Ray Optics-Lens Maker's Formula and Lens Formula (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 2 of 2

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Question number: 1

» Ray Optics » Lens Maker's Formula and Lens Formula

Appeared in Year: 2010

MCQ▾

Question

A narrow parallel beam of light falls on a glass sphere of radius R and refractive index µ at normal incidence. The distance of the image from the outer edge is given by

Choices

Choice (4) Response

a.

R(2+μ)2(μ1)

b.

R(2+μ)2(μ+1)

c.

R(2μ)2(μ+1)

d.

R(2μ)2(μ1)

Question number: 2

» Ray Optics » Lens Maker's Formula and Lens Formula

MCQ▾

Question

The flat face of a Plano-convex lens of focal length 20 cm is silvered. A point source placed 50 cm in front of the curved surface will produced a –

Choices

Choice (4) Response

a.

Virtual image 12.5 cm away from the lens

b.

Real image 25 cm away from the lens

c.

Virtual image 25 cm away from the lens

d.

Real image 12.5 cm away from the lens

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