Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 18

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A wire mesh consisting of very small squares is viewed at a distance of $8 cm$ through a magnifying converging lens of focal length $10 cm$ , kept close to the eye. The magnification produced by the lens is

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Important Questions on Ray Optics

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 19

The layered lens as shown is made of two types of transparent materials-one indicated by horizontal lines and the other by vertical lines. The number of images formed of an object will be

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 20

The image formed by a concave mirror is

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 21

When a glass prism of refracting angle

60 °

is immersed in a liquid, its angle of minimum deviation is

30 °

. The critical angle of glass with respect to the liquid medium is

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 22

The refractive index for the light of violet and red colour of any material are

1.66

and

1.64

respectively. If the angle of prism made of this material is

10 °

. Then angular dispersion is

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 23

The condition for an achromatic doublet is (here

f_{1}

and

f_{2}

are the focal length and

ω_{1} and ω_{2}

are dispersive powers of individual lenses.)

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 24

If one face of prism is silvered having prism angle

30 °

and

μ = \sqrt{2}

. What will be the angle of incidence, so that the incident ray retraces its path?

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 25

A convex lens has mean focal length of

20 cm

. The dispersive power of the material of the lens is

0.02

. The longitudinal chromatic aberration for an object at infinity is

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Comprehensive Guide to AP EAPCET Physics>Chapter 11 - Ray Optics>Exercise 1>Q 26

A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and the latter is equal to

\frac{3}{4} th

of angle of prism. The angle of deviation is