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Question

When a wave pulse travelling in a string is reflected from a rigid wall to which string is tied as shown in figure. For this situation two statements are given below.
(1) The reflected pulse will be in same orientation of incident pulse due to a phase change of π radians
(2) During reflection the wall exert a force on string in upward direction
For the above given two statements choose the correct option given below.

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A
Only (1) is true
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B
Only (2) is true
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C
Both are true
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D
Both are wrong
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Solution

The correct option is D Both are wrong
Reflected pulse will be inverted as it is reflected by a denser medium.
Since there will be phase change of π.
The wall exerts force in downward direction.

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