mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

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

Accepted Answer

D) Both A and B (A

Question 2

The significant figures in the number 0.003040 are

Accepted Answer

B) 4

Question 3

A student measures a length as 4.52 cm, 4.53 cm, 4.51 cm. The true value is 4.50 cm. The measurements are

Accepted Answer

B) Precise but not accurate

Question 4

The dimensional formula of Planck's constant h is

Accepted Answer

A) [ML²T⁻¹]

Question 5

The SI unit of luminous intensity is

Accepted Answer

C) Candela

Question 6

The critical angle for total internal reflection is least for light travelling from

Accepted Answer

C) Diamond to air

Question 7

Which phenomenon explains the blue colour of the sky?

Accepted Answer

C) Scattering

Question 8

A convex lens of focal length 20 cm is used to form an image twice the size of the object. For a real image, the object distance should be / 20 cm

Accepted Answer

B) 30 cm

Question 9

In Young's double slit experiment, the central fringe is

Accepted Answer

B) Bright

Question 10

Polarization of light proves that light waves are

Accepted Answer

B) Transverse

Question 11

The angle between the incident ray and the normal is called

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B) Angle of incidence

Question 12

A pressure cooker works on the principle that boiling point of water increases with

Accepted Answer

B) Increase in pressure

Question 13

A bimetallic strip bends on heating because

Accepted Answer

B) Metals have different coefficients of expansion

Question 14

Water has maximum density at

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B) 4°C

Question 15

The specific heat of water is

Accepted Answer

A) 1 cal/g°C

Question 16

The latent heat of vaporization of water is approximately

Accepted Answer

B) 540 cal/g

Question 17

Calorific value is defined as

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B) Heat produced by burning 1 kg fuel completely (1 kg

Question 18

The temperature of -40°C is equivalent to / -40°C

Accepted Answer

A) -40°F

Question 19

Echo is produced due to

Accepted Answer

A) Reflection of sound

Question 20

The speed of sound is maximum in

Accepted Answer

C) Steel

Question 21

SONAR is based on the principle of / SONAR

Accepted Answer

C) Ultrasonic waves

Question 22

The Doppler effect is observed when

Accepted Answer

B) There is relative motion between source and observer

Question 23

The unit of sound intensity level is

Accepted Answer

B) Decibel

Question 24

The time period of a simple pendulum depends on

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B) Length of the pendulum

Question 25

Which of the following is a vector quantity?

Accepted Answer

C) Displacement

Question 26

A car accelerates uniformly from 18 km/h to 36 km/h in 5 seconds. Its acceleration is

Accepted Answer

A) 1 m/s²

Question 27

The range of a projectile is maximum at an angle of

Accepted Answer

B) 45°

Question 28

The work done by a man in holding a 20 kg mass on his head while standing is

Accepted Answer

C) 0 J

Question 29

The energy stored in a spring when stretched by 2 cm (k=1000 N/m) is

Accepted Answer

B) 0.2 J

Question 30

Newton's first law of motion is also known as

Accepted Answer

B) Law of inertia

Question 31

The coefficient of friction between two surfaces depends on

Accepted Answer

B) Nature of surfaces

Question 32

The momentum of a body of mass 5 kg moving at 10 m/s is / 10 m/s

Accepted Answer

B) 50 kg m/s

Question 33

The centre of mass of a uniform semicircular ring lies at

Accepted Answer

B) 2R/π from the centre

Question 34

The gravitational force between two masses is F. If the distance is doubled, the force becomes

Accepted Answer

B) F/4

Question 35

According to Kepler's second law, a planet sweeps out equal areas in

Accepted Answer

B) Equal times

Question 36

The direction of magnetic field lines inside a bar magnet is

Accepted Answer

B) From South to North

Question 37

The force between two magnetic poles is governed by

Accepted Answer

B) Inverse Square Law

Question 38

Which of the following is diamagnetic?

Accepted Answer

C) Bismuth

Question 39

The SI unit of magnetic pole strength is

Accepted Answer

C) Ampere-meter

Question 40

The electric field inside a charged spherical conductor is

Accepted Answer

C) Zero

Question 41

Two resistors 3Ω and 6Ω are connected in parallel. The equivalent resistance is / 3Ω

Accepted Answer

B) 2Ω

Question 42

According to Ohm's law, the V-I graph for a metallic conductor is

Accepted Answer

A) A straight line passing through origin

Question 43

The EMF of a cell is measured in

Accepted Answer

C) Volts

Question 44

In Kirchhoff's Current Law, the algebraic sum of currents at a junction is

Accepted Answer

C) Zero

Question 45

A 100W, 220V bulb is operated at 110V. The power consumed is approximately / 100W, 220V

Accepted Answer

C) 25 W

Question 46

The heat produced in a resistor follows Joule's law H =

Accepted Answer

B) I²Rt

Question 47

The magnetic field inside a long solenoid is

Accepted Answer

B) Uniform

Question 48

Fleming's left-hand rule is used to find

Accepted Answer

B) Direction of force on a current-carrying conductor

Question 49

The induced EMF in a coil depends on

Accepted Answer

B) Rate of change of magnetic flux

Question 50

Lenz's law is a consequence of the law of conservation of

Accepted Answer

B) Energy

Question 51

The principle of a transformer is based on

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B) Mutual induction

Question 52

The unit of inductance is

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B) Henry

Question 53

Cathode rays are

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B) Stream of electrons

Question 54

According to Rutherford's alpha scattering experiment, most of the atom is

Accepted Answer

C) Empty space

Question 55

The radius of the first Bohr orbit for hydrogen is

Accepted Answer

B) 0.053 nm

Question 56

Gamma rays are

Accepted Answer

C) Electromagnetic waves

Question 57

The half-life of a radioactive substance is 5 years. After 15 years, the fraction left undecayed is

Accepted Answer

C) 1/8

Question 58

Isotopes have same number of

Accepted Answer

B) Protons

Question 59

Nuclear fission occurs when

Accepted Answer

B) Heavy nucleus splits

Question 60

The mass defect is

Accepted Answer

B) Difference between mass of nucleus and sum of masses of nucleons

Question 61

In a p-n junction diode, the depletion region contains / p-n

Accepted Answer

B) Immobile ions

Question 62

A Zener diode is primarily used as a

Accepted Answer

C) Voltage regulator

Question 63

The output of an AND gate is HIGH only when / AND

Accepted Answer

B) All inputs are HIGH

Question 64

In a transistor, the emitter-base junction is always

Accepted Answer

B) Forward biased