EASY
Earn 100

Draw a displacement-time graph of a longitudinal wave.

Important Questions on Waves and Sound

MEDIUM
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
When the pitch of the note produced by a harmonium is lowered, then the wavelength of the note:
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
If five waves are produced in one second, then the time period of one wave is
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion

A sound of a certain frequency is travelling at speed of 330 m/s in a given medium. Calculate the frequency, if its wavelength is 3 m.

MEDIUM
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Draw the sketches of two waves A and B such that wave B has twice the wavelength and half the amplitude of wave A.
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The amplitude of a wave is a measure of its
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
A loud sound is produced by striking a drum harder. Give reasons.
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion

The longitudinal waves travel in a coiled spring at a rate of 4 ms. The distance between two consecutive compressions is 20 cm. Find the wavelength of the wave.

EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
A human heart beats 75 times a minute. Calculate its frequency.
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Explain the term wavelength in cases of (a) longitudinal wave and (b) transverse wave. Write its SI unit.
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The distance between a crest and a trough is 20 cm in ripples on the surface of water. When 20 ripples are produced in one second, calculate the time period.
MEDIUM
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
In the sound wave produced by a vibrating tuning fork shown in the diagram, half the wavelength is represented by:
Picture 8
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The distance between two successive rarefaction is called
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Calculate the frequency of the pendulum of a wall-clock, if its time period is 0.2 s.
MEDIUM
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the string, what is their wavelength?
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
What are the SI units for frequency and wavelength?
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Sound travels with a speed of 330 m/s. What is the wavelength of sound whose frequency is 660 Hz?
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
50 waves pass through a point in 0.1 second. If the distance between one crest and the adjacent trough is 0.34 m, calculate the frequency,
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
Derive the relationship between time period and frequency.
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The distance between two consecutive compressions of a sound wave is 5 cm. The wavelength of the wave is.
EASY
Physical and Earth Science>Relationships>Waves and Sound>Basic Terms in Wave Motion
The SI unit of frequency is