CBSE Class X – Science Physics Exam (Full Syllabus)

This test is designed based on NCERT Syllabus for Class 10 Topics of Science – Physics

Each time random 25 questions will be displaced from the question bank of 500 + Questions
So we recommend you to retake the quiz till you have mastered all the questions

1 / 25

An electron moves with a speed v along positive direction of the x-axis. If a magnetic feld B acts along the positive y-direction, then the force on the electron will act along:

x-axis

y-axis

–ve z-direction

+ve z-direction

2 / 25

A soft iron bar is introduced inside the current carrying solenoid. The magnetic field inside the solenoid:

will decrease

will remains same

will increase

will become zero

3 / 25

The current which is created due to the relative motion of coil or magnet

induced electric power

induced electric current

induced electric resistance

none

4 / 25

The change in magnetic feld lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.

Electromagnetic induction

Electromagnetic conduction

Electromagnetic repulsion

Electromagnetism

5 / 25

Which of the following is not attracted by a magnet:

Steel

cobalt

nickel

brass

6 / 25

The magnetic feld inside a long straight solenoid carrying current is

zero

same at all points

uneven

none of these

7 / 25

Two magnetic feld lines never intersect because the resultant force on a north pole at any point can only be in

uni direction

bidirection

multidirection

none

8 / 25

You are holding the current-carrying wire in your right hand so that your thumb points in the direction of current, then the direction in which your fingers encircle the wire will give the direction of the magnetic feld lines around the wire.explain

Maxwell’s left hand thumb rule

Maxwell’s right hand thumb rule

fleming right hand rule

fleming left hand rule

9 / 25

The values of mA and µA are:

10^-6 and 10^-9 A respectively

10^-3 and 10^-6 A respectively

10^-3 and 10^-9 A respectively

10^-6 and 10^-3 A respectively

10 / 25

Ohm’s law express that:

Resistance increases as current increases

Resistance decreases as current increases

Resistance increases as voltage increases

Current increases as voltage increases

11 / 25

The formula which states the relation between potential diference, current and resistance

V = I R

I=VR

R=VI

all of these

12 / 25

The ammeter is always connected in series because

to measure the current fowing through a circuit.

to measure the voltage fowing through a circuit.

to measure the potential difference fowing through a circuit.

to measure the resistance fowing through a circuit.

13 / 25

S.I unit of resistance

ohm

mho

ohm metre

none

14 / 25

The unit of electric power may also be expressed as

volt-ampere

kilowatt-hour

watt-second

joule second

15 / 25

The maximum resistance which can be made using four resistors each of 2 Ohm

6 ohm

8 Ohm

2 ohm

10 ohm

16 / 25

The instrument used for measuring electric current is

Ammeter

voltmeter

galvanometer

potentiometer

17 / 25

The device used for detecting and indicating an electric current.

Ammeter

voltmeter

galvanometer

potentiometer

18 / 25

The sun appears red at sunset or sunrise. Choose the incorrect statement from the following

Light from the sun near the horizon passes through the layers of air.

Light from the sun near the horizon travels larger distance in the earth’s atmosphere before reaching our eyes. (c)

Most of the blue light and longer wavelengths are scattered away by the particles.

Most of the blue light and shorter wavelengths are scattered away by the

19 / 25

Power of a lens is the measure of the degree of

divergence of light ray

convergence of light ray

convergence or divergence of light ray.

none

20 / 25

Ankit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed and several observations can be explained on the basis of this phenomenon,name the phenomeoneon

Atmospheric refraction

Atmospheric reflection

Atmospheric dispersion

none

21 / 25

When a fine beam of sunlight enters a smoke filled room, smoke particles become visible due to scattering of light by these particles

Tyndall effect

Dispersion of light

Scattering of light

Reflection of light

22 / 25

When sunlight passes through a canopy of a dense forest, tiny water droplets in the water scatter light.This is an example of

Tyndall effect

Dispersion of light

Scattering of light

Rrefraction of light

23 / 25

The defect in a person can see nearby objects but not far away objects

Far-sightedness

Myopia

Astigmatism

none

24 / 25

The refractive index of glass is least for

violet color

red color

blue color

white color

25 / 25

The refractive index of glass is largest for

violet color

red color

blue color

white color

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CBSE Class X – Science Physics Exam (Full Syllabus)

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