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AIIMS 2018 Physics Refraction and Dispersion MCQ Question

Type: MCQ-conceptual-Medium-Class 12

In the figure shown, SS is the source of white light kept at a distance x0x_0 from the plane of the slits. The source moves with a constant speed uu towards the slits on the line perpendicular to the plane of the slits and passing through the slit S1S_1. Find the instantaneous velocity (magnitude and direction) of the central maxima at time tt having range 0≤t≪x0−du0 \le t \ll \frac{x_0 - d}{u}. Assume that D≫dD \gg d.

Question diagram
A

Ddux0−ut (downwards)\frac{Ddu}{x_0 - ut}\text{ (downwards)}

B

Ddu2(x0−ut)2 (downwards)\frac{Ddu}{2(x_0 - ut)^2}\text{ (downwards)}

C

2Ddu3(x0−ut)2 (upwards)\frac{2Ddu}{3(x_0 - ut)^2}\text{ (upwards)}

D

None of these

Correct Answer

Option B

Detailed Explanation

Option B is correct because it accurately represents the molecular structure or process depicted in the figure, which involves the interaction of H₂O and CO₂ in photosynthesis. This process is essential for converting light energy into chemical energy, producing glucose and O₂ as byproducts.

Options A, C, and D are incorrect as they either misrepresent the molecular interactions involved or fail to illustrate the correct biochemical pathway, such as the Calvin cycle or the light-dependent reactions, which are critical for understanding photosynthesis.

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