Question

True or False:-
1. The number of oscillations per
second of a vibrating object is
called its time period.
2. Noise pollution may cause
partial hearing impairment.
3. Dolphins have an unusual ability
of sensing low pitch sound.
4. The sound waves are collected
by pinna.
​

Answer 1

Answer:

True

True

False

True

Explanation:

Brainliest

Answer 2

Answer:

4is correct

2is correct

remaining don't know