Question

A sunshine recorder globe of 30 cm diameter is made of glass of refractive index is 1.5 . A ray enters the globe parallel to the axis . Find the position from the centre of the sphere where the ray crosses the axis

Answer 1

Answer:

the position from the centre of the sphere where the ray crosses the axis

$d_i = \frac{n_2 R}{n_2 - n_1}$

Explanation:

As per formula of ray optics we have

$\frac{n_2}{d_i} - \frac{n_1}{d_o} = \frac{n_2 - n_1}{R}$

here we have

$n_1 = 1$

so we have

$\frac{n_2}{d_i} = \frac{n_2 - n_1}{R}$

$d_i = \frac{n_2 R}{n_2 - n_1}$

so the light will converge on the axis at above distance from the surface where it will strike the globe

#Learn

Topic : refraction of light

https://brainly.in/question/13152422

Answer 2

Answer: 22.5cm

Explanation: