Consider the optical system shown in figure. The point source of ligth S is having wavelength equal to `lambda`. The light is reaching screen only after reflection. For point P to be socond maxima, the value of `lambda` would be (`D gt gt d` and ` d gt gt lambda`)
Consider the optical system shown in figure. The point source of ligth S is having wavelength equal to `lambda`. The light is reaching screen only after reflection. For point P to be socond maxima, the value of `lambda` would be (`D gt gt d` and ` d gt gt lambda`)
A
`(12d^(2))/(D)`
B
`(6d^(2))/(D)`
C
`(3d^(2))/(D)`
D
`(24d^(2))/(D)`
Text Solution
Verified by Experts
The correct Answer is:
A
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At `P,Deltax=((8d)xx3d)/(D)` for `2^(nd)` maxima `Deltax=2lamdaimplies(24d^(2))/(D)=2lamda=(12d^(2))/(D)`
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Knowledge Check
Choose the most appropriate option. Two coherent point sources S_(1) and S_(2) vibrating in phase emit light of wavelength lambda . The separation between them is 2lambda . The light is collected ona screen placed at a distance D gt gt lambda from the slit S_(1) as shown. The minimum distance, so that intensity at P is equal to intensity at O.
Choose the most appropriate option. Two coherent point sources S_(1) and S_(2) vibrating in phase emit light of wavelength lambda . The separation between them is 2lambda . The light is collected ona screen placed at a distance D gt gt lambda from the slit S_(1) as shown. The minimum distance, so that intensity at P is equal to intensity at O.
A
`sqrt(2)D`
B
`sqrt(3)D`
C
`sqrt(8)D`
D
`sqrt(5)D`
Light of wavelength lambda is incident on a slit of width d and distance between screen and slit is D. Then width of maxima and width of slit will be equal if D is ––
Light of wavelength lambda is incident on a slit of width d and distance between screen and slit is D. Then width of maxima and width of slit will be equal if D is ––
A
`(d^(2))/(lambda)`
B
`(2d)/(lambda)`
C
`(2d^(2))/(lambda)`
D
`(d^(2))/(2lambda)`
Two points nonochromatic and coherent sources of light of wavelength lambda each are placed as shown in figure. The initial phase difference between the sources is zero O. (d gt gt d) . Mark the correct statement(s).
Two points nonochromatic and coherent sources of light of wavelength lambda each are placed as shown in figure. The initial phase difference between the sources is zero O. (d gt gt d) . Mark the correct statement(s).
A
If `d = (7 lambda)/(2)`, O will be a minima
B
If `d = lambda`, only one maxima can be observed on the screen
C
If `d = 4.8 lambda`, then total 10 minima would be there on the screen
D
If `d = (5 lambda)/(2)`, the intensity at O would be minimum.
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