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Problem Solving Assessment(PSA)

Question-1
Speed of sound in methanol in ms^-1is:

(A) 1207	(B) 1103
(C) 1498	(D) 1531

Question-2
What is the speed of sound in Air in m/s?

(A) 316	(B) 346
(C) 1284	(D) 1207

Question-3
The vibration made by the eardrum is amplified several times by ,

(A) The hammer	(B) The anvil
(C) The stirrup	(D) all the above

Question-4
Which of these following options corresponds to more number of compressions and rarefactions passing a fixed point per unit time?

(A) High pitch sound	(B) Low pitch sound
(C) Low frequency sound	(D) High amplitude sound

Question-5
The acronym SONAR stands for:

(A) Satellite Navigation And Ranging	(B) System Navigation And Ranging
(C) Sound Navigation And Ranging	(D) Light Navigation and Ranging.

Question-6
The sound of single frequency is called:

(A) Tone	(B) Note
(C) Timber	(D) None of these

Question-7
S.I unit of wave length (λ) is

(A) centimetre	(B) millimetre
(C) killometre	(D) metre

Question-8

Which of the following gives a measure of response of the ear to the sound?

(A) Loudness	(B) Intensity
(C) Frequency	(D) Wavelength

Question-9
At the end of the auditory canal there is a thin membrane called:

(A) Cochlea	(B) Anvil
(C) Tympanic membrane	(D) Stirrup

Question-10
The sound which is produced due to a mixture of several frequencies is referred to as:

(A) Tone	(B) Note
(C) Timber	(D) Music

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Std 9

CBSE

Practice in Related Chapters
Motion
Gravitation
Force and Laws of Motion
Work and Energy
Sound