Wavelength

Q.

The S.I. unit of wavelength is ___.

1. decibel

2. second

3. metre

4. metre per second

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

Q.

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

1. $\frac{\lambda }{2}$

2. $\frac{\lambda }{4}$

3. $\frac{\lambda }{8}$

4. $\frac{\lambda }{16}$

Q.

The distance between a compression and the immediate next rarefaction of a longitudinal wave is:

1. 

2. 2λ

3. 

4. 

Q. The distance between any two consecutive compressions and rarefactions is termed as:

1. Wave point
2. Frequency
3. Amplitude
4. Wavelength

Q. If 'L' is the wavelength, then the distance between any two consecutive rarefaction is:

1. L
2. 4L
3. 2L
4. 3L

Q. The greek letter ____ is used to denote wavelength.

1. Δ (delta)
2. α (alpha)
3. λ (lambda)
4. Ω (Omega)

Q.

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

1. 1 mm

2. 1.5 mm

3. 3 mm

4. 4.5 mm

Q.

If the wavelength of a sound wave is 40 cm and the time period T = 0.005 s, how many seconds will it take to travel 4 km?

1. 5 seconds

2. 10 seconds

3. 20 seconds

4. 50 seconds

Q.

What is the relationship between wavelength and frequency of a wave, if its velocity is constant?

1. Wavelength is directly proportional to the frequency.

2. Wavelength is inversely proportional to the frequency.

3. Wavelength is directly proportional to the square of the frequency.

4. Wavelength is twice the frequency.