A person lives in a high-rise building at a h | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) When the reflected light is least intense,it means the light is polarized at the Brewster's angle $(i_p)$.According to Brewster's law,$	an i_p =

Vedclass · Accepted Answer

$120$

Vedclass · Answer

(A) When the reflected light is least intense,it means the light is polarized at the Brewster's angle $(i_p)$.According to Brewster's law,$	an i_p = \mu = \frac{4}{3}$.Let $d_1$ be the horizontal distance from the observer to the point of reflection on the river surface,and $d_2$ be the horizontal distance from the point of reflection to the tower.From the geometry of the reflection:$	an i_p = \frac{d_1}{30} = \frac{d_2}{60}$.Given $	an i_p = \frac{4}{3}$,we have:$\frac{d_1}{30} = \frac{4}{3} \Rightarrow d_1 = 40 \ m$.$\frac{d_2}{60} = \frac{4}{3} \Rightarrow d_2 = 80 \ m$.The total width of the river is $d = d_1 + d_2 = 40 + 80 = 120 \ m$.

Similar Questions

The angle of polarisation for a medium with respect to air is $60^{\circ}$. The critical angle of this medium with respect to air is

Select the correct statement.

The critical angle of a certain medium is $\sin^{-1}\left(\frac{3}{5}\right)$. The polarizing angle of the medium is

$A$ ray of light is incident at a polarising angle such that its deviation is $24^{\circ}$. Then the angle of incidence is: (in $^{\circ}$)

When a light ray is incident on the surface of a medium,the reflected ray is completely polarized. Then the angle between the reflected and refracted rays is (in $^{\circ}$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module