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NEET
Exam
NEET
Subject
Physics
Chapter
Dual Nature of Matter

NEET · Physics · Dual Nature of Matter

Assertion (A) Electromagnetic waves exert pressure, called...

Assertion (A) Electromagnetic waves exert pressure, called radiation pressure. Reason (R) This is because they carry energy.

Options

  1. ABoth AA and RR are true and RR is a correct explanation for A\mathrm{A}.
  2. BBoth AA and RR are true but RR is not a correct explanation for A\mathrm{A}.
  3. CAA is true but RR is false.
  4. DAA is false but RR is true.

Correct answer

B. Both AA and RR are true but RR is not a correct explanation for A\mathrm{A}.

Step-by-step solution

Electromagnetic waves (EMW) exerts pressure, called radiation pressure. In perfect reflecting waves, p=2I/Cp=2 I / C In perfect absorbing waves, p=I/Cp=I / C So, Assertion is true. EMW exert pressure on the surface because they carry energy also. Therefore reason is also true. But, Reason (R) is not a correct explanation of Assertion (A).
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