The kinetic energy of a rotating body is given by –
(A) ½mv²
(B) Iω²
(C) ½Iω²
(D) mgh
Answer: (C)

The electrical conductivity of a semiconductor –
(A) Increases with temperature
(B) Decreases with temperature
(C) Remains constant
(D) Becomes zero
Answer: (A)

Time period of a pendulum depends on –
(A) Length only
(B) Mass and length
(C) Amplitude only
(D) Both mass and amplitude
Answer: (A)

A rectifier converts –
(A) DC to AC
(B) AC to DC
(C) High voltage to low
(D) Voltage to current
Answer: (B)

Spectrometer is used to measure –
(A) Resistance
(B) Specific heat
(C) Wavelength
(D) Charge
Answer: (C)

The total energy of an orbiting satellite is –
(A) Zero
(B) Positive
(C) Negative
(D) Equal to potential energy
Answer: (C)

Magnetism in materials arises due to –
(A) Protons
(B) Moving electrons
(C) Neutrons
(D) Photons
Answer: (B)

Pressure inside a bubble is –
(A) Greater than outside
(B) Less than outside
(C) Same as outside
(D) Always zero
Answer: (A)

In simple harmonic motion, velocity is maximum at –
(A) Amplitude
(B) Mean position
(C) Zero displacement
(D) Extreme position
Answer: (B)

A ball rebounds to lesser height due to –
(A) Gravity
(B) Inelastic collision
(C) Friction
(D) Surface tension
Answer: (B)

Permeability of free space is –
(A) 4π × 10⁻⁷ H/m
(B) 8.85 × 10⁻¹² F/m
(C) 1.6 × 10⁻¹⁹ C
(D) 3 × 10⁸ m/s
Answer: (A)

A supercooled liquid behaves like –
(A) Solid
(B) Gas
(C) Viscous liquid
(D) Plasma
Answer: (C)

A concave lens always forms –
(A) Real and enlarged image
(B) Real and inverted image
(C) Virtual and erect image
(D) Enlarged real image
Answer: (C)

The dimension of power is –
(A) ML²T⁻³
(B) ML²T⁻²
(C) MLT⁻²
(D) MT⁻²
Answer: (A)

Hydraulic brakes work on –
(A) Bernoulli’s principle
(B) Pascal’s law
(C) Newton’s third law
(D) Archimedes’ principle
Answer: (B)

SI unit of electric potential is –
(A) Ampere
(B) Joule
(C) Volt
(D) Coulomb
Answer: (C)

Red light bends least in prism because –
(A) It has high speed
(B) It has highest wavelength
(C) It is absorbed
(D) It has less energy
Answer: (B)

The instrument to measure electric current is –
(A) Voltmeter
(B) Ammeter
(C) Potentiometer
(D) Multimeter
Answer: (B)

In a LCR circuit, resonance occurs when –
(A) XL = XC
(B) R = 0
(C) Voltage = 0
(D) Frequency = 0
Answer: (A)

The magnetosphere protects Earth from –
(A) UV rays
(B) Infrared rays
(C) Solar wind
(D) Sound waves
Answer: (C)

A microscope is used to view –
(A) Distant objects
(B) Deep sky
(C) Minute objects
(D) Underwater view
Answer: (C)

The coefficient of restitution is 0 in –
(A) Elastic collision
(B) Inelastic collision
(C) Free fall
(D) Projectile motion
Answer: (B)

Rayleigh scattering explains –
(A) Total internal reflection
(B) Red color of sunset
(C) White color of light
(D) Refraction in lens
Answer: (B)

In thermionic emission, electrons are emitted by –
(A) Cold metal
(B) Heated metal
(C) Magnetized surface
(D) Charged insulator
Answer: (B)

Elasticity is maximum in –
(A) Rubber
(B) Steel
(C) Glass
(D) Copper
Answer: (B)

Archimedes’ principle applies to –
(A) Objects in air
(B) Objects in vacuum
(C) Floating and submerged bodies in fluids
(D) Rolling bodies
Answer: (C)

Sound travels faster in –
(A) Solid
(B) Liquid
(C) Gas
(D) Vacuum
Answer: (A)

Capacitance depends on –
(A) Area of plates
(B) Distance between plates
(C) Dielectric material
(D) All of the above
Answer: (D)

Tides are caused due to –
(A) Sun’s gravity
(B) Moon’s gravity
(C) Rotation of Earth
(D) Ocean wind
Answer: (B)

Laser light is –
(A) Monochromatic and coherent
(B) Incoherent
(C) Multicolored
(D) Unpolarized
Answer: (A)

A comet tail always points –
(A) Toward sun
(B) Away from sun
(C) Towards Earth
(D) Random direction
Answer: (B)

Centripetal force is provided by –
(A) Friction in circular road
(B) Gravity in orbit
(C) Tension in string
(D) All of the above
Answer: (D)

Dimensional formula of pressure is –
(A) ML⁻¹T⁻²
(B) MLT⁻²
(C) MLT⁻¹
(D) ML²T⁻²
Answer: (A)

SI unit of inductance is –
(A) Weber
(B) Tesla
(C) Henry
(D) Farad
Answer: (C)

A rocket works based on –
(A) Newton’s 2nd law
(B) Bernoulli’s law
(C) Newton’s 3rd law
(D) Conservation of mass
Answer: (C)

Inertia of rest explains –
(A) A stationary object remains at rest
(B) Moving object stops
(C) Bending in circular path
(D) Rolling resistance
Answer: (A)

Unit of luminous flux is –
(A) Candela
(B) Lux
(C) Lumen
(D) Diopter
Answer: (C)

Wavelength × frequency gives –
(A) Time
(B) Speed
(C) Force
(D) Distance
Answer: (B)

SI unit of energy is –
(A) Newton
(B) Joule
(C) Watt
(D) Pascal
Answer: (B)

Mass–energy equivalence is given by –
(A) E = mc
(B) E = mc²
(C) E = mv²
(D) E = ½mv²
Answer: (B)

The solar constant is –
(A) Total solar output
(B) Solar energy per m² at Earth
(C) Sun temperature
(D) Radius of sun
Answer: (B)

The unit of surface tension is –
(A) N/m
(B) N/m²
(C) kg·m/s²
(D) Pascal
Answer: (A)

A manometer measures –
(A) Humidity
(B) Atmospheric pressure
(C) Difference in pressure
(D) Gas flow rate
Answer: (C)

Terminal velocity occurs when –
(A) Object accelerates infinitely
(B) Net force becomes zero
(C) Mass increases
(D) Drag equals velocity
Answer: (B)

The wavelength of visible light is approx –
(A) 10–100 nm
(B) 400–700 nm
(C) 700–1000 nm
(D) 1–5 mm
Answer: (B)

The Coulomb is the unit of –
(A) Charge
(B) Capacitance
(C) Resistance
(D) Voltage
Answer: (A)

The angle of repose depends on –
(A) Mass
(B) Area
(C) Coefficient of friction
(D) Force
Answer: (C)

Newton-meter is a unit of –
(A) Force
(B) Energy
(C) Torque
(D) Pressure
Answer: (C)

A longitudinal wave moves –
(A) Perpendicular to motion
(B) Circular
(C) In direction of vibration
(D) Randomly
Answer: (C)

Electric field lines point –
(A) From negative to positive
(B) From positive to negative
(C) Circular around charge
(D) Opposite to current
Answer: (B)