AIIMS 2018 Physics Reflection of Waves MCQ Question
Assertion: In a string wave, during reflection from fix boundary, the reflected wave is inverted.
Reason: The force on string by clamp is in downward direction while string is pulling the clamp in upward direction.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
In a string wave, when a wave reflects off a fixed boundary, it undergoes a phase inversion, meaning the reflected wave is inverted compared to the incident wave. This occurs because the fixed boundary exerts a downward force on the string, while the string, attempting to maintain tension, pulls upward on the boundary, resulting in an inversion of the wave. Options B, C, and D are incorrect because the inversion is a fundamental characteristic of wave reflection at a fixed boundary, independent of the specific properties of the string or the nature of the boundary.
Found an issue with this question?