mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

Which of the following pairs of physical quantities have the same dimensions?

Accepted Answer

A) Work and Torque

Question 2

A screw gauge has a pitch of 1 mm and 100 divisions on its circular scale. The least count of the instrument is:

Accepted Answer

B) 0.01 mm

Question 3

The percentage error in the measurement of the radius of a sphere is 1%. The percentage error in its volume will be:

Accepted Answer

B) 3%

Question 4

Using dimensional analysis, check which of the following equations could be correct (k is a dimensionless constant):

Accepted Answer

A) v = k√(gh) (v = k√(gh))

Question 5

The SI base unit for luminous intensity is:

Accepted Answer

B) Candela

Question 6

A light ray travels from air to glass. If the angle of incidence is 45° and refractive index of glass is √2, the angle of refraction is:

Accepted Answer

C) 30°

Question 7

Which of the following correctly represents the laws of reflection?

Accepted Answer

A) Angle of incidence = Angle of reflection, and incident ray, reflected ray and normal are coplanar

Question 8

Total internal reflection occurs when light travels from:

Accepted Answer

B) Denser to rarer medium and angle of incidence > critical angle

Question 9

In Young's double slit experiment, the fringe width β is given by:

Accepted Answer

B) β = λD/d

Question 10

An unpolarized light passes through a polarizer. The intensity of transmitted light is:

Accepted Answer

B) Half of incident

Question 11

A concave mirror produces a magnification of -2. The image is:

Accepted Answer

B) Real and inverted

Question 12

Which of the following EM waves has the highest frequency?

Accepted Answer

D) Gamma rays

Question 13

Which mode of heat transmission does not require a medium?

Accepted Answer

C) Radiation

Question 14

A bimetallic strip bends on heating because:

Accepted Answer

B) Metals have different coefficients of thermal expansion

Question 15

Absolute zero corresponds to:

Accepted Answer

B) 0 K

Question 16

In a calorimeter, 50 g of water at 80°C is mixed with 50 g of water at 20°C. Neglecting heat loss, the final temperature is:

Accepted Answer

B) 50°C

Question 17

The specific heat capacity of water is:

Accepted Answer

A) 1 cal/g°C

Question 18

During melting, the temperature of a solid:

Accepted Answer

B) Remains constant until all solid melts

Question 19

Water has maximum density at:

Accepted Answer

B) 4°C

Question 20

The calorific value of a fuel is measured in:

Accepted Answer

A) J/kg or kJ/kg (J/kg

Question 21

Sound waves are:

Accepted Answer

B) Longitudinal

Question 22

The velocity of sound is maximum in:

Accepted Answer

C) Steel

Question 23

The frequency of a sound wave is 500 Hz. Its time period is:

Accepted Answer

A) 0.002 s

Question 24

A sound wave is reflected from a wall. If the minimum distance for echo is 17 m, the speed of sound in air is: (taking persistence of hearing = 0.1 s)

Accepted Answer

A) 340 m/s

Question 25

SONAR works on the principle of: / SONAR

Accepted Answer

B) Echo of ultrasonic waves

Question 26

A source of sound moves towards a stationary observer. The frequency heard by observer will be:

Accepted Answer

A) Higher than actual

Question 27

Which of the following is a vector quantity?

Accepted Answer

C) Displacement

Question 28

A car moving with uniform velocity on a straight road is an example of:

Accepted Answer

B) Translatory motion

Question 29

Static friction is:

Accepted Answer

A) Greater than kinetic friction

Question 30

A body continues in its state of rest or uniform motion unless acted upon by an external unbalanced force. This is:

Accepted Answer

A) Newton's First Law

Question 31

A bullet of mass 20 g is fired with velocity 200 m/s. Its momentum is: / 20 g

Accepted Answer

A) 4 kg m/s

Question 32

A car accelerates uniformly from rest to 20 m/s in 10 seconds. The distance covered is:

Accepted Answer

A) 100 m

Question 33

The path of a projectile is a:

Accepted Answer

C) Parabola

Question 34

1 kWh of energy is equal to: / 1 kWh

Accepted Answer

A) 3.6 × 10⁶ J

Question 35

In an isolated system, total mechanical energy is conserved. This is true when:

Accepted Answer

A) Only conservative forces act

Question 36

The center of mass of a uniform semicircular ring lies:

Accepted Answer

B) On the axis of symmetry at 2R/π from center

Question 37

The acceleration due to gravity at a height h from Earth's surface is g'. If h = R (Earth's radius), then g' = ?

Accepted Answer

B) g/4

Question 38

A body in uniform circular motion has:

Accepted Answer

C) Centripetal acceleration directed towards center

Question 39

Hooke's law is valid within:

Accepted Answer

A) Elastic limit

Question 40

The magnetic lines of force inside a bar magnet:

Accepted Answer

B) Go from South to North

Question 41

The pole strength of a bar magnet is m, and its length is 2l. Its magnetic dipole moment is:

Accepted Answer

B) m × 2l

Question 42

The force between two magnetic poles follows:

Accepted Answer

A) Inverse square law

Question 43

Which of the following is a paramagnetic material?

Accepted Answer

C) Aluminium

Question 44

Two point charges q₁ = +3 μC and q₂ = -3 μC are placed 10 cm apart. The force between them is (k = 9×10⁹ Nm²/C²):

Accepted Answer

A) 8.1 N attractive (8.1 N

Question 45

In a simple circuit, if the resistance is doubled keeping voltage constant, the current becomes:

Accepted Answer

A) Half

Question 46

A copper wire has resistance R. If its length is doubled and area is halved, its new resistance is:

Accepted Answer

C) 4R

Question 47

Three resistors of 2Ω each are connected in parallel. The equivalent resistance is: / 2Ω

Accepted Answer

B) 2/3 Ω

Question 48

The EMF of a cell is measured in:

Accepted Answer

B) Volt

Question 49

A lead-acid battery is an example of:

Accepted Answer

B) Secondary cell

Question 50

Ohm's law is applicable to:

Accepted Answer

B) Only metallic conductors at constant temperature

Question 51

An electric bulb rated 100 W, 220 V draws a current of: / 100 W, 220 V

Accepted Answer

A) 0.45 A

Question 52

In a Wheatstone bridge, the galvanometer shows zero deflection when R₁/R₂ = R₃/R₄. This is based on:

Accepted Answer

B) Kirchhoff's laws

Question 53

Heat produced in a resistor is given by H = I²Rt. This is known as:

Accepted Answer

A) Joule's law

Question 54

A long straight wire carries a current I. The magnetic field at a distance r is given by:

Accepted Answer

A) B = μ₀I/(2πr)

Question 55

Fleming's left hand rule is used to find direction of:

Accepted Answer

B) Force on a current-carrying conductor in magnetic field

Question 56

Electromagnetic induction was discovered by:

Accepted Answer

B) Faraday

Question 57

According to Lenz's law, induced current opposes:

Accepted Answer

A) The cause producing it

Question 58

An AC generator works on the principle of:

Accepted Answer

C) Electromagnetic induction

Question 59

The core of a transformer is laminated to:

Accepted Answer

A) Reduce eddy currents

Question 60

Cathode rays are:

Accepted Answer

B) Stream of electrons

Question 61

In Rutherford's alpha scattering experiment, most alpha particles:

Accepted Answer

B) Passed through undeflected

Question 62

The radius of nth orbit in Bohr model is proportional to:

Accepted Answer

B) n²

Question 63

Gamma rays are:

Accepted Answer

C) Electromagnetic waves

Question 64

Mass defect is the difference between:

Accepted Answer

B) Mass of nucleus and sum of masses of its nucleons