Two separate Young’s double-slit experiments are performed with light of wavelengths and

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Two separate Young’s double-slit experiments are performed with light of wavelengths

500\,\text{nm}

and

600\,\text{nm}

, keeping the slit separation and the screen distance identical. What is the ratio

\dfrac{β_{600}}{β_{500}}

of the fringe widths obtained? (a)

\dfrac{5}{6}

(b)

\dfrac{6}{5}

(c)

\dfrac{36}{25}

(d)

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