Concept explainers
A One of the slits in a Young’s double-slit apparatus is wider than the other, so that the amplitude of the light that reaches the central point of the screen from one slit alone is twice that from the other slit alone. Determine the resultant intensity as a function of the direction
The resultant intensity as a function of the wavelength of the incident light
Answer to Problem 89PQ
The resultant intensity as a function of the wavelength of the incident light
Explanation of Solution
Given that the one of the slit in the Young’s double slit apparatus is wider than the other, so that the amplitude of the light on the central portion is twice alone than the other.
Write the relation of the intension anywhere on the screen.
Where,
Here,
The amplitude of light from first slit.
The amplitude of the light from other slit.
Here,
The resultant amplitude
Conclusion:
Substitute,
Take square both the sides.
Take
Substitute,
Substitute,
Substitute,
Substitute,
Therefore, the resultant intensity as a function of the wavelength of the incident light
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Chapter 35 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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