Wave Length

Q.

The distance between two consecutive crests or trough of a wave is called its ___.

Q. Why is the sound longitudinal wave and not transverse wave ?

Q.

The distance between two consecutive compressions or rarefactions is called

1. Speed

2. Wavelength

3. Frequency

4. Amplitude

Q. Difference between pulse waves and periodic Waves

Q. sound wave has frequency 2Hz and wave length40cm .how long it taketo treval1.6 km

Q.

The distance between crest and through is 10m. Find the wavelength.

Q.

The distance between two adjacent crests (or troughs) of a wave is called its ______________ .

Q.

Explain the nature of Light and Sound waves. [3 MARKS]

Q. Why are sound wave are called mechanical wave

Q.

Which of the following correctly relates the wavelength λ, frequency f and velocity v of sound?

1. f = λ - v

2. v = f λ

3. v = λ² f

4. f = λ v²

Q. The given graph shows the displacement versus time relation for a disturbance travelling with a velocity of $1500{\text{m s}}^{-1}$. Calculate the wavelength of the disturbance in $\text{mm}$.

1. 3

Q.

Longitudinal waves travel at the speed of $10\mathrm{m}{\mathrm{s}}^{-1}$ in a coiled spring. If the distance between two successive rarefactions is $1.0\mathrm{cm}$, find the frequency of the wave.

Q. A guitar produces a sound which has a frequency of $300Hz$ and a wavelength of $1.3m$. Calculate the speed with which this sound travels.

1. $300m{s}^{-1}$
2. $280m{s}^{-1}$
3. $400m{s}^{-1}$
4. $390m{s}^{-1}$

Q. Sound is also a transverse wave.In which state the sound travels in transverse wave ? Explain.

Q. A sound source sends waves of 400 Hz. In a medium, this sound has a wavelength of 2.5 m. Find the speed of sound waves in the medium.

1. $100m{s}^{-1}$
2. $1000m{s}^{-1}$
3. $10000m{s}^{-1}$
4. $3000m{s}^{-1}$

Q. The given graph shows the displacement versus time relation for a disturbance travelling with a velocity of $1200{\text{m s}}^{-1}$. Calculate the wavelength of the disturbance in $\text{mm}$.

1. 2.4

Q.

How many light waves are there in a length of 4 micron if the wave length is 5 femto meter?

Q. The given graph shows the displacement versus time relation for a disturbance travelling with a velocity of $1500{\text{m s}}^{-1}$. Calculate the wavelength of the disturbance in $\text{mm}$.

1. 3

Q. The distance between a compression and the immediate next rarefaction of a longitudinal wave is:
($\lambda$ denotes wavelength)

1. $\frac{\lambda }{4}$
2. $2\lambda$
3. $\frac{\lambda }{2}$
4. $\frac{\lambda }{8}$

Q. The distance between a compression and its next rarefaction, in a sound wave of wavelength $\lambda$, will be:

1. $0.5\lambda$
2. $0.25\lambda$
3. $0.125\lambda$
4. $\lambda$

Q.

S.I. unit of wavelength of a wave is:-

1. Watt

2. Joule

3. Kilogram

4. Metre

Q. What is the amplitude of the vibration of the particle shown?​

1. 0.5 m
2. 1 m
3. 2 m
4. 4 m

Q. The speed of electromagnetic wave is same for

1. odd frequencies
2. even frequencies
3. all frequencies
4. all intensities

Q. A sound wave has a frequency of $1000Hz$ and a wavelength of $34cm$. How long will it take to travel $1km$?

1. $3.20s$
2. $2.94s$
3. $5.94s$
4. $3.10s$

Q. The wavelength of a sound wave is $40cm$ and the time period is $0.0005s$. How many seconds will it take to travel a distance of $4km$?

1. $5s$
2. $11s$
3. $7s$
4. $16s$

Q. The given graph shows the displacement versus time relation for a disturbance travelling with a velocity of $1500{\text{m s}}^{-1}$. Calculate the wavelength of the disturbance in $\text{mm}$.

1. 3

Q. What is the S.I. unit of wavelength?

1. decibel
2. metre
3. pascal
4. second

Q. What is wave number and wave length

Q. What is wavelength?

Q. What is wave number