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

Fleming’s Right-hand rule gives:

magnitude of the induced current.

magnitude of the magnetic field

direction of the induced current

both, direction and magnitude of the induced current

2 / 25

For a current in a long straight solenoid N and S-poles are created at the two ends. Among the subsequent declaration , the incorrect declaration is:

The feld lines inside the solenoid are in the form of straight lines, which indicates that the magnetic field is the same at all points inside the solenoid

The strong magnetic feld produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil

The pattern of the magnetic feld associated with the solenoid is diferent from the pattern of the magnetic field around a bar magnet

The N and S-poles exchange position when the direction of current through the solenoid is reversed

3 / 25

Which of the subsequent is not attracted by a magnet:

Steel

Cobalt

Brass

Nickel

4 / 25

Magnetic effect of current was identified by:

Oersted

Faraday

Bohr

Ampere

5 / 25

Example of permanent magnet is

solenoid wounded across a nail and connected to a battery

Bar Magnet

Both 1 & 2

none

6 / 25

A coil of many circular turns of wire wrapped in the shape of a cylinder

Bar magnet

solenoid

horse shoe magnet

none

7 / 25

The deflection of the galvanometer becomes zero the moment the motion of

magnet stops.

magnet starts

magnet remains constant

none of these

8 / 25

When a strong bar magnet is pushed into a coil of insulated copper wire connected to a galvanometer, we will observe a deflection in the galvanometer in

unidirection

bidirection

multidirection

none

9 / 25

Electrical resistivity of a given metallic wire depends upon:

Its length

Its thickness

Its shape

Nature of the material Explanation:

10 / 25

A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is:

2 A

4 A

8 A

16 A

11 / 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

12 / 25

Insulators consists of:

No resistance

High resistance

Small resistance

Variable resistance

13 / 25

The condition for the credibility of Ohm’s law is that the

Temperature should remain constant

Current should be proportional to voltage

Resistance must be wire wound type

All of the above

14 / 25

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

electrical inductivity

electrical resistivity

none

15 / 25

S.I unit of resistance

ohm

mho

ohm metre

none

16 / 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

17 / 25

The instrument used for measuring electric current is

Ammeter

voltmeter

galvanometer

potentiometer

18 / 25

At noon, the Sun looks white as:

light is least scattered

all the colours of the white light are scattered away

blue colour is scattered the most

red colour is scattered the most

19 / 25

A clear sky appears blue, because:

blue light gets absorbed in the atmosphere

ultraviolet radiations are absorbed in the atmosphere

violet and blue lights get scattered more than the lights of all other colours by the atmosphere

lights of all other colours is scattered more than the violet and blue colour lights by the atmosphere

20 / 25

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light:

is scattered the most by smoke or fog

is scattered the least by smoke or fog

is absorbed the most by smoke or fog

moves the fastest in air

21 / 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

22 / 25

Arjun 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 ,Name two observations which can be explained by the above phenomenon.

Rainbow formation,Tyndall effect

Twinkling of stars, advance sunrise, delayed sunset

both 1 &2

none

23 / 25

Light which consists of only one colour or single wavelength is called Monochromatic

Single chromatic

Dichromatic

Monochromatic

none

24 / 25

Lenses which have both concave and convex structure.

Bifocal lenses

Concave lenses

Difocal lenses

Convex lenses

25 / 25

The colour of scattered light depends on the

size of the scattering particle

frequency of the scattering particle

distanceof the scattering particle

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CBSE Class X – Science Physics Exam (Full Syllabus)

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