Question # 1

An object is placed 6 cm away in front of a concave mirror that has 10 cm focal length. Determine the location of the image:

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-5 cm

-10 cm

-15 cm

-20 cm

CD which is made of soft material is called:

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Hard disk

Floppy disk

Iron disk

Copper disk

Half of radius of curvature is called:

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Focal length

Principal focus

Axis

None of these

Totally reflecting prism is used in:

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periscope

binoculars

periscope and binocular

telescope

Which form of energy is sound:

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Electrical

mechanical

Thermal

Chemical

Totally reflecting prism turns the incident ray at an angle of:

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90^o

60^o

75^o

45^o

Image formed on a camera is:

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real,invertred, and diminished

virtual, upright and diminshed

virtual, upright and magnified

real, inverted and magnified

The mirror whose inner surface is reflecting is called:

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Concave mirror

Convex mirror

Miroor

Lens

Magnification of mirror is given by:

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m=p/q

m=q/p

m=pxq

m=1/p+q

When light passes through a prism it deviates from its original path due to:

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Reflection

Diffraction

Interference

Refraction

The totally reflectiing prism one angle is of:

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45^o

90^o

180^o

120^o

A data storage device is:

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Printer

Hard disk

Monitor

CPU

Optical fibre are:

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Cheap

Flexible

Lighter

All of these

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Physics 10th Class English Medium Unit 3 Online Test MCQs With Answers

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