A glass sphere $(μ = 1.5)$ of radius 8 cm is placed in sunlight. Where is the image of the sun formed by the light passing through the sphere? When refraction by first surface of sphere
Answer & explanation
Correct answer: option 1
As the sun is very far away, the incident ray can be assumed as coming from infinity.
For refraction at first surface:
Using $\frac{m_1}{u}+\frac{m_2}{v}=\frac{m_2-m_1}{R}$
$⇒\frac{1}{∞}+\frac{1.5}{v_1}=\frac{1.5-1}{+8}$
$⇒v_1=24cm$