Question Text
Question 1 :
According to Maxwell's hypothesis, a changing electric field gives rise to
Question 2 :
Which of the following has/have zero average value in a plane electromagnetic wave?
Question 4 :
A plane electromagnetic wave of wavelength $\lambda$ has an intensity $I$. It is propagating along the positive $Y-direction$. The allowed expressions for the electric and magnetic fields are given by
Question 5 :
The frequency of electromagnetic wave in free space is $2$ MHz. When it passes through a region of relative permittivity $\varepsilon_r=4.0$, then its wave length __________ & frequency ______________.
Question 6 :
Maxwell's corrections to Ampere's law was required when the later was extended to:<br>
Question 7 :
Assertion: When variable frequency AC source is connected to a capacitor, displacement current increases with increase in frequency
Reason: As frequency increases conduction current also increases
Question 10 :
An electromagnetic radiation has an energy of 13.2 keV. Then the radiation belongs to the region of
Question 12 :
Which wave characteristic describes the product of the frequency and the wavelength?
Question 13 :
<span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-justify">Thefrequency of incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is<br></p>
Question 14 :
A metal block is exposed to beams of X-ray of different wavelength. X-rays of which wavelength penetrate most?