MCQ
The angle of incidence at which reflected light is totally polarized for reflection from air to glass (refraction index $n$) is
  • A
    ${\sin ^{ - 1}}(n)$
  • B
    ${\sin ^{ - 1}}\left( {\frac{1}{n}} \right)$
  • C
    ${\tan ^{ - 1}}\left( {\frac{1}{n}} \right)$
  • ${\tan ^{ - 1}}(n)$

Answer

Correct option: D.
${\tan ^{ - 1}}(n)$
d
$\mu = tan$ $\theta$$_P$ ==> $\theta$$_P$ $ = tan^{-1} n$

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

If an electron in hydrogen atom jumps from third orbit to second orbit, the frequency of the emitted radiation is given by ( $c$ is speed of light)
Two identical point charges are placed at a separation of $d$. $P$ is a point on the line joining the charges, at a distance $x$ from any one charge. The field at $P$ is $E$, $E$ is plotted against $x$ for values of $x$ from close to zero to slightly less than $d$. Which of the following represents the resulting curve
Select the incorrect statement about ideal gas.
The slits in a double-slit interference experiment are illuminated by orange light $(\lambda  = 600\  nm)$. A thin transparent plastic of thickness $t$ is placed in front of one of the slits. The number of fringes $(N)$ shifting on screen is plotted versus the refractive index $μ$ of the plastic in graph shown. The value of $t$ is
The waves used in telecommunication are
At room temperature, the $r.m.s.$ speed of the molecules of certain diatomic gas is found to be $1920\, m/s$. The gas is
Match List$-I$ with List$-II$.

List$-I$ List$-II$
$(a)$ ${R}_{{H}}$ (Rydberg constant) $(i)$ ${kg} {m}^{-1} {s}^{-1}$
$(b)$ $h$ (Planck's constant) $(ii)$ ${kg} {m}^{2} {s}^{-1}$
$(c)$ $\mu_{{B}}$ (Magnetic field energy density) $(iii)$ ${m}^{-1}$
$(d)$ $\eta$ (coefficient of viscocity) $(iv)$ ${kg} {m}^{-1} {s}^{-2}$

Choose the most appropriate answer from the options given below:

A thin wire of length $L$ and uniform linear mass density $\rho$ is bent into a circular loop with centre at $O$ as shown.  The moment of inertia of the loop about the axis $XX' $ is 
Certain neutron stars are believed to be rotating at about $1\,rev/\sec $. If such a star has a radius of $ 20\, km$, the acceleration of an object on the equator of the star will be
A capacitor is connected to a $20\, {V}$ battery through a resistance of $10\, \Omega .$ It is found that the potential difference across the capacitor rises to $2\, {V}$ in $1\, \mu {s}$. The capacitance of the capacitor is $....\,\mu {F}$ Given : $\ln \left(\frac{10}{9}\right)=0.105$