Class VIII

Signals are sent auditory nerves to
  1. brain
  2. heart
  3. ear drum
  4. retina
Loudness is measured in units called
  1. Hertz
  2. decibels
  3. Pascal
  4. ampere
A form of energy which is produced by vibrations and can be detected by ears is called
  1. sound
  2. waves
  3. heat
  4. electric current
Unwanted sounds are called
  1. noises
  2. pleasant
  3. fruitful
  4. healthy
A distinctive quality of a sound which depends on frequency of sound is called a
  1. pitch
  2. frequency
  3. ultrasound
  4. infrasound
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP