Question # 1

A converging lens becomes a magnifying glass when an object is placed:

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Outside of focal length

Inside the focal length

Equal of focal length

At double of focal length

A transformer has 100 turns in its primary and 500 turns in secondary coil. If 6 volts D.C is applied across its primary, the voltage induced across its secondary coil will be:

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0 volt

30 volts

45 volts

60 volts

The angle at which prism deviates the incident ray is called:

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Angle of incident

Angle of reflection

Angle of deviation

Angle of minimum deviation

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

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Negative

Positive

High positive

Zero positive

The cathode ray oscilloscope consists of main parts:

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Two

Three

Four

Five

Which device is used to increases / decreases A.C Voltage?

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Electric motor

Transformer

A.C Generator

Solenoid

The refracted light striking to the side of prism is called:

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Refracted ray

Incident ray

Reflected ray

Emergent ray

When we heat the metal at high temperature they emit:

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Holes

Protons

Neutrons

Electrons

George Boole invented:

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Boolean algebra

Arithmetic algebra

Mean algebra

Geometry

The standard group of bits in digital electronic is:

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5 bits

6 bits

7 bits

8 bits

What is the direction of the magnetic field lines inside a bar magnet?

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From north pole to south pole

From south pole to north pole

From side to side

There are no magnetic field lines.

The output of a NAND gate is 0 when:

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Both of its inputs are 0

Both of its inputs are 1

Any of its inputs is 0

Any of its inputs is 1

An object gains excess negative charge after being rubbed against another object, which is:

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Neutral

Negatively charged

Positively charged

Either, a, b or c

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Physics 10th Class English Medium Unit 6 Online Test MCQs With Answers

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