MCQ
Sound waves in air cannot be polarized because:
  • A
    Their speed is small
  • B
    They require medium
  • These are longitudinal
  • D
    Their speed is temperature dependent

Answer

Correct option: C.
These are longitudinal

Sound waves are longitudinal 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

Two streams of protons move parallel to each other in the same direction. They will:
Two thin lenses, one of focal length + 60 cm and the other of focal length – 20 cm are put in contact. The combined focal length is
The charge given to a hollow sphere of radius $10\, cm$ is $3.2×10^{-19}\, coulomb$. At a distance of $4\, cm$ from its centre, the electric potential will be
An uncharged capacitor is connected to a battery. On charging the capacitor
The equivalent resistance between the points $A$ and $B$ is :-
Statement $-1$ : When ultraviolet light is incident on a photocell, its stopping potential is $V_0$ and the maximum kinetic energy of the photoelectrons is $K_{max}$ .When the ultraviolet light is replaced by $X-$rays, both $V_0$ and $K_{max}$ increase.
Statement $-2$ : Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light
The minimum energy required for the electron emission from the metal surface can be supplied to the free electrons by which of the following physical processes?
An electron revolves $6 × 10^{15}$ times/sec in circular loop. The current in the loop is
In the figure shown below, the charge on the left plate of the $10\, \mu F$ capacitor is $-30\,\mu C.$ The charge on the right place of the $6\,\mu F$ capacitor is.....$\mu C$
An e.m.f. of 12 volt is produced in a coil when the current in it changes at the rate of 45 amp/minute. The inductance of the coil is