Question

A slit of width a is illuminated by red light of wavelength
6500 Å. If the first minimum falls at ϴ = 30°, the value of a is
(a) 6.5 × 10⁻⁴ mm (b) 1.3 micron
(c) 3250 Å (d) 2.6 × 10⁻⁴ cm

Answer 1

option c is correct answer

Answer 2

Answer:

A slit of width a is illuminated by red light of wavelength

A slit of width a is illuminated by red light of wavelength6500 Å. If the first minimum falls at ϴ = 30°

the value of a is

3250 Å

Explanation:

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