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

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

3 / 25

Overloading is caused to:

Insulation of wire is damaged

fault in the appliances

accidental hike in supply voltage

All of the above

4 / 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

5 / 25

A coil of many circular turns of wire wrapped in the shape of a cylinder

Bar magnet

solenoid

horse shoe magnet

none

6 / 25

The change in magnetic feld lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.

Electromagnetic induction

Electromagnetic conduction

Electromagnetic repulsion

Electromagnetism

7 / 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

8 / 25

When a strong bar magnet is pushed into a coil of insulated copper wire connected to a galvanometer, we will observe a deflection in the galvanometer in

unidirection

bidirection

multidirection

none

9 / 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

10 / 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

11 / 25

True test of charge is

Attraction only

Repulsion only

Both attraction and repulsion

None of the above

12 / 25

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

V = I R

I=VR

R=VI

all of these

13 / 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.

14 / 25

The rate at which electrical work is done or the rate at which electrical energy is consumed

Electrical power

electrical inductivity

electrical resistivity

none

15 / 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

16 / 25

The device used to measure the internal resistance of a cell, to compare the e.m.f. of two cells and potential diference across a resistor

Ammeter

voltmeter

galvanometer

potentiometer

17 / 25

The device used for detecting and indicating an electric current.

Ammeter

voltmeter

galvanometer

potentiometer

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

The bluish colour of water in deep sea is due to:

the presence of algae and other plants found in water

refection of the sky in water

scattering of light

absorption of light by the sea

20 / 25

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

white

dark

pink

no color

21 / 25

When sunlight passes through a canopy of a dense forest, tiny water droplets in the water scatter light.This is an example of

Tyndall effect

Dispersion of light

Scattering of light

Rrefraction of light

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

When a person can see faraway objects but not nearby objects.

Far – sightedness

Myopia

Astigmatism

None

25 / 25

The colour of scattered light depends on the

size of the scattering particle

frequency of the scattering particle

distanceof the scattering particle

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CBSE Class X – Science Physics Exam (Full Syllabus)

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