Waves MCQs

Option A: One

Option B: Two

Option C: Four time

Option D: None of these

Correct Answer: Two ✔

Option A: 42Hz

Option B: 7 Hz

Option C: 256Hz

Option D: 262Hz

Correct Answer: 7 Hz ✔

Option A: isothermal law

Option B: adiabatic law

Option C: isochoric law

Option D: all of the above

Correct Answer: adiabatic law ✔

Option A: Longitudinal

Option B: Transverse

Option C: Periodic

Option D: both A and C

Correct Answer: both A and C ✔

Option A: ML-1T-2

Option B: ML-2T-2

Option C: MLT-2

Option D: ML2T-2

Correct Answer: ML-1T-2 ✔

Option A: only even harmonics are present

Option B: only odd harmonics are present

Option C: both even and odd harmonics are present

Option D: selected harmonics are present

Correct Answer: both even and odd harmonics are present ✔

Option A: 1/4f

Option B: 1/2f

Option C: frequency lower than 20 Hz

Option D: 2f

Correct Answer: frequency lower than 20 Hz ✔

Option A: sound wave only

Option B: light wave only

Option C: both sound and light waves

Option D: neither sound nor light wave

Correct Answer: both sound and light waves ✔

Option A: diffraction of sound waves

Option B: constructive and destructive interference

Option C: polarization

Option D: destructive interference

Correct Answer: constructive and destructive interference ✔

Option A: silence zone

Option B: interference

Option C: beats

Option D: resonance

Correct Answer: beats ✔

Option A: 313°C

Option B: 586°C

Option C: 819°C

Option D: 1172°C

Correct Answer: 819°C ✔

Option A: 20000 to 30000 hertz

Option B: 10 to 20 hertz

Option C: 2000 to 4000 hertz

Option D: 6000 to 8000 hertz

Correct Answer: 2000 to 4000 hertz ✔

Option A: increases

Option B: decreases

Option C: remains unchanged

Option D: may increase or decrease

Correct Answer: decreases ✔

Option A: 1.61 ms-1

Option B: 61.0 ms-1

Option C: 0.61 ms-1

Option D: 2.00 ms-1

Correct Answer: 0.61 ms-1 ✔

Option A: they are transverse waves

Option B: they are stationary waves

Option C: they require material medium for propagation

Option D: they do not have enough energy

Correct Answer: they require material medium for propagation ✔

Option A: refraction

Option B: polarization

Option C: interference

Option D: diffraction

Correct Answer: polarization ✔

Option A: decreases

Option B: increases

Option C: remains the same

Option D: any of above

Correct Answer: increases ✔

Option A: decreases

Option B: increases

Option C: remains unchanged

Option D: becomes zero

Correct Answer: remains unchanged ✔

Option A: matter waves

Option B: electromagnetic waves

Option C: carrier waves

Option D: mechanical waves

Correct Answer: mechanical waves ✔

Option A: Dopplers effect

Option B: Interference of waves

Option C: Beats phenomena

Option D: All of these

Correct Answer: Dopplers effect ✔

Option A: Number of loops

Option B: Tension in the string

Option C: Point where string is plucked

Option D: both A and C

Correct Answer: both A and C ✔

Option A: Two times

Option B: Three times

Option C: Four time

Option D: Six time

Correct Answer: Four time ✔

Option A: 281m/sec

Option B: 333m/sec

Option C: 340m/sec

Option D: all of the above

Correct Answer: 281m/sec ✔

Option A: fopen = 2 fclosed

Option B: fclosed = 2fopen

Option C: fopen = fclosed

Option D: fopen = 1 / f closed

Correct Answer: fopen = 2 fclosed ✔

Option A: an apparent increase in frequency

Option B: an apparent decrease in frequency

Option C: an apparent decrease in wavelength

Option D: no apparent change in frequency

Correct Answer: an apparent decrease in frequency ✔

Option A: constructive interference

Option B: destructive interference

Option C: beats

Option D: resonance

Correct Answer: destructive interference ✔

Option A: the sum of the frequencies of two tuning forks

Option B: the difference of the frequencies of two tuning forks

Option C: the ratio of the frequencies of two tuning forks

Option D: the frequency of either of the two tuning forks

Correct Answer: the difference of the frequencies of two tuning forks ✔

Option A: frequency in the audible range

Option B: frequency is greater than 20 kHz

Option C: frequency lower than 20 Hz

Option D: all of above

Correct Answer: frequency is greater than 20 kHz ✔

Option A: 313°C

Option B: 586°C

Option C: 819°C

Option D: 1172°C

Correct Answer: 819°C ✔

Option A: Water

Option B: air

Option C: copper

Option D: ammonia

Correct Answer: copper ✔

Option A: 332 ms-1

Option B: 320 ms-1

Option C: Zero

Option D: 224 ms-1

Correct Answer: Zero ✔

Option A: adiabatic

Option B: isothermal

Option C: isobaric

Option D: isochoric

Correct Answer: isothermal ✔

Option A: always an node in formed

Option B: always an antinode is formed

Option C: neither node nor antinode is formed

Option D: sometimes a node and sometimes an antinode is formed

Correct Answer: always an node in formed ✔

Option A: antinodes

Option B: nodes

Option C: troughs

Option D: crests

Correct Answer: antinodes ✔

Option A: frequency

Option B: period

Option C: Wave length

Option D: phase difference

Correct Answer: Wave length ✔

Option A: energy

Option B: mass

Option C: both

Option D: none

Correct Answer: energy ✔