mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

Which of the following is the SI base unit of length?

Accepted Answer

B) Meter

Question 2

The dimensional formula of force is:

Accepted Answer

A) [MLT⁻²] ([

Question 3

If a measurement is 5.23 cm with 0.01 cm least count, the absolute error is ±0.01 cm. This is an example of:

Accepted Answer

D) Instrumental error

Question 4

Which quantity has the same dimensional formula as angular momentum?

Accepted Answer

A) Planck's constant

Question 5

The number of significant figures in 0.00450 is: / 0.00450

Accepted Answer

B) 3

Question 6

The SI unit of luminous intensity is:

Accepted Answer

A) Candela

Question 7

In reflection, the incident ray, reflected ray and the normal all lie in the:

Accepted Answer

A) Same plane

Question 8

Total internal reflection can occur only when light travels from:

Accepted Answer

A) Denser to rarer medium

Question 9

Which phenomenon explains the bright and dark fringes in a double-slit experiment?

Accepted Answer

A) Interference

Question 10

The phenomenon of polarization confirms that light waves are:

Accepted Answer

A) Transverse

Question 11

The mirror formula for a spherical mirror is (u = object distance, v = image distance, f = focal length):

Accepted Answer

A) 1/f = 1/v + 1/u (1/f = 1/v + 1/u)

Question 12

Which EM wave has the highest frequency?

Accepted Answer

A) Gamma rays

Question 13

Heat transmission by the actual movement of particles occurs in:

Accepted Answer

A) Convection

Question 14

Water has maximum density at:

Accepted Answer

A) 4°C (4°C)

Question 15

The amount of heat required to raise the temperature of 1 kg of a substance by 1 K is called: / 1 kg

Accepted Answer

A) Specific heat capacity

Question 16

The latent heat of fusion of ice is 334 kJ/kg. This means:

Accepted Answer

A) 1 kg ice at 0°C absorbs 334 kJ to become water at 0°C (0°C

Question 17

The Celsius and Fahrenheit scales coincide at:

Accepted Answer

A) -40° (-40°)

Question 18

Calorific value of a fuel is measured in:

Accepted Answer

A) kJ/kg (kJ/kg)

Question 19

The speed of sound is maximum in:

Accepted Answer

A) Solids

Question 20

Echo is produced due to:

Accepted Answer

A) Reflection of sound

Question 21

SONAR uses: / SONAR

Accepted Answer

A) Ultrasonic waves

Question 22

The change in apparent frequency due to relative motion between source and observer is:

Accepted Answer

A) Doppler effect

Question 23

Which is a scalar quantity?

Accepted Answer

A) Work

Question 24

A body moving in a circular path with constant speed has:

Accepted Answer

A) Centripetal acceleration

Question 25

The maximum range of a projectile is achieved at an angle of:

Accepted Answer

A) 45° (45°)

Question 26

Newton's third law states that forces always occur:

Accepted Answer

A) In action-reaction pairs

Question 27

The work done by friction is always:

Accepted Answer

A) Negative

Question 28

The equation of motion v² = u² + 2as is valid only for:

Accepted Answer

A) Uniform acceleration

Question 29

Conservation of mechanical energy holds if:

Accepted Answer

A) Only conservative forces act

Question 30

The centre of mass of a uniform ring lies:

Accepted Answer

A) At its geometric centre

Question 31

According to Kepler’s second law, a planet moving around the sun sweeps equal areas in equal intervals of time. This is a consequence of:

Accepted Answer

A) Angular momentum

Question 32

Hooke’s law is applicable within:

Accepted Answer

A) Elastic limit

Question 33

Magnetic field lines:

Accepted Answer

A) Form closed loops

Question 34

The inverse square law for magnetic force is analogous to:

Accepted Answer

A) Coulomb’s law in electrostatics

Question 35

Ferromagnetic materials are characterized by:

Accepted Answer

A) High permeability and strong attraction to magnets

Question 36

The unit of pole strength is:

Accepted Answer

A) Ampere-metre (A·m)

Question 37

Coulomb’s law for electric force between two point charges is valid for:

Accepted Answer

A) Stationary charges only

Question 38

Two resistors 6 Ω and 3 Ω in parallel combination give equivalent resistance: / 6 Ω

Accepted Answer

A) 2 Ω (2 Ω)

Question 39

Ohm’s law is obeyed by:

Accepted Answer

A) Ohmic conductors like metals

Question 40

Kirchhoff’s junction rule is based on conservation of:

Accepted Answer

A) Charge

Question 41

Joule’s heating law states heat produced H = I²Rt. The factor I²R is:

Accepted Answer

A) Power dissipated

Question 42

Ampere’s circuital law relates the line integral of magnetic field around a closed loop to:

Accepted Answer

A) Total current enclosed

Question 43

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

Accepted Answer

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

Question 44

Faraday’s law of electromagnetic induction gives:

Accepted Answer

A) Induced emf ∝ rate of change of magnetic flux

Question 45

Lenz’s law gives the direction of induced emf and is consistent with:

Accepted Answer

A) Conservation of energy

Question 46

A step-up transformer increases:

Accepted Answer

A) Voltage

Question 47

Cathode rays are streams of:

Accepted Answer

A) Electrons

Question 48

Rutherford’s alpha scattering experiment led to discovery of:

Accepted Answer

A) Nucleus

Question 49

In Bohr’s model, the angular momentum of electron in nth orbit is:

Accepted Answer

A) nh/2π (nh/2π)

Question 50

Gamma radiations are:

Accepted Answer

A) Electromagnetic waves

Question 51

Half-life of a radioactive substance is 10 days. After 30 days, the fraction remaining is:

Accepted Answer

A) 1/8 (1/8)

Question 52

Isotopes have same:

Accepted Answer

A) Atomic number

Question 53

Nuclear fission occurs when a heavy nucleus splits into:

Accepted Answer

A) Lighter nuclei with release of energy

Question 54

Mass defect is the difference between:

Accepted Answer

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

Question 55

In a semiconductor, the majority charge carriers in p-type are:

Accepted Answer

A) Holes

Question 56

A Zener diode is mainly used for:

Accepted Answer

A) Voltage regulation

Question 57

A p-n junction diode conducts when: / p-n

Accepted Answer

A) Forward biased

Question 58

Which logic gate gives HIGH output only when all inputs are HIGH?

Accepted Answer

A) AND (AND)

Question 59

Modulation is the process of:

Accepted Answer

A) Superimposing message signal on high frequency carrier wave

Question 60

Which of the following is a compound?

Accepted Answer

A) Water (H₂O)

Question 61

Chromatography is used for:

Accepted Answer

A) Separation of mixtures

Question 62

Boyle’s law relates pressure and volume of a gas at constant:

Accepted Answer

A) Temperature

Question 63

One mole of any gas at STP occupies:

Accepted Answer

A) 22.4 L (22.4 L)

Question 64

According to Dalton’s atomic theory, atoms of the same element are:

Accepted Answer

A) Identical in mass and properties