MCQ
A light has amplitude $A$ and angle between analyser and polariser is $60^\circ $. Light is reflected by analyser has amplitude
  • A
    $\mathrm{A}^{\sqrt{2}}$
  • B
    $\mathrm{Al}^{\sqrt{2}}$
  • C
    ${ }^{\sqrt{3}} \frac{~A}{2}$
  • $\frac{A}{2}$

Answer

Correct option: D.
$\frac{A}{2}$
$\frac{A}{2}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A constant current of 2.8A exists in a resistor. The rms current is:
The phenomenon of radioactivity is(a) Exothermic change which increases or decreases with temperature(b) Increases on applied pressure(c) Nuclear process does not depend on external factors (d) None of the above
 
 
 
 
Three infinitely long charge sheets are placed as shown in figure. The electric field at point $P$ is
A P-type semiconductor has acceptor levels $57\ meV$ above the valence band. The maximum wavelength of light required to create a hole is $($Planck’s constant $h = 6.6 \times 10^{-34} J-s)$
An electron is moving along the positive X-axis. You want to apply a magnetic field for a short time so that the electron may reverse its direction and move parallel to the negative X-axis. This can be done by applying the magnetic field along(a) Y-axis(b) X-axis(c) Y-axis only(d) None of these
       
In ${ }_0^1 n \rightarrow{ }_1^1 H +{ }_{-1}^0 \beta$ symbol ${ }_1^1 H$ represents :
Curies law can be written as
The state of the energy gained by valance electrons when the temperature is raised or when electric field is applied is called as(a) Valance band(b) Conduction band(c) Forbidden band(d) None of these
       
Lenz's law is consequence of the law of conservation of(a) Charge(b) Momentum(c) Mass (d) Energy
       
In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The moderator used have light nuclei. Heavy nuclei will not serve the purpose because: