A plane electromagnetic wave propagating along y-direction can have the following pair of electric field $(E)$ and magnetic field ( $B$ ) components.

The expected graphical representation of the variation of angle of deviation '

δ

' with angle of incidence 'i' in a prism is:

Topic:

Ray Optics and Optical Instruments

Exam:

JEE Mains 2021 July 27 Shift 2

View 2 solutions

A solenoid of 1000 turns per metre has a core with relative permeability 500 . Isolated windings of the solenoid carry an electric current of

5 A

. The magnitude flux density produced by the solenoids is : (permeability of free space

= 4 π \times 1 0^{- 7} H / m

)

$1 0^{- 4} π T$
$π T$
$\frac{π}{5} T$
$2 \times 1 0^{- 3} π T$

Topic:

Magnetism and Matter

Exam:

JEE Mains 2021 Mar 17 Shift 1

View 2 solutions

The colour coding on a carbon resistor is shown in the given figure. The resistance value of the given resistor is:

$(7500 \pm 375) Ω$
$(5700 \pm 285) Ω$
$(7500 \pm 755) Ω$
$(5700 \pm 375) Ω$

Topic:

Current Electricity

Exam:

JEE Mains 2021 Aug 27 Shift 2

View 5 solutions

Statement-I : By doping semiconductor with pentavalent material, the density increases.
Statement-II: The n-type semiconductor has net negative charge.
In the light of the above statements, choose the most appropriate answer from the options given below:

Both Statement I and Statement II are false
Both Statement I and Statement II are true
Statement I is false but Statement II is true
Statement I is true but Statement II is false

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Exam:

JEE Mains 2021 Aug 26 Shift 1

View 2 solutions

Practice questions from Electromagnetic Waves in the same exam

A source of light is placed in front of a screen. Intensity of light on the screen is I. Two Polaroids

Hard

P_{1}

are so placed in between the source of light and screen that the intensity of light on screen is

P_{2}

1/2. P_{2}

should be rotated by an angle of (degrees) so that the intensity of light on the screen becomes 3I/8..

Topic:

Electromagnetic Waves

Exam:

JEE Mains 2021 Aug 26 Shift 2

View 2 solutions

In an electromagnetic wave the electric field vector and magnetic field vector are given as

E = E_{0} \hat{i}

respectively. The direction of propagation of the electromagnetic wave is along :

B = B_{0} \hat{k}

$(- \hat{j})$
$\hat{j}$
$(- \hat{k})$
$\hat{k}$

Topic:

Electromagnetic Waves

Exam:

JEE Mains 2021 July 20 Shift 2

View 3 solutions

Match List-I with List-II

Hard

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
(a)-(ii), (b)-(i), (c)-(iv), (d)-(i)
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

Topic:

Electromagnetic Waves

Exam:

JEE Mains 2021 Mar 18 Shift 1

View 2 solutions

Which of the following are not electromagnetic waves?
(a) cosmic rays
(b)

γ

-rays
(c)

β

-rays
(d) X-rays

Topic:

Electromagnetic Waves

Book:

Arihant Physics JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Exam:

JEE Mains 2002

View 2 solutions

Practice more questions from Electromagnetic Waves

An EM wave radiates outwards from a dipole antenna, with

E_{0}

as the amplitude of its electric field vector. The electric field

E_{0}

which transports significant energy from the source falls off as

$\frac{1}{r ^{3}}$
$\frac{1}{r ^{2}}$
$\frac{1}{r}$
remains constant

Topic:

Electromagnetic Waves

Book:

Master Resource Book in JEE Main Physics (Arihant)

View 6 solutions

A linearly polarized electromagnetic wave given as

E_{r} = - E_{0} \hat{i} cos (k z - ω t)

is incident normally on a perfectly reflecting infinite wall at

z = a

. Assuming that the material of the wall is optically inactive, the reflected wave will be given as

$E_{r} = - E_{0} \hat{i} cos (k z + ω t)$
$E_{r} = E_{0} \hat{i} cos (k z - ω t)$
$E_{T} = - E_{0} \hat{i} cos (k z - ω t)$
$E_{T} = - E_{0} \hat{i} sin (k z - ω t)$

Topic:

Electromagnetic Waves

Book:

Master Resource Book in JEE Main Physics (Arihant)

View 5 solutions

Q.220. The mean power radiated by an elementary dipole is equal to P_o. Find the mean space density of energy of the electromagnetic field in vacuum in the far field zone at the point removed from the dipole by a distance r along the perpendicular drawn to the dipole's axis.

Hard

Topic:

Electromagnetic Waves

Book:

Problems in General Physics (IE Irodov)

View solution

An Electromagnetic Wave of frequency

v = 3.0 MHz

passes from vacuum into a dielectric medium with permittivity

ε = 4.0

. Them

Wavelength is doubled and the frequency remains unchanged
Wavelength is doubled and frequency becomes half
Wavelength is halved and frequency remains unchanged
Wavelength and frequency both become unchanged

Topic:

Electromagnetic Waves

View 4 solutions

Practice questions on similar concepts asked by Filo students

Two gears

A

are in contact. The radius of gear

B

A

is twice that of gear

B

. (a) When

A

's angular velocity is

6.00 Hz

counterclockwise, what is

B^{'}

s angular velocity?(b) If

A

's radius to the tip of the teeth is

10.0 cm,

what is the linear speed of a point on the tip of a gear tooth? What is the linear speed of a point on the tip of

B

's gear tooth?

Topic:

Physics

View solution

(a) What is the angle between a wire carrying an 8.00-A current and the 1.20-T field it is in if 50.0 cm of the wire experiences a magnetic force of

2.40 N

? (b) What is the force on the wire if it is rotated to make an angle of

9 0^{\circ}

with the field?

Topic:

Physics

View solution

The equivalent capacity between points

A

B

$4 m u F$
$\frac{5}{4} m u F$
$3 m u F$
$\frac{2}{3} m u F$

Topic:

Electrostats

View 11 solutions