Question # 1

When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90° is called:

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Angle of incidence

Critical angle

Angle of refraction

Angle of deviation

Which instrument is used to measure current, resistance and potential difference:

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Galvanometer

Digital meter

Voltmeter

Ammeter

Analogue quantity is:

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Time

Pressure

Distance

All of these

The symbol of AND operation is:

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+

-

.

*

Which is not a hardware:

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CPU

Window

Keyboard

Mouse

High pitch means:

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High wavelength

High frequency

High time period

High energy

Magnification of mirror is given by:

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m=p/q

m=q/p

m=pxq

m=1/p+q

Old people cannot hear sound above than:

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1000 Hz

15000 Hz

20000 Hz

If one of the resistors in a parallel circuit is removed, the total resistance will be:

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Doubled

Decreased

Increased

Remain same

The ray of the light after reflection from concave mirror passes through:

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Centre

Principal focus

Pole

None of these

In C.R.O grid is always connected with potential:

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Negative

Positive

High positive

Zero positive

How does sound travel from its source to your ear?

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Byc changes in air pressure

By vibration in wires or strings

By electromagnetic waves

By infrared waves

Public address system is the example of :

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Analogue electronics

Digital electonics

Binary system

None of these

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10th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

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