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 magnifying power of a convex lens of focal lendth 10 cm is

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7

9.6

11

3.5

The ratio of size of image and size of object is

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Focal length

Magnification

Resolving power

Principle focus

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

The Detector in Photo phone is made up of.

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Cadmium

Germanium

Selenium

Silicon

The first person who attempted to measure the speed of light was.

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Michelson

Hygen's

Galileo

Ability

If the object is at 5 cm from the lens of simple microscope than its magnifying power will be.

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5

10

15

25

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

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 location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

Using a graded Index fibre, the time difference is reduced to about.

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1 ns per km

33 ns per 100 km

33 ns per km

1 ns per 100 km

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

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

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Jacket

Plastic

Cladding

Rubber

The types of optical fibres are

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Three

Four

Five

Six

the final image obtained by astronomical telescope is.

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Erect

Virtual

Magnified

All of these

The minimum distance from eye at which an object appears to be distinct is

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Near point

Focal length

Image distance from lens

Object distance from lens

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Physics Fsc Part 1 Chapter 10 Online Test MCQs With Answers

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