Question # 1

Totally reflecting prism is used in:

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periscope

binoculars

periscope and binocular

telescope

The focal length is related to radius of curvature by the formula:

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f = 2R

f = 4R

f = R/2

R = f/2

Which of the following is not processing:

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Arranging

Manipulating

Calculating

Gathering

The distance of spherical mirror is called:

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Curvature

Aperture

Sphere

a,b

CD which is made of soft material is called:

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Hard disk

Floppy disk

Iron disk

Copper disk

An object of placed at he centre of curvature of a concave mirror. The image produced by the mirror is located:

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out beyond the centre of curvature.

at the centre of curvature

between the centre of curvature and the focal point

at the focal point

Magnification of mirror is given by:

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m=p/q

m=q/p

m=pxq

m=1/p+q

Mathematical relationship between critical angle "C" and refractive index "n" is:

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N = C

N = 1 / sin c

N = 1 / cos c

N = 1 / sin2 c

Power of convex lens is 10 D. Its focal length is:

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100 m

10 m

1 m

0.1 m

Speed of light in air is ms^-1

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3 x 10⁸

3 x 10¹¹

3 x 10⁵

340

Hard disk is made of:

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Aluminium

Copper

Iron

Plastic

The mirror whose outer surface is reflecting is called:

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Concave mirror

Convex mirror

Lens

Mirror

____________ is always virtual in case of convex mirror.

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p

image

object

all of these

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