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Standard XI
Physics
Pendulums
Question

Reason
The bob possesses horizontal velocity at the mean position.
Assertion
If the string of an oscillating simple pendulum is cut, when the bob is at the mean position, the bob falls along a parabolic path.
If the string of an oscillating simple pendulum is cut, when the bob is at the mean position, the bob falls along a parabolic path.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Assertion is incorrect but Reason is correct
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Solution
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Correct option is B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Option B is correct. Because correct explanation is that when string is cut net force acting on bob is only gravitational force, so under the influence of gravity (constant) bob always follow parabolic path

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Similar Questions
Q1
Reason
The bob possesses horizontal velocity at the mean position.
Assertion
If the string of an oscillating simple pendulum is cut, when the bob is at the mean position, the bob falls along a parabolic path.
If the string of an oscillating simple pendulum is cut, when the bob is at the mean position, the bob falls along a parabolic path.
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Q2
Assertion :If the string of an oscillating simple pendulum is cut, when the bob is at the mean position, the bob falls along a parabolic path. Reason: The bob possesses horizontal velocity at the mean position.
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Q3
Reason
The velocity of oscillating bob in simple harmonic motion is maximum at the mean position.
Assertion
For an oscillating simple pendulum the tension in the string is maximum at the mean position and minimum at the extreme position.
For an oscillating simple pendulum the tension in the string is maximum at the mean position and minimum at the extreme position.
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Q4
Assertion :For an oscillating simple pendulum, the tension in the string is maximum at the mean position and minimum at the extreme position. Reason: The velocity of the oscillating bob in simple harmonic motion is maximum at the mean position.
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Q5
A simple pendulum is oscillating with an angular amplitude 60∘. The ratio of tensions in the string when the bob reaches the mean position and the extreme position respectively is :
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