Question # 1

In Michelson's experiment the relation used to find the speed of light is

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16 fc

1/16 fd

16 fd

16/fd

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

The accepted value for speed of light in vacuum

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2.99 x 10⁸m - sec^-1

2.99 x 10⁶m - sec^-1

2.99 x 10⁸km - sec^-1

2.99 x 10⁸m - h^-1

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.

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Short size

Long focal length

Large size

Short focal length

A convex lens acts as diverging lens if the object is placed at

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F

2F

Between F and 2 F

Within the F

For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively.

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10 cm

20 cm

5 cm

120 cm

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

The focal length of a concave lens is always

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+ve

-ve

Zero

None of these

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

Which is not the essential component of a spectrometer.

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Collimator

Telescope

Turntable

Microscope

A layer over the central core of the jacke is called.

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Jacket

Plastic

Cladding

Rubber

In an object is placed in between focus point and Opticla center of a convex lens, the image formed by lens is.

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Real inverted

Virtual diminshed

Virtual inverted

Virtual erected

The magnification of a convex lens of focal length 5 cm is equal to.

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5

6

10

23

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

The focal length of convex lens

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Negative

Positive

small

Large

A double convex lens acts as diverging lens when the object is

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At infinity

Inside the focus

A way from focus

A a large distance from lens

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Physics Fsc Part 1 Chapter 10 Online Test MCQs With Answers

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