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

A current-carrying conductor is clench in totally vertical direction. In order to produce a clockwise magnetic feld around the conductor, the current should passed in the conductor:

from top towards bottom

from left towards right

from bottom towards top

from right towards left

2 / 25

Inside the magnet, the field lines move from :

from south to north

from north to south

away from north pole

away from south poles

3 / 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

4 / 25

Which of the subsequent is not attracted by a magnet:

Steel

Cobalt

Brass

Nickel

5 / 25

The instrument that use to direct electric current in the circuit is known as:

Electric motor

A.C generator

Galvanometer

None of the above

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

The phenomenon discovered by Faraday.

electromagnetic induction

Electromagnetic conduction

Electromagnetic repulsion

Electromagnetism

8 / 25

The law states that if the forefinger indicates the direction of the magnetic field and thumb shows the direction of motion of conductor, then the middle finger will show the direction of induced current

fleming left hand rule

Fleming right hand rule

ohms law

none

9 / 25

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

vary continuously

does not change

reduces substantially

increases heavily

10 / 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

11 / 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

12 / 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

13 / 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

14 / 25

When electric current is passed, electrons move from:

High potential to low potential

Do not move

Out of the conductor

Low potential to high potential

15 / 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

16 / 25

True test of charge is

Attraction only

Repulsion only

Both attraction and repulsion

None of the above

17 / 25

The condition for the credibility of Ohm’s law is that the

Temperature should remain constant

Current should be proportional to voltage

Resistance must be wire wound type

All of the above

18 / 25

A clear sky appears blue, because:

blue light gets absorbed in the atmosphere

ultraviolet radiations are absorbed in the atmosphere

violet and blue lights get scattered more than the lights of all other colours by the atmosphere

lights of all other colours is scattered more than the violet and blue colour lights by the atmosphere

19 / 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

20 / 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

21 / 25

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

Single chromatic

Dichromatic

Monochromatic

none

22 / 25

The splitting of light into its component colours is called

Dispersion of light

Scattering of light

Refraction of light

Reflection of light

23 / 25

Lenses which have both concave and convex structure.

Bifocal lenses

Concave lenses

Difocal lenses

Convex lenses

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

Your score is

0%

CBSE Class X – Science Physics Exam (Full Syllabus)

Archives

Categories