mock-1 | Free Mock Test 2026 | 150 MCQs

Question 1

Which of the following is the SI base unit of luminous intensity?

Accepted Answer

A) Candela

Question 2

Which of the following errors is caused by the observer’s incorrect positioning while reading a scale?

Accepted Answer

C) Parallax error

Question 3

The dimensional formula [ML²T⁻²] corresponds to which physical quantity?

Accepted Answer

B) Work

Question 4

Which statement about the significance of accuracy in measurement is correct?

Accepted Answer

B) Accuracy is the closeness of measured values to the true value

Question 5

The unit of force in the SI system is derived from the base units as: / SI

Accepted Answer

B) kg·m·s⁻²

Question 6

A ray of light travelling in air enters obliquely into water. What happens to its frequency?

Accepted Answer

C) Remains unchanged

Question 7

Two plane mirrors are inclined at 60°. How many images will be formed of an object placed between them?

Accepted Answer

A) 5

Question 8

Which condition is necessary for total internal reflection to occur?

Accepted Answer

C) Light travels from denser to rarer medium with angle > critical angle

Question 9

In Young’s double-slit experiment, the fringe width β is directly proportional to:

Accepted Answer

D) Distance between slits and screen (D)

Question 10

Which of the following phenomena confirms that light is a transverse wave?

Accepted Answer

C) Polarization

Question 11

The magnifying power of a simple microscope when the image is formed at the near point (D = 25 cm) is given by:

Accepted Answer

A) 1 + (D/f) (1 + (D/f))

Question 12

Which of the following is NOT an electromagnetic wave?

Accepted Answer

B) Sound waves

Question 13

The transfer of heat by the actual movement of particles in a fluid is called:

Accepted Answer

B) Convection

Question 14

A bimetallic strip bends on heating because:

Accepted Answer

B) One metal expands more than the other

Question 15

The absolute zero temperature on the Celsius scale is:

Accepted Answer

A) –273.15°C

Question 16

In a calorimeter, 100 g of water at 90°C is mixed with 200 g of water at 30°C. The final temperature of the mixture (neglecting heat loss) is:

Accepted Answer

B) 50°C

Question 17

The specific heat of water in SI units is approximately:

Accepted Answer

A) 4200 J/kg·K (4200

Question 18

The latent heat of vaporization of water is 2260 J/g. The heat required to convert 50 g of water at 100°C completely into steam at 100°C is:

Accepted Answer

A) 113000 J

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

Question 21

Which of the following is NOT a source of sound?

Accepted Answer

C) Still air

Question 22

A sound wave travels from air into water. Which parameter remains unchanged?

Accepted Answer

B) Frequency

Question 23

The velocity of sound is maximum in:

Accepted Answer

C) Iron

Question 24

Two sound waves of the same frequency and amplitude travelling in opposite directions will produce:

Accepted Answer

C) Stationary waves

Question 25

The minimum distance required to hear an echo is approximately: (speed of sound = 340 m/s, persistence of hearing = 0.1 s)

Accepted Answer

B) 17 m

Question 26

SONAR is based on the principle of:

Accepted Answer

A) Reflection of sound

Question 27

The Doppler effect for sound waves is observed when:

Accepted Answer

B) There is relative motion between source and observer

Question 28

Which of the following pairs is a scalar and a vector quantity respectively?

Accepted Answer

B) Mass and Velocity

Question 29

A ball is thrown vertically upward. What is the sign convention for velocity and acceleration due to gravity during upward motion (taking upward positive)?

Accepted Answer

B) Velocity positive, acceleration negative

Question 30

The coefficient of static friction between a block and a surface is 0.5. The minimum force required to just move a 2 kg block is (g=10 m/s²):

Accepted Answer

A) 10 N

Question 31

According to Newton’s third law, action and reaction forces:

Accepted Answer

B) Act on different bodies and are equal and opposite

Question 32

A constant force of 10 N acts on a 5 kg body for 4 seconds. The change in momentum is: / 10 N

Accepted Answer

A) 40 kg·m/s

Question 33

A body starts from rest and moves with uniform acceleration. If it covers 10 m in the 3rd second, its acceleration is:

Accepted Answer

B) 4 m/s²

Question 34

The maximum range of a projectile on level ground is achieved at an angle of projection:

Accepted Answer

B) 45°

Question 35

A machine does 500 J of work in 10 seconds. Its power is:

Accepted Answer

B) 50 W

Question 36

Which of the following statements is true regarding conservation of energy?

Accepted Answer

B) Total energy of an isolated system remains constant

Question 37

The center of mass of a uniform semi-circular ring lies at a distance from the center (on the axis of symmetry) equal to:

Accepted Answer

B) 2R/π

Question 38

The acceleration due to gravity at a height h above the Earth’s surface varies as:

Accepted Answer

A) g(h) = g(1 – 2h/R) (g(h) = g(1 – 2h/R))

Question 39

In uniform circular motion, which of the following remains constant?

Accepted Answer

C) Speed

Question 40

According to Kepler’s third law, the square of the orbital period of a planet is proportional to:

Accepted Answer

B) Cube of semi-major axis

Question 41

Within the elastic limit, Hooke’s law states that stress is directly proportional to:

Accepted Answer

A) Strain

Question 42

The magnetic field lines inside a bar magnet:

Accepted Answer

B) Move from south to north pole

Question 43

A bar magnet of pole strength m and length 2l is bent into a semicircle. The new magnetic moment will be: / m

Accepted Answer

D) m × (4l/π) (m × (4l/π))

Question 44

The force between two magnetic poles obeys Coulomb’s law for magnetism which is analogous to:

Accepted Answer

A) Inverse square law

Question 45

Which material is considered diamagnetic?

Accepted Answer

C) Bismuth

Question 46

Two point charges +Q and +Q are placed 2 cm apart. If the distance between them is increased to 4 cm, the electrostatic force between them becomes:

Accepted Answer

B) One-fourth

Question 47

The electric field inside a charged spherical conductor in electrostatic equilibrium is:

Accepted Answer

C) Zero

Question 48

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

Accepted Answer

B) 2 Ω

Question 49

The EMF of a cell is the:

Accepted Answer

B) Potential difference across terminals in open circuit

Question 50

Which of the following is a primary cell?

Accepted Answer

C) Daniel cell

Question 51

A wire of resistance R is cut into three equal pieces and connected in parallel. The effective resistance becomes:

Accepted Answer

B) R/9

Question 52

An electric heater of power 1000 W operates for 2 hours. The energy consumed in joules is: / 1000 W

Accepted Answer

A) 7.2 × 10⁶ J

Question 53

Kirchhoff’s junction rule (current law) is based on the principle of conservation of:

Accepted Answer

A) Charge

Question 54

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

Accepted Answer

C) Joule’s law

Question 55

A straight current-carrying conductor produces a magnetic field whose direction can be found using:

Accepted Answer

B) Right hand thumb rule

Question 56

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

Accepted Answer

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

Question 57

The magnitude of induced EMF in a coil is directly proportional to:

Accepted Answer

A) Rate of change of magnetic flux

Question 58

An AC generator converts: / AC

Accepted Answer

A) Mechanical energy to electrical energy

Question 59

A step-up transformer increases:

Accepted Answer

A) Voltage

Question 60

Anode rays are also known as:

Accepted Answer

A) Canal rays

Question 61

According to Rutherford’s α-particle scattering experiment, the nucleus:

Accepted Answer

B) Contains most of the mass and is positively charged

Question 62

The Bohr radius for the ground state of hydrogen atom is:

Accepted Answer

A) 0.53 Å (0.53

Question 63

Which radioactive emission has the highest penetrating power?

Accepted Answer

C) Gamma

Question 64

Mass defect is:

Accepted Answer

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