Fresnel biprism experiment, the two...

In a Fresnel biprism experiment, the two positions of lens give separation between the slits as 16 cm and 9 cm respectively. What is the actual distance of separation ?

A

`12.5 cm`

B

12 cm

C

13 cm

D

14 cm

Text Solution

Verified by Experts

The correct Answer is:
B
Actual distance of separation,
`sqrt(1_(1)r_(2))= sqrt(16xx9)=12`
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KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
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  11. In the Young's double slit experiment, the intensity of light at a poi...

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  12. If the focal length of objective lens is increased then magnifying pow...

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  13. For a parallel beam of monochromatic light wavelength lambda diffracti...

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  14. In a double slit experiments, the two slits are 1 mm apart and the scr...

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  15. At the first minimum adjacent to the central maximum of a single slit ...

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  16. If the two slits in Young's double slit experiment have width ratio 1:...

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  17. The intensity at the maximum in a Young's double slit experiment is I(...

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