A ray of sunlight enters a spherical water dr | vedclass

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

Question

(C) $1$. Applying Snell's law at the first surface (air to water): $1 	imes \sin 53^o = (4/3) 	imes \sin r$. $2$. Given $\sin 53^o = 0.8 = 4/5$,we h

Vedclass · Accepted Answer

$138$

Vedclass · Answer

(C) $1$. Applying Snell's law at the first surface (air to water): $1 	imes \sin 53^o = (4/3) 	imes \sin r$. $2$. Given $\sin 53^o = 0.8 = 4/5$,we have $(4/5) = (4/3) \sin r$,which gives $\sin r = 3/5 = 0.6$,so $r = 37^o$. $3$. The deviation at the first refraction is $\delta_1 = i - r = 53^o - 37^o = 16^o$ (clockwise). $4$. At the back surface,the ray is reflected. The angle of incidence is $r = 37^o$,and the angle of reflection is also $37^o$. The deviation at reflection is $\delta_2 = 180^o - 2r = 180^o - 2(37^o) = 180^o - 74^o = 106^o$ (clockwise). $5$. At the second refraction (water to air),the angle of incidence is $r = 37^o$,and the angle of emergence is $i = 53^o$. The deviation is $\delta_3 = i - r = 53^o - 37^o = 16^o$ (clockwise). $6$. The total deviation is $\delta_{net} = \delta_1 + \delta_2 + \delta_3 = 16^o + 106^o + 16^o = 138^o$.

Similar Questions

$A$ camera objective has an aperture diameter $d.$ If the aperture is reduced to diameter $d/2,$ the exposure time under identical conditions of light should be made

$A$ light source is located at $P_1$ as shown in the figure. All sides of the polygon are equal. The intensity of illumination at $P_2$ is $I_0$. What will be the intensity of illumination at $P_3$?

$A$ ray of light strikes a plane mirror $M$ at an angle of $45^{\circ}$ as shown in the figure. After reflection,the ray passes through a prism of refractive index $1.5$ whose apex angle is $4^{\circ}$. The total angle through which the ray is deviated is......$^{\circ}$

In the figure shown,a point object $O$ is placed in air on the principal axis. The radius of curvature of the spherical surface is $60\, cm$. Let $I_f$ be the final image formed after all the refractions and reflections. Which of the following statements is correct?

Which has more luminous efficiency?

Vedclass Test Series

Exam Paper Generator

Online Exam Module