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The maximum intensity obtained due to th...

The maximum intensity obtained due to the superposition of waves of 'n' coherent source having same intensity `I_(0)` is ......

A

nI

B

`(I)/(n)`

C

`n^(2)I`

D

`(I)/(n^(2))`

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(max)=I_(1)+I_(2)+2 sqrt(I_(1)I_(2)) cos phi`
`=I_(1)+I_(2)+2 sqrt(I_(1)I_(2)) " " [ :. cosphi=cos theta^(@)=1]`
`=[ sqrt(I_(1))+sqrt(I_(2))]^(2)`
`:.` Due to .n. waves of same intensity.
`I_(max)=[ sqrt(I_(0))+sqrt(I_(0))+sqrt(I_(0)+....]^(2)`
`I_(max)=[nsqrt(I_(0))]^(2)=n^(2)I_(0)`
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KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
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  3. The maximum intensity obtained due to the superposition of waves of 'n...

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  4. Interference pattern is formed from two coherent sources of same inten...

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  5. In a Young's experiment, the distance between two slits is 0.2 mm. If ...

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  6. The shape of interference fringe obtained on screen by using monochrom...

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  7. Path difference between two waves superposing at one point is 132, so ...

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  8. In Young's experiment, dark fringe of 5th order is obtained at point P...

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  9. In Young's experiment distance between 5^(th) dark fringe and 3rd brig...

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  10. In double slit experiment, the point on the screen where 3^(rd) order ...

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  11. If path difference between two wave superposing at a point is (3)/(2) ...

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  12. In Young's experiment distance between two consecutive dark fringes is...

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  13. If white light is used instead of sodium light in the Young's experime...

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  14. only the central fringe will be white, all other will look colourful. ...

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  15. In Young's experiment if mica disc of thickness t and refractive index...

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  16. A glass plate of thickness d and refractiv index n is placed on the pa...

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  17. In the Young's double slit experiment, the slits are 0.4 cm apart and ...

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  18. 92 fringes are obtained in the definite distance R on screen by Young'...

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  19. In Young's slit experiment, if the distance between two slits is halve...

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  20. In the Young's experiment, when a plate of thickness lambda and refrac...

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