Question # 1

A converging mirror with a radius of 20cm creates a real image 30 cm from the mirror. What is the object distance:

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5.0 cm

7.5 cm

15 cm

20 cm

In medical field, C.R.O is used to display:

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Heart beats

Pictures of organs

Pictures of bones

Blood pressure

The current used in houses is:

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A.C.

Conventiona current

Current

D.C

We can distinguish between the notes of a piano and flute due to ………… of sound.

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Loudness

Pitch

Quality

Intensity

Which type of image is formed by a convex lens on a screen:

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Inverted and real

Inverted and virtual

Upright and real

Upright and virtual

What should household appliances be connected in parallel with the voltage source?

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to increase the resistance of the circuit

to decrease the resistance of the circuit

to provide each appliance the same voltage as the power source

to provide each appliance the same current as the power source

The resistance of conductors is due to:

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Protons

Fixed atoms

Molecules

Neutrons

LDR can act as:

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Diode

Switch

Transistor

Rectifier

Resistance of conductor is directly proportional to:

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Length

Pressure

Area

All of these

How Galvanometer is connected in circuit to detect current?

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In Series

In Parallel

Fixed

Variable

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

An electric current in conductors is due to the flow of:

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Positive ions

Negtive ions

Positive charge

free electron

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10th Class Physics Chapter 14 Current Electricity English Medium KPK Boards Online Mcqs MCQs With Answers

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