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

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

4 / 25

Magnetic effect of current was identified by:

Oersted

Faraday

Bohr

Ampere

5 / 25

Overloading is caused to:

Insulation of wire is damaged

fault in the appliances

accidental hike in supply voltage

All of the above

6 / 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

7 / 25

Commercial electric motors do not use

A permanent magnet to rotate the armature

Effectively large number of turns of conducting wire in the current carrying coil.

A soft iron core on which the coil is wound

An electromagnet to rotate the armature

8 / 25

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

magnet stops.

magnet starts

magnet remains constant

none of these

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 least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is:

< 100 Ω

< 4 Ω

< 1 Ω (d) > 2 Ω

NOT AVAILABLE

11 / 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

12 / 25

A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross-section of the filament in 16 seconds would be roughly

10 to the power of 20

10 to the power of 16

10 to the power of 18

10 to the power of 23

13 / 25

A student drives out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1 R2 and R3 respectively. Which of the following is huge?

R1 = R2 = R3

R1 > R2 > R3

R3 > R2 > R1

R2 > R3 > R1

14 / 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

15 / 25

Electrical resistivity of a given metallic wire depends upon:

Its length

Its thickness

Its shape

Nature of the material

16 / 25

S.I unit of resistivity

ohm

mho

ohm metre

none

17 / 25

The unit of electric power may also be expressed as

volt-ampere

kilowatt-hour

watt-second

joule second

18 / 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

19 / 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.

20 / 25

Lenses which have both concave and convex structure.

Bifocal lenses

Concave lenses

Difocal lenses

Convex lenses

21 / 25

Myopia can be corrected by using

convex lens

concave lenses

both concave and convex

none

22 / 25

Astigmatism can be corrected

convex lens

concave lenses

cyclindrical lens

bifocal lens

23 / 25

Rainbow is caused due to

Dispersion of light

Scattering of light

Refraction of light

Reflection of light

24 / 25

The sky appears black to an astronaut as there is no

refraction of light

scattering of light

reflection of light

Dispersion of light

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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