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 subsequent is not attracted by a magnet:

Steel

Cobalt

Brass

Nickel

3 / 25

Magnetic effect of current was identified by:

Oersted

Faraday

Bohr

Ampere

4 / 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

5 / 25

When current is parallel to magnetic field, then force experience by the current carrying conductor placed in uniform magnetic field is

Twice to that when angle is 60°

Thrice to that when angle is 60°

zero

infinite

6 / 25

In electric motor, to make the coil rotating constantly in the identical direction, current is reversed in the coil after every half rotation by a device called:

carbon brush

commutator

slip ring

armature

7 / 25

The magnetic feld inside a long straight solenoid carrying current is

zero

same at all points

uneven

none of these

8 / 25

The phenomenon discovered by Faraday.

electromagnetic induction

Electromagnetic conduction

Electromagnetic repulsion

Electromagnetism

9 / 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

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

To get 2 Ω resistance using only 6 Ω resistors, the number of them required is

2

3

4

6

12 / 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

13 / 25

A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is:

2.5 A

5.0 A

7.5 A

10:00 AM

14 / 25

Insulators consists of:

No resistance

High resistance

Small resistance

Variable resistance

15 / 25

True test of charge is

Attraction only

Repulsion only

Both attraction and repulsion

None of the above

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

S.I unit of resistivity

ohm

mho

ohm metre

none

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

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

20 / 25

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

Single chromatic

Dichromatic

Monochromatic

none

21 / 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

22 / 25

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

Far-sightedness

Myopia

Astigmatism

none

23 / 25

Myopia can be corrected by using

convex lens

concave lenses

both concave and convex

none

24 / 25

The emergent ray in a prism bend at an angle to the direction of the

incident ray

refracting ray

reflecting ray

none

25 / 25

The refractive index of glass is least 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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