(C) For the first minimum in a single slit diffraction pattern,the condition is given by $d \sin \theta = n \lambda$,where $n = 1$ for the first minim

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(C) For the first minimum in a single slit diffraction pattern,the condition is given by $d \sin \theta = n \lambda$,where $n = 1$ for the first minimum.Given: Wavelength $\lambda = 5000 \; \mathring{A} = 5000 \times 10^{-10} \; m = 5 \times 10^{-7} \; m$.Slit width $d = 0.001 \; mm = 10^{-3} \; mm = 10^{-6} \; m$.Substituting the values into the formula: $\sin \theta = \frac{\lambda}{d} = \frac{5 \times 10^{-7}}{10^{-6}} = 0.5$.Therefore,$\theta = \sin^{-1}(0.5) = 30^o$.

Class 12 Physics Wave Optics Single Slit Diffraction of Light

Easy

$A$ parallel beam of monochromatic light of wavelength $5000 \; \mathring{A}$ is incident normally on a single narrow slit of width $0.001 \; mm$. The light is focused by a convex lens on a screen placed on the focal plane. The first minimum will be formed for the angle of diffraction equal to ........$^o$.

AIPMT 1993 All AIPMT

A
$0$
B
$15$
C
$30$
D
$60$

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Wave Optics

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Single Slit Diffraction of Light

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AIPMT 1993 Paper All AIPMT years →

In Fraunhofer diffraction by a single slit,if the slit width is $a$,the wavelength is $\lambda$,and the focal length of the lens is $f$,what is the linear width of the central maximum?

Easy

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Light of wavelength $5000 \text{ Å}$ is incident normally on a slit. The first minimum of the diffraction pattern is observed to lie at a distance of $5 \text{ mm}$ from the central maximum on a screen placed at a distance of $2 \text{ m}$ from the slit. The width of the slit is: (in $\text{ cm}$)

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Define diffraction.

Medium

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Red light is generally used to observe the diffraction pattern from a single slit. If blue light is used instead of red light,then the diffraction pattern:

Easy

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Determine the angular separation between the central maximum and the first-order maxima of the diffraction pattern due to a single slit of width $0.25\, mm$ when light of wavelength $5890\,\mathring{A}$ is incident on it.

Medium

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In Fraunhofer diffraction by a single slit,if the slit width is $a$,the wavelength is $\lambda$,and the focal length of the lens is $f$,what is the linear width of the central maximum?

Light of wavelength $5000 \text{ Å}$ is incident normally on a slit. The first minimum of the diffraction pattern is observed to lie at a distance of $5 \text{ mm}$ from the central maximum on a screen placed at a distance of $2 \text{ m}$ from the slit. The width of the slit is: (in $\text{ cm}$)

Define diffraction.

Red light is generally used to observe the diffraction pattern from a single slit. If blue light is used instead of red light,then the diffraction pattern:

Determine the angular separation between the central maximum and the first-order maxima of the diffraction pattern due to a single slit of width $0.25\, mm$ when light of wavelength $5890\,\mathring{A}$ is incident on it.

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