Question

A wave is propagating along a string with a speed of $320cm/s$ as shown in the figure above.
Find out the amplitude of the given travelling wave ?

• A. $1cm$
• B. $2cm$
• C. $4cm$
• D. $8cm$
• E. $16cm$

Answer 1

The correct option is A $1cm$

Amplitude of the wave is equal to height of the crest or depth of the trough.

From figure, magnitude of height of crest or depth of trough is $1$ $cm$

Thus amplitude of wave is $1$ $cm$