A plane electromagnetic wave is propagating along the direction i ^ + j ^ 2 , with its polarization along the direction k . ^ The correct form of the magnetic field of the wave would be (here B 0 is an appropriate constant):

B 0 i ^ - j ^ 2 c o s ω t - k i ^ + j ^ 2

B 0 j ^ - i ^ 2 c o s ω t + k i ^ + j ^ 2

B 0 k ^ c o s ω t - k i ^ + j ^ 2

B 0 i ^ + j ^ 2 c o s ω t - k i ^ + j ^ 2

MEDIUM

Earn 100

The pitch of a sound wave depends upon which one of its following characteristics?

50% studentsanswered this correctly

Important Questions on Waves

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Ultrasonic waves are produced by making use of ____.

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

What is the velocity of sound in air?

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Which of the following statements is correct?

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

An echo is heard after

5

seconds of the production of sound which moves with a speed of

340 m / s

. What is the distance of the mountain from the sources of sound which produced the echo?

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

The speed of sound in seawater is _____:

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

The property of the sound waves that determines the pitch of the sound is its________________.

MEDIUM

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

For a wave, wavelength divided by the time period is equal to_____.

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

A plane electromagnetic wave of wavelength

λ

has an intensity

I

. It is propagating along the positive

Y -

direction. The allowed expressions for the electric and magnetic fields are given by:

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Which of the following wave types is an example of the waves produced by a moving motorboat on water's surface?

MEDIUM

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Which of the following animals can produce ultrasound?

HARD

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

The frequency (in Hz) of a note that is one octave higher than 500 Hz is

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Waves produced at the bottom of the sea due to an explosion are _____:

HARD

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

A sound wave has a frequency of

4

kHz and a wavelength of

30

cm. How long will it take to travel

2.4

km?

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Sound waves cannot travel through a

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Out of the following options which one can be used to produce a propagating electromagnetic wave?

MEDIUM

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

Assume that the displacement

(s)

of air is proportional to the pressure difference

(Δ p)

created by a sound wave. Displacement

(s)

further depends on the speed of sound

(v)

, density of air

(ρ)

and the frequency

(f)

. If

Δ p = 10 Pa, n = 300 m s^{- 1}, p = 1 kg m^{- 3}

and

f = 1000 Hz

, then

s

will be of the order of (take the multiplicative constant to be

1

)

MEDIUM

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

A plane electromagnetic wave is propagating along the direction

\frac{\hat{i} + \hat{j}}{\sqrt{2}},

with its polarization along the direction

\hat{k .}

The correct form of the magnetic field of the wave would be (here

B_{0}

is an appropriate constant):

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

In which of the following medium does sound travel the fastest?

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

The speed of sound is maximum in _____:

EASY

Physics>Oscillations and Waves>Waves>Transverse and Longitudinal waves

What is the noise level of normal conversation?

$1 .$ About $60$ dB
$2 .$ About $70$ dB
$3 .$ About $80$ dB
$4 .$ About $90$ dB

The pitch of a sound wave depends upon which one of its following characteristics?

Important Questions on Waves

Learn and Prepare for any exam you want !