From the list below, correctly choose the variables that can be used to increase the resolution...

From the list below, correctly choose the variables that can be used to increase the resolution of a grating.

A. Match the blaze angle to the entrance slit width for maximum throughput.

B. Minimize the blaze angle to reduce diffraction effects.

C. Increase the groove density (finer ruled grating).

D. Increase the total number of grooves by increasing the grating length.

E. Increase the size of the individual grooves with a constant grating length.

Expert Solution

From the list below, correctly choose the variables that can be used to increase the resolution of a grating.:

Answer: C. Increase the groove density (finer ruled grating).

Explanation:

The limit of resolution of a grating is theoretically R = mN,

where m is the grating order and N is the total number of grooves illuminated on the grating.

To increase the resolution we could think of increasing N by obtaining a finer-ruled grating. However, you must know that, if you do this, certain orders disappear and the maximum value for m decreases.

grooves can be increased with a finer ruled grating and a longer grating.

queen_honey_blossom answered 2 years ago

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