A rope is attached at one end to a fixed vertical pole . It is stretched horizontal with a fixed value of tension `T` . Suppose at `t=0`, a pulse is generated by moving the free end of the rope up and down once with your hand. The pulse arrives at the pole at instant `t`.
Ignoring the effect of gravity, answer the following quetions.
In all the above, quetions we have considered a fixed value of tension. however, if tension in a given rope is increased and a pulse is genrated as described,

Options

A. Time taken for the pulse to reach the pole may increase to decrease
B. Time taken for the pulse to reach the pole will not change
C. Time taken for the pulse to reach the pole will increase
D. Time taken for the pulse to reach the pole will deacrease

Answer

d

Explanation

Time taken to reach other end is independent of frequency and amplitude `v=sqrt((T)/(m))`
As `m` increases, velocity decreases.
So time taken will be more or will increase.
As `T` increase, velocity also increases.
So time taken will be less or it will decreases.