Electromagnetic Waves · Physics · NEET

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MCQ (Single Correct Answer)

NEET 2023
In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of $$2.0 \times 10^{10} ...
NEET 2022 Phase 2
The magnetic field of a plane electromagnetic wave is given by $$\overrightarrow B = 3 \times {10^{ - 8}}\cos (1.6 \times {10^3}x + 48 \times {10^{10...
NEET 2022 Phase 2
The ratio of the magnitude of the magnetic field and electric field intensity of a plane electromagnetic wave in free space of permeability $${\mu _0}...
NEET 2022 Phase 1
Match List - I with List - II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-fa...
NEET 2022 Phase 1
When light propagates through a material medium of relative permittivity $$\varepsilon $$r and relative permeability $$\mu$$r, the velocity of light, ...
NEET 2021
For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric...
NEET 2020 Phase 1
The ratio of contributions made by the electric field and magnetic field components to the intensity of and electromagnetic wave is : (c = speed of el...
NEET 2019
Which colour of the light has the longest wavelength?
NEET 2018
An EM wave is propagating in a medium with a velocity $$\overrightarrow v = v\widehat i$$. The instantaneous oscillating electric field of this em wa...
NEET 2017
In an electromagnetic wave in free space that root mean square value of the electric field is Erms = 6 V m$$-$$1. The peak value of the magnetic field...
NEET 2016 Phase 1
Out of the following options which one can be used to produce a propagating electromagnetic wave ?
AIPMT 2015
The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong ?
AIPMT 2015 Cancelled Paper
A radiation of energy 'E' falls normally on a perfectly reflecting surface. The momentum transferred to the surface is (C = Velocity of light)
AIPMT 2014
Light with an energy flux of 25 $$ \times $$ 104 W m$$-$$2 falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm2,...
NEET 2013 (Karnataka)
An electromagnetic wave of frequency $$\upsilon = 3.0$$ MHz passes from vaccum into a dielectric medium with relative permittivity $${{\varepsilon _r...
NEET 2013
The condition under which a microwave oven heats up a food item containing water molecules most efficiently is
AIPMT 2012 Mains
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagatting in vacuum is equal to
AIPMT 2012 Prelims
The electric field associated with an em wave in vacuum is given by E = $$\widehat i$$ 40 cos (kz $$-$$ 6 $$ \times $$ 108 t) where E, z and t are in...
AIPMT 2011 Prelims
The electric and the magnetic field, associated with an e.m. wave, propagating along the +z-axis, can be represented by
AIPMT 2011 Prelims
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is
AIPMT 2010 Mains
The electric field of an electromagnetic wave in free space is given by $$\overrightarrow E = 10\cos ({10^7}t + kx)\widehat j\,\,V/m,$$ where t and x...
AIPMT 2010 Prelims
Which of the following statement is false for the properties of electromagnetic waves ?
AIPMT 2009
The electric field part of an electromagnetic wave in a medium is represented by Ex = 0; $${E_y} = 2.5{N \over C}\cos \left[ {\left( {2\pi \times {{1...
AIPMT 2008
The velocity of electromagnetic radiation in a medium of permittivity $$\varepsilon $$0 and permeability $$\mu $$0 is given by
AIPMT 2007
The electric and magnetic field of an electromagnetic wave are
AIPMT 2005
If $$\lambda $$v, $$\lambda $$x and $$\lambda $$m represent the wavelengths of visible light, X-rays and microwaves respectively, then ...
AIPMT 2003
Which of the following rays are not electromagnetic waves ?
AIPMT 2003
We consider the radiation emitted by the human body. Which one of the following statements is true?
AIPMT 2002
The velocity of electromagnetic wave is parallel to
AIPMT 2002
What is the cause of Green house effect ?
AIPMT 2001
Biological inportance of ozone layer is
AIPMT 2000
The frequency order for $$\gamma $$-rays (a), X-rays (b), UV rays (c) is
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