Question

In young's double slit experiment, if the wavelength of
light is doubled then fringe-width will be
(A) equal (B) double (CHalf (D) one fourth​

Answer 1

Answer:

if the wavelength of  light is doubled then fringe-width will be Double

Explanation:

As we know that the formula of fringe width is given as

$w = \frac{\lambda L}{d}$

here we know that

d = distance between two slits

L = distance of slits from the screen

$\lambda$ = wavelength of the light

Now from above formula we can see that the fringe width is directly depending on the wavelength of light

So here if the wavelength of light is double then the fringe width must be double of initial value.

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Topic : Young's double slit experiment

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