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

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

3 / 25

Magnetic effect of current was identified by:

Oersted

Faraday

Bohr

Ampere

4 / 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.

5 / 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

6 / 25

when an iron core is inserted into a current carrying solenoid

strength of the magnetic field produced inside the solenoid remains unchanged

strength of the magnetic field produced inside the solenoid decreases

strength of the magnetic field produced inside the solenoid increases

no effect

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

Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is

current

voltage

resistance

None of these

11 / 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

12 / 25

A cell, a resistor, a key, and an ammeter are arranged as shown in the circuit diagrams. The current recorded in the ammeter will be:

maximum in (i)

maximum in (ii)

maximum in (iii)

same in all the cases

13 / 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

14 / 25

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

Resistance

Reluctance

Conductance

inductance

15 / 25

S.I unit of resistance

ohm

mho

ohm metre

none

16 / 25

An ideal ammeter is one which has

infinite resistance

zero resistance

finite resistance

no resistance

17 / 25

The device used for detecting and indicating an electric current.

Ammeter

voltmeter

galvanometer

potentiometer

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

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.

20 / 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

21 / 25

Why is red used as the stopping light at traffic signals?

Because of shorter wavelength

Because of longer wavelength

Because of no wavelength

none

22 / 25

The effect seen Color of the sky during Sunrise and Sunset

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

The colour of the clear sky blue due to

refraction of light

scattering of light

reflection of light

Dispersion of light

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CBSE Class X – Science Physics Exam (Full Syllabus)

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