EASY
9th CBSE
IMPORTANT
Earn 100

A transverse wave consists of compressions and rarefactions.

57.14% studentsanswered this correctly

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 13
Temperature has no effect on speed of sound in air.
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 14
Frequency of infrasonic waves > Frequency of ultrasonic waves.
MEDIUM
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 15
Due to the high power of ultrasound waves, it is used for breaking and cutting objects.
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 16
Frequency×Time period= _____.
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 17

Sound is produced by a _____ body.

(vibrating/reflecting)

EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 18
Sound waves cannot travel through _____.
(metal / vacuum)
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 19
The frequency of a source of sound is 20 Hz. Its time period _____ second.
EASY
9th CBSE
IMPORTANT
Modern's abc+ Of Science - Physics For Class IX>Chapter 6 - Sound>CHAPTER PRACTICE TEST 1>Q 20
The multiple reflections of sound in a hall is called _____.