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Q. 20

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 955

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Short Answer

For what slit-width-to-wavelength ratio does the first minimum of a single-slit diffraction pattern appear at (a) , (b) , and (c)

a. Slit width to wavelength foris.

b. Slit width to wavelength foris.

c. Slit width to wavelength foris.

See the step by step solution

Step by Step Solution

Step 1: Formula for first order grating

The angles at which dark fringes is,

Slit width to wavelength ratio is,

Step 2: Calculation for (part a)

(a).

For :

The first order grating is,

Substitute value,

we get,

Step 3: Calculation for(part b)

(b).

For :

The first order grating is,

Substitute value,

We get,

Step 4: Calculation for(part c)

(c).

For :

The first order grating is,

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