Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions tagged electromagnetic-waves
Questions
A plane electromagnetic wave of frequency $25\: MHz$ travels in free space along the $x$ - direction. At a particular point in space and time, $E= 6.3 \: jV/m$. What is B at this point?
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
medium
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
The intensity of the sunlight reaching the earth is $1380\; W/m^2$. Calculate the amplitude of the magnetic field in the light wave. Assume the light to be a plane monochromatic wave.
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q31
medium
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
The wavelength of a radio wave of frequency of $1\: MHz$ is:
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q30
easy
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
Which of the following are not electromagnetic waves?
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q29
easy
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
Some radio waves of frequency of about $1.5 \times 10^9\: Hz$ was received by a radio-telescope from distant star. If the speed of the waves is $3 \times 10^5\: km/s$ , then the wave- length of the wave will be:
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q25
easy
asked
Feb 27, 2014
by
thanvigandhi_1
1
answer
Electromagnetic waves are transverse in nature is evident by
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q24
easy
asked
Feb 27, 2014
by
thanvigandhi_1
2
answers
Infrared radiation is detected by
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q23
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
The electromagnetic waves that stimulate blood circulation are
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q22
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
The oscillating electric & magnetic vectors of an electromagnetic wave are oriented along
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
Electromagnetic waves are produced by:
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q19
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
The pressure exerted by an electromagnetic wave of intensity $I$ on a non-reflecting surface is ($c$ is velocity of light)
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q18
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is $B_o = 510\: nT$. What is the amplitude o the electric field part of the wave?
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q17
easy
asked
Feb 26, 2014
by
thanvigandhi_1
1
answer
If $ V_x , V_m\: and\: V_r$ respectively are the speed of X-rays, microwaves and radio waves in air, then
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q15
easy
asked
Feb 25, 2014
by
thanvigandhi_1
1
answer
In an electromagnetic wave travelling in air, the amplitude $E_o$ and $B_o$ of the electric and magnetic fields are related as (here $c$ is the speed of the wave in air)
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
easy
asked
Feb 25, 2014
by
thanvigandhi_1
1
answer
The speed of electromagnetic waves in vacuum is given by
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
easy
asked
Feb 25, 2014
by
thanvigandhi_1
1
answer
A laser beam is used for carrying out surgery because it
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q12
easy
asked
Feb 25, 2014
by
thanvigandhi_1
1
answer
Laser beams are used to measure long distances because:
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q7
easy
asked
Feb 25, 2014
by
thanvigandhi_1
1
answer
A laser is a coherent source because it contains:
jeemain
aipmt
physics
cbse
class12
ch8
electromagnetic-waves
q5
easy
asked
Feb 25, 2014
by
thanvigandhi_1
1
answer
Page:
« prev
1
2
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...