NEETPhysicsOscillations
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : General vibration of a polyatomic molecule about its equilibrium position is periodic but not SHM. Reason (R) : A periodic motion can always be expressed as a sum of infinite number of harmonic motion with appropritate amplitude. In the light of the above statements, choose the most appropriate an
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true and (R) is NOT the correct explanation of (A).
- C(A) is true but (R) is false.
- D(A) is false but (R) is true.
Correct answer
B. Both (A) and (R) are true and (R) is NOT the correct explanation of (A).
Step-by-step solution
- Assertion (A): General vibration of a polyatomic molecule is periodic but not simple harmonic motion (SHM). This is true because the motion of atoms in a polyatomic molecule involves complex vibrations that are periodic but may not follow the characteristics of SHM (i.e., not necessarily sinusoidal). - Reason (R): A periodic motion can be expressed as a sum of an infinite number of harmonic motions with appropriate amplitudes (Fourier series). This is also true, as any periodic motion can be decomposed into harmo