Assertion `:` In the `nth` normal mode of vibration of a string, there are `(n+1)` nodes and `n` antinodes.
Reason `:` This is because both the ends of the string are fixed and from nodes.

Options

A. both, Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B. both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. both,Assertion and Reason are false.

Answer

A

Explanation

Reason is correct explanation of the assertion, which it true.
Position of nodes is given by
`x=0,(L)/(n), (2L)/(n), (3L)/(n)......(nL)/(n)`
Antinodes are at `x=(L)/(2n), (3L)/(2n), (5L)/(n),......`