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

The magnetic field lines:

intersect at right angles to one another

interest at an angle 45° to each another

do not cross one another

cross at an angle of 60° to one another

2 / 25

By which instrument, the presence of magnetic field be resolved?

Magnetic Needle

Ammeter

Galvanometer

Voltmeter

3 / 25

The strength of each of magnet reduces to half when it cut along its length into the equal parts magnetic field strength of a solenoid. Polarity of solenoid can be determined by:

use of compass needle

Right hand thumb rule

fleming left hand rule

either (a) or (b)

4 / 25

Direction of rotation of a coil in electric motor is intent by:

fleming’s right hand rule

fleming’s left hand rule

faraday law of electromagnetic inductors

None of these

5 / 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

6 / 25

Which of the following is not attracted by a magnet:

Steel

cobalt

nickel

brass

7 / 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

8 / 25

The law states that if the forefinger indicates the direction of the magnetic field and thumb shows the direction of motion of conductor, then the middle finger will show the direction of induced current

fleming left hand rule

Fleming right hand rule

ohms law

none

9 / 25

The resistance of hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamp, when not in use?

48 Ω

400 Ω

484 Ω

48.4 Ω

10 / 25

Insulators consists of:

No resistance

High resistance

Small resistance

Variable resistance

11 / 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

12 / 25

Copper is not approved to make fuse wire because it:

is a good conductor of electricity

has a low melting point

has a high melting point

is not easily available

13 / 25

The electrical resistance of a conductor having cross-sectional area 1 m² and length 1m

electrical inductivity

electrical resistivity

none

14 / 25

S.I unit of resistivity

ohm

mho

ohm metre

none

15 / 25

The rate at which electrical work is done or the rate at which electrical energy is consumed

Electrical power

electrical inductivity

electrical resistivity

none

16 / 25

The unit of electric power may also be expressed as

volt-ampere

kilowatt-hour

watt-second

joule second

17 / 25

An ideal ammeter is one which has

infinite resistance

zero resistance

finite resistance

no resistance

18 / 25

In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray

is parallel to the incident ray.

is along the same direction of incident ray

gets deviated and bends towards the thinner part of the prism.

gets deviated and bends towards the thicker part (base) of the prism.

19 / 25

The red colour of the sun at the time of sunrise and sunset is because:

red colour is least scattered

blue colour is least scattered

red colour is most scattered

blue colour is most scattered

20 / 25

Why don’t planets twinkle?

Intensity of light entering our eye is infinity

Intensity of light entering our eye is one.

Intensity of light entering our eye is zero.

Intensity of light entering our eye is two.

21 / 25

Power of a lens is

1/f

1/T

1/fT

none

22 / 25

The splitting of light into its component colours is called

Dispersion of light

Scattering of light

Refraction of light

Reflection of light

23 / 25

The defect the eye cannot focus objects both horizontally and vertically at the same time

Far – sightedness

Myopia

Astigmatism

none

24 / 25

Myopia can be corrected by using

convex lens

concave lenses

both concave and convex

none

25 / 25

A concave lens of short focal length has greater

Converging power than concave lens of long focal length

diverging power than convex lens of long focal length

diverging power than concave lens of long focal length

converging power than convex lens of long focal length

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CBSE Class X – Science Physics Exam (Full Syllabus)

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