TS EAMCET · Physics · Wave Optics
A point source is located at a distance of from the front surface of a symmetrical glass biconvex lens with equal radii of curvature The distance at which image formed from the rear surface of this lens is [Given refractive index of the glass is ]
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
From lens makers formula for biconvex lens, we have 1f=μ-12R ⇒1f=1.5-125=15 From Lens equation, we have 1v-1u=1f ⇒1v-1-20=15 ⇒1v=15-120=320 ⇒v=203 cm
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