Home
Class 12
PHYSICS
Let S1 and S2 be the two slits in Young'...

Let `S_1 and S_2` be the two slits in Young's double slit experiment. If central maxima is observed at P and angle `S_1 P S_2 = theta`, (`theta` is small) find the y-coordinates of the 3rd minima assuming the origin at the central maxima. (`lambda` = wavelength of monochromatic light used).`

A

`+-(2lambda)/theta`

B

`+-(5lambda)/(2 theta)`

C

`+- 5/2 lambda theta`

D

`+-2 lambda theta `

Text Solution

Verified by Experts

The correct Answer is:
B
`because theta = d/D`

Third minima,
`y=+- 2.5 omega = +- 2.5 ((lambdaD)/d) = +-(2.5lambda)/theta` .
Promotional Banner

Topper's Solved these Questions

  • INTERFERENCE AND DIFFRACTION OF LIGHT

    DC PANDEY|Exercise LEVEL 2 (single correct option)|1 Videos

  • INTERFERENCE AND DIFFRACTION OF LIGHT

    DC PANDEY|Exercise Level 2 More Than One Correct|6 Videos

  • INTERFERENCE AND DIFFRACTION OF LIGHT

    DC PANDEY|Exercise Subjective Questions|5 Videos

  • GRAVITATION

    DC PANDEY|Exercise All Questions|120 Videos

  • MAGNETIC FIELD AND FORCES

    DC PANDEY|Exercise Medical entrance s gallery|59 Videos