MCQ
The Doppler effect is applicable for
  • A
    Sound waves only
  • B
    Light waves only
  • Both sound and light waves
  • D
    None of these

Answer

Correct option: C.
Both sound and light waves
c
The Doppler effect is applicable for both sound and light waves.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

$Assertion :$ It is hotter over the top of a fire than at the same distance of the sides.

$Reason :$ Air surrounding the fire conducts more heat upwards.

A uniform disc with mass $M=4\,kg$ and radius $R=$ $10\,cm$ is mounted on a fixed horizontal axle as shown in figure. A block with mass $m =2\,kg$ hangs from a massless cord that is wrapped around the rim of the disc. During the fall of the block, the cord does not slip and there is no friction at the axle. The tension in the cord is_______ $N$

$\left(\right.$ Take $\left.g =10\,ms ^{-2}\right)$

A solenoid is at potential difference $60\, V$ and current flows through it is $15$ ampere, then the resistance of coil will be ............ $\Omega$
When light of wavelength $\lambda $ is incident on an equilateral prism kept in its minimum deviation position, it is found that the angle of deviation equals the angle of the prism itself. The refractive index of the material of the prism for the wavelength $\lambda $ is, then
The velocity-displacement graph of a particle is shown in the figure.

The acceleration-displacement graph of the same particle is represented by :

The energy required to take a satellite to a height $‘h’$ above Earth surface (radius of Earth $= 6.4 \times 10^3\,km$ ) is $E_1$ and kinetic energy required for the satellite to be in a circular orbit at this height is $E_2.$ The value of $h$ for which $E_1$ and $E_2$ are equal is
A semiconductor $X$ is made by doping a germanium crystal with arsenic $(Z=33)$ . A second semiconductor $Y$ is made by doping germanium with indium $(Z=49)$. The two are joined end to end and connected to a battery as shown. Which of the following  statements is correct
A body has speed $V, 2V$ and $3V$ in first $1/3$ of distance $S$, seconds $1/3$ of $S$ and third $1/3$ of $S$ respectively. Its average speed will be
The velocities of $A$ and $B$ are marked in the figure. The velocity of block $C$ is  ......... $m/s$ (assume that the pulleys are ideal and string inextensible)
Advantage of optical fibre