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If the first minima in Young's double-sl...

If the first minima in Young's double-slit experiment occurs directly in front of one of the slits (distance between slit and screen `D = 12 cm` and distance between slits `d = 5 cm)`, then the wavelength of the radiation used can be

A

2 cm only

B

4 cm only

C

`2 cm, (2)/(3)cm, (2)/(5) cm`

D

`4cm, (4)/(3) cm, (4)/(5) cm `

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The correct Answer is:
A
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