Question # 1

The diameter of a lens is called

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Focal length

Aperture

Principle axis

Centre

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

The least distance of distinct vision for the normal eye is.

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15 cm

25 cm

125 cm

25 m

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

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

The speed of light was measured correctly by

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Galileo

Michelson

Newton

Maxwell

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

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7

9.6

11

3.5

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

The Detector in Photo phone is made up of.

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Cadmium

Germanium

Selenium

Silicon

If focal length of objective and eye piece is 0.5 m and 10 cm respectively then magnifying power of telescope will be.

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0.5

5

10

20

The magnifying power is also called

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Resolving power

Angular magnification

Strength of eye

None of these

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

The light signal in Opticla fiber must be regenerated by advice called.

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Regenerator

Generator

Repeater

Diode

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

The final image seen through ey piece in telescope is.

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Real, enlarge and inverted

Vertual, enlarge and erect

Virtual, enlarge and inverted

In Real, enlarge and erect

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

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

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Michelson

Hygen's

Galileo

Ability

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Physics Fsc Part 1 Chapter 10 Online Test MCQs With Answers

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