A commercial diffraction grating has 500 lines per mm. Part A When a student shines a 480 nm laser through this grating, how man
y bright spots could be seen on a screen behind the grating
1 answer:
Answer:
The number of bright spot is m =4
Explanation:
From the question we are told that
The number of lines is
The wavelength of the laser is
Now the the slit is mathematically evaluated as
Generally the diffraction grating is mathematically represented as
Here m is the order of fringes (bright fringes) and at maximum m
So
=>
This implies that the number of bright spot is m =4
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