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

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

2 / 25

Which of the subsequent is not attracted by a magnet:

Steel

Cobalt

Brass

Nickel

3 / 25

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

Magnetic Needle

Ammeter

Galvanometer

Voltmeter

4 / 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

5 / 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

6 / 25

To determine the direction of force experienced by a current carrying conductor placed in a uniform magnetic feld.

Fleming left hand rule

Fleming right hand rule

ohms law

none

7 / 25

Which of the following is not attracted by a magnet:

Steel

cobalt

nickel

brass

8 / 25

The phenomenon discovered by Faraday.

electromagnetic induction

Electromagnetic conduction

Electromagnetic repulsion

Electromagnetism

9 / 25

Electrical resistivity of a given metallic wire depends upon:

Its length

Its thickness

Its shape

Nature of the material Explanation:

10 / 25

The instrument used for measuring electric current is:

galvanometer

ammeter

voltmeter

potentiometer

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 fuse wire frequently gets burnt when used with a good heater. It is advised to use a fuse wire of

more length

less radius

less length

more radius

13 / 25

The commercial unit of electric energy is

horse power

joule/hour

kilowatt hour

mega-watt hour

14 / 25

Electrical resistivity of a given metallic wire depends upon:

Its length

Its thickness

Its shape

Nature of the material

15 / 25

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

V = I R

I=VR

R=VI

all of these

16 / 25

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

Resistance

Reluctance

Conductance

inductance

17 / 25

When a 4 V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. The value of the resistance of the resister is

4 Ohm

40 Ohm

400 Ohm

0.4 Ohm

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

A student traces the path of a ray of light through a triangular glass prism for diferent values of angle of incidence. On analysing the ray diagrams, which one of the following conclusions is he likely to draw?

The emergent ray is parallel to the incident ray

The emergent ray bends at an angle to the direction of the incident ray

The emergent ray and the refracted ray are at right angles to each other.

The emergent ray is perpendicula

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

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.

23 / 25

What would have been the colour of sky if the earth had no atmosphere

white

dark

pink

no color

24 / 25

Lenses which have both concave and convex structure.

Bifocal lenses

Concave lenses

Difocal lenses

Convex lenses

25 / 25

The refractive index of glass is largest 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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