Sound Test

Directions For Questions

Ultrasonic and Infrasonic Waves: The sound having frequency between $$20$$ Hz to $$20$$ kHz is called audible sound. Human ear cannot hear sound of frequencies lying outside this range. The limits of audibility of sound vary from individual. Generally the upper limit decreases with increase of age of individual; usually and people can not hear sound of frequency more than $$15$$ kHz.
Sound of frequencies below $$20$$ Hz are called infrasonics, while frequencies beyond $$20$$ kHz are called ultrasonics. Ultrasonics can be heard by dogs, cat, bats, etc. Bats detect the path by means of ultrasonics. Ultrasonics can be used for diagnosis of turnover and other abnormalities within our body. This is known as ultrasonography. Ultrasonics are used to cure various diseases and to measure depth of oceans to detect submarines.

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Sound Test - 41...

Question 1

The liquid in the filled vessel absorbs the vibrations of the liquid molecules

The air molecules in empty vessel have greater amplitude and hence greater intensity than liquid molecules in the filled vessel

The density of air is less than the density of liquid contained in the vessel when filled

The kinetic energy of particles constituting the air column is greater as compared to the kinetic energy of particles of liquid column

Question 2

$$5 \ cm$$

$$10 \ cm$$

$$2.5 \ cm$$

Cannot be found

Question 3

Time period

Wavelength

Amplitude

frequency

Question 4

25 sec

10 sec

5 sec

50 sec

Question 5

$$2.5\ s$$

$$0.1\ s$$

$$0.25\ s$$

$$4\ s$$

Question 6

50 ms

100 ms

10 ms

5 ms

Question 7

5 Hz

10 Hz

50 Hz

500 Hz

Question 8

$$2.5\ s$$

$$2.5\ ms$$

$$2.5\ \mu s$$

$$25\ s$$

Question 9

Bats only

Human beings only

Bats and human beings

Neither bats nor human beings

Question 10

$$10$$ waves

$$5$$ waves

$$1$$ wave

$$3$$ waves

User

Question Analysis

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