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

Which of the following declaration is not correct about the magnetic field?

Magnetic field lines form a continuous closed curve

Magnetic field line do not interest each other

Direction of tangent at any point on the magnetic field line curve gives the direction of magnetic field at that point.

Outside the magnet, magnetic field lines go from South to North pole of the magnet.

3 / 25

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

Magnetic Needle

Ammeter

Galvanometer

Voltmeter

4 / 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)

5 / 25

Which of the following component influence the strength of force experience by a current carrying conduct in a uniform magnetic field?

magnetic field strength

magnitude of current in a conductor

length of the conductor within magnetic field

All of above

6 / 25

A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference:

more in (ii) than in (i) case

same in both

can’t say

7 / 25

A D.C generator works on the theory of:

ohnis law

Joule’s law of heating

faraday’s law of electromagnetic induction.

none of the above

8 / 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

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

The instrument used for measuring electric current is:

galvanometer

ammeter

voltmeter

potentiometer

11 / 25

A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is:

2 × 10³ joule

2 × 10⁵joule

2 × 10⁴ joule

2 × 10² joule

12 / 25

Two resistors are connected in series gives an equivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Then the individual resistance are

each of 5 Ω

6 Ω and 4 Ω

7 Ω and 4 Ω

8 Ω and 2 Ω

13 / 25

The resistivity does not change if:

the material is changed

the temperature is changed

the shape of the resistor is changed

both material and temperature are changed

14 / 25

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

V = I R

I=VR

R=VI

all of these

15 / 25

The property of a conductor to oppose the flow of charges through it.

Resistance

Reluctance

Conductance

inductance

16 / 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.

17 / 25

At the time of short circuit, the electric current in the circuit

vary continuously

does not change

reduces substantially

increases heavily

18 / 25

The bluish colour of water in deep sea is due to:

the presence of algae and other plants found in water

refection of the sky in water

scattering of light

absorption of light by the sea

19 / 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

20 / 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

21 / 25

Arpit 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 ,What is the total time diference on duration of day on earth?

4 minutes

6minutes

8minutes

10minutes

22 / 25

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

Single chromatic

Dichromatic

Monochromatic

none

23 / 25

The density of the atmosphere, as we know goes on decreasing as the distance above the sea level increases,this phenomeneon is called

Atmospheric refraction

Refraction of light

Atmospheric Reflection

None

24 / 25

Astigmatism can be corrected

convex lens

concave lenses

cyclindrical lens

bifocal lens

25 / 25

The SI unit of Power of a lens is

Hertz

Dipotre

newton

none

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CBSE Class X – Science Physics Exam (Full Syllabus)

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