# a narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equal to 6000 å and the angular width of the central maximum in the resulting diffraction pattern is measured. when the slit is next illuminated by light of wavelength λ’, the angular width decreases by 30%. calculate the value of the wavelength λ’.

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get a narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equal to 6000 å and the angular width of the central maximum in the resulting diffraction pattern is measured. when the slit is next illuminated by light of wavelength λ’, the angular width decreases by 30%. calculate the value of the wavelength λ’. from screen.

## The angular width of central maxima in the Fraunhofer diffraction pattern is measured. The slit is illuminated by the light of wavelength 6000 A If the slit is illuminated by a light of another wavelength, angular width decreases by 30

Click here👆to get an answer to your question ✍️ 10. A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength 2 equals to 6000 Å and the angular width of the central maxima in the resulting diffraction pattern is measured. When the slit is next illuminated by light of wavelength X', the angular width decreases by 30%. Calculate the value of the wavelength a'. 11. What are universal gates? How can AND gate be realized using an appropriate combination 2

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10. A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength 2 equals to 6000 Å and the angular width of the central maxima in the resulting diffraction pattern is measured. When the slit is next illuminated by light of wavelength X', the angular width decreases by 30%. Calculate the value of the wavelength a'. 11. What are universal gates? How can AND gate be realized using an appropriate combination 2

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## A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equals to 6000 Å and the angular width of the central maxima

A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equals to 6000 ... . Calculate the value of the wavelength λ'.

## A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equals to 6000 Å and the angular width of the central maxima

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## A narrow slit is illuminated by a parallel beam of monochromatic light

A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equal to 6000 Å and the angular width of the central maximum in the resulting diffraction pattern is measured. When the slit is next illuminated by light of wavelength λ’, the angular width decreases by 30%. Calcu

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## Question 24 - Physics CBSE Class 12 Sample Paper for 2023 Boards - Solution - Solutions to CBSE Sample Paper - Physics Class 12

Last updated at Sept. 30, 2022 by Teachoo

## A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength λ equal to 6000 Å and the angular width of the central maximum in the resulting diffraction pattern is measured. When the slit is next illuminated by light of wavelength λ’, the angular width decreases by 30%. Calculate the value of the wavelength λ’.

**Answer:**

Angular width 2φ = 2λ/d

Given λ = 6000 Å

In Case of new λ (assumed λ’ here),

angular width decreases by 30%

New angular width = 0.70 (2 φ)

2 λ’/d = 0.70 X (2 λ/d)

∴λ’= 4200 Å

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### Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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