Question:
Youngβs modulus of elasticity π is expressed in terms of three derived quantities, namely, the gravitational constant πΊ, Planckβs constant β and the speed of light π, as π = π πΌβ π½πΊ πΎ . Which of the following is the correct option?
Youngβs modulus of elasticity π is expressed in terms of three derived quantities, namely, the gravitational constant πΊ, Planckβs constant β and the speed of light π, as π = π πΌβ π½πΊ πΎ . Which of the following is the correct option?
Updated On: Jul 8, 2024
- πΌ = 7, π½ = β1, πΎ = β2
- πΌ = β7, π½ = β1, πΎ = β2
- πΌ = 7, π½ = β1, πΎ = 2
- πΌ = β7, π½ = 1, πΎ = β2
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The Correct Option is A
Solution and Explanation
The correct option is(A): πΌ = 7, π½ = β1, πΎ = β2.
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Concepts Used:
Youngβs Double Slit Experiment
- Considering two waves interfering at point P, having different distances. Consider a monochromatic light source βSβ kept at a relevant distance from two slits namely S1 and S2. S is at equal distance from S1 and S2. SO, we can assume that S1 and S2 are two coherent sources derived from S.
- The light passes through these slits and falls on the screen that is kept at the distance D from both the slits S1 and S2. It is considered that d is the separation between both the slits. The S1 is opened, S2 is closed and the screen opposite to the S1 is closed, but the screen opposite to S2 is illuminating.
- Thus, an interference pattern takes place when both the slits S1 and S2 are open. When the slit separation βd βand the screen distance D are kept unchanged, to reach point P the light waves from slits S1 and S2 must travel at different distances. It implies that there is a path difference in the Young double-slit experiment between the two slits S1 and S2.
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