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Physics Part-II

Wave Optics

In deriving the single slit diffraction pattern, it was stated

Physics Part-II

Class 12

NCERT

Chapter 1: Ray Optics and Optical Instruments

41 questions

Chapter 2: Wave Optics

30 questions

Answer the following questions:

(a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.

(b) As you have learnt in the text, the principle of linear superposition of wave displacement is basic to understanding intensity distributions in diffraction and interference patterns. What is the justification of this principle?

In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n

λ

/a. Justify this by suitably dividing the slit to bring out the cancellation.

What speed should a galaxy move with respect to us so that the sodium line at

589.0 nm

is observed at

589.6 nm

View all question

Chapter 3: Dual Nature of Radiation and Matter

44 questions

Chapter 4: Atoms

23 questions

Chapter 5: Nuclei

38 questions

Chapter 6: Semiconductor Electronics: Materials, Devices and Simple Circuits

25 questions

Question

Easy

Solving time: 3 mins

In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n $λ$ /a. Justify this by suitably dividing the slit to bring out the cancellation.

Name: Video solution 1: [Solved] In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of nλ/a. Justify this by suitably dividing the slit to bring out the cancellation. - Physics Part-II
Uploaded: 2022-12-09T05:14:57.000Z
Duration: 6 min
Description: Video solution 1: [Solved] In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of nλ/a. Justify this by suitably dividing the slit to bring out the cancellation. - Physics Part-II

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Updated on: Dec 9, 2022

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Physics Part-II (NCERT)

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In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n

λ

/a. Justify this by suitably dividing the slit to bring out the cancellation.

14 mins ago

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Text solutionVerified

Consider that a single slit of width

d

is divided into

n

smaller slits.

Width of each slit,

d_{1} = d / n

Angle of diffraction is given by the relation,

θ = (d λ / d_{1}) / d = λ / d_{1}

Now, each of these infinitesimally small slit sends zero intensity in direction

θ

. Hence, the combination of these slits will give zero intensity.

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Practice more questions from Physics Part-II (NCERT)

Answer the following questions:

(a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.

In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n

λ

/a. Justify this by suitably dividing the slit to bring out the cancellation.

What speed should a galaxy move with respect to us so that the sodium line at

589.0 nm

is observed at

589.6 nm

View all

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Question Text	In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n $λ$ /a. Justify this by suitably dividing the slit to bring out the cancellation.
Updated On	Dec 9, 2022
Topic	Wave Optics
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 1
Upvotes	132
Avg. Video Duration	6 min

In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n $λ$ /a. Justify this by suitably dividing the slit to bring out the cancellation.

Text solutionVerified

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In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of nλ/a. Justify this by suitably dividing the slit to bring out the cancellation.

Text solutionVerified

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In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n $λ$ /a. Justify this by suitably dividing the slit to bring out the cancellation.