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Given below are two statements:
Statement I: A plane wave after passing through prism remains as plane wave but passing through small pin hole may become spherical wave.
Statement II: The curvature of a spherical wave emerging from a slit will increase for increasing slit width.
In the light of the above statements, choose the correct answer from the options given below

Asked in JEE Main 28th Jan 1st Shift 2026 · Wavefronts and Huygens construction

• (1) Both Statement I and Statement II are true
• (2) Statement I is true but Statement II is false
• (3) Statement I is false but Statement II is true
• (4) Both Statement I and Statement II are false

Step-by-step solution

Why the other options are wrong

• (1) Accepts Statement II, but a wider slit diffracts less and the wavefront gets flatter.
• (3) Rejects Statement I, though a prism only tilts a plane wavefront and a pinhole acts as a point source.
• (4) Rejects Statement I, which is correct.

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