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  • A single slit of width a is illuminated by a monochromatic light of wavelength 600 nm. The value of 'a' for which first minimum appears at <img alt="\theta" src="https://entrancecorner

A single slit of width a is illuminated by a monochromatic light of wavelength 600 nm. The value of 'a' for which first minimum appears at \theta = 30o on the screen will be :

Option: 1

0.6 \mu \mathrm{m}


Option: 2

3 \, \mu\, \mathrm{m}


Option: 3

1,8 \, \mu\, \mathrm{m}


Option: 4

1.2 \, \mu\, \mathrm{m}


Answers (1)

best_answer

For minima, a\sin \theta={\lambda}

a=1200nm

a=1.2\mu m

Posted by

chirag

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