SI unit of electric field is – (A) Newton (B) Volt (C) Volt/meter (D) Ampere/meter Answer: (C)
SI unit of frequency is – (A) Hertz (B) Decibel (C) Newton (D) Tesla Answer: (A)
Which of the following is a vector quantity? (A) Energy (B) Power (C) Displacement (D) Pressure Answer: (C)
The magnetic field due to a circular loop is maximum at – (A) Any point on the loop (B) Center of the loop (C) Outside the loop (D) At infinity Answer: (B)
The total resistance in parallel combination is – (A) Greater than largest resistor (B) Equal to the average (C) Less than smallest resistor (D) Product of all resistors Answer: (C)
SI unit of power is – (A) Watt (B) Newton (C) Volt (D) Ampere Answer: (A)
The second law of thermodynamics deals with – (A) Conservation of momentum (B) Heat transfer direction (C) Energy equivalence (D) Thermal expansion Answer: (B)
Critical angle is defined when light travels from – (A) Low to high refractive index (B) Air to glass (C) High to low refractive index (D) Vacuum to metal Answer: (C)
The force between two parallel current-carrying wires is – (A) Always repulsive (B) Always attractive (C) Zero (D) Depends on direction of currents Answer: (D)
SI unit of luminous intensity is – (A) Lumen (B) Lux (C) Candela (D) Watt Answer: (C)
Temperature is a measure of – (A) Heat (B) Energy stored (C) Average kinetic energy of particles (D) Total energy Answer: (C)
Ohm is the unit of – (A) Capacitance (B) Resistance (C) Inductance (D) Current Answer: (B)
Electric field inside a conductor is – (A) Maximum (B) Zero (C) Equal to potential (D) Infinity Answer: (B)
The shortest wavelength in electromagnetic spectrum is – (A) X-rays (B) Gamma rays (C) UV rays (D) Radio waves Answer: (B)
Boyle’s law states that – (A) Pressure ∝ temperature (B) Pressure × volume = constant (C) Volume ∝ temperature (D) Mass ∝ volume Answer: (B)
A solar cooker works mainly on – (A) Conduction (B) Convection (C) Radiation (D) Reflection Answer: (C)
A convex mirror is also called – (A) Diverging mirror (B) Converging mirror (C) Enlarging mirror (D) Plane mirror Answer: (A)
The SI unit of electric charge is – (A) Volt (B) Ampere (C) Coulomb (D) Tesla Answer: (C)
Angular momentum is conserved when – (A) External torque is zero (B) Force is zero (C) Speed is constant (D) Mass is small Answer: (A)
Gravitational force is always – (A) Repulsive (B) Attractive (C) Zero (D) Magnetic Answer: (B)
A body submerged in a liquid experiences – (A) Upthrust (B) Tension (C) No force (D) Gravity only Answer: (A)
The intensity of sound decreases with – (A) Distance (B) Frequency (C) Amplitude (D) Medium Answer: (A)
A transformer operates only on – (A) DC (B) AC (C) Battery (D) Solar cells Answer: (B)
The most elastic substance is – (A) Steel (B) Rubber (C) Glass (D) Copper Answer: (A)
The SI unit of potential difference is – (A) Ohm (B) Coulomb (C) Volt (D) Ampere Answer: (C)
The direction of magnetic field lines is from – (A) North to South (B) South to North (C) Left to Right (D) Clockwise Answer: (A)
The eye lens is – (A) Concave (B) Convex (C) Plano-convex (D) Cylindrical Answer: (B)
The speed of sound is minimum in – (A) Steel (B) Water (C) Vacuum (D) Air Answer: (C)
The energy of photons is directly proportional to – (A) Wavelength (B) Frequency (C) Velocity (D) Area Answer: (B)
The device to measure atmospheric pressure is – (A) Manometer (B) Barometer (C) Thermometer (D) Potentiometer Answer: (B)
The impedance of an AC circuit is measured in – (A) Ampere (B) Volt (C) Ohm (D) Watt Answer: (C)
A mirror image is – (A) Real and inverted (B) Virtual and erect (C) Virtual and inverted (D) Real and erect Answer: (B)
The SI unit of impulse is – (A) Newton (B) N·s (C) Joule (D) Watt Answer: (B)
The reflection of sound is called – (A) Echo (B) Pitch (C) Refraction (D) Tone Answer: (A)
The unit of work is – (A) Newton (B) Joule (C) Watt (D) Pascal Answer: (B)
The intensity of light is inversely proportional to – (A) Distance (B) Distance² (C) Angle (D) Mass Answer: (B)
Thermal equilibrium is defined by – (A) Newton’s law (B) Zeroth law of thermodynamics (C) First law (D) Pascal’s law Answer: (B)
A charged particle in magnetic field moves in – (A) Straight line (B) Circular/Helical path (C) Parabola (D) Random motion Answer: (B)
A rainbow is formed by – (A) Refraction (B) Reflection (C) Dispersion (D) All of the above Answer: (D)
The speed of light in water is – (A) Greater than in air (B) Same as in air (C) Less than in air (D) Zero Answer: (C)
1 Angstrom is equal to – (A) 10⁻¹⁰ m (B) 10⁻⁹ m (C) 10⁻⁶ m (D) 10⁻³ m Answer: (A)
The boiling point of water decreases with – (A) Pressure (B) Altitude (C) Humidity (D) Temperature Answer: (B)
The unit of dynamic viscosity is – (A) Pascal (B) Poise (C) Newton (D) Joule Answer: (B)
A free body in space will – (A) Stop (B) Accelerate (C) Remain in uniform motion (D) Fall down Answer: (C)
Energy in SHM is – (A) Always potential (B) Always kinetic (C) Alternates between kinetic and potential (D) Constant kinetic Answer: (C)
The number of vibrations per second is called – (A) Frequency (B) Wavelength (C) Pitch (D) Amplitude Answer: (A)
The force per unit charge is – (A) Electric field (B) Potential (C) Work (D) Resistance Answer: (A)
Infrared radiation is also known as – (A) Heat radiation (B) UV (C) Visible (D) Gamma Answer: (A)
Conductors have – (A) High resistance (B) Low resistance (C) Infinite resistance (D) Zero resistance Answer: (B)
Electric current in a wire is due to – (A) Electrons (B) Protons (C) Neutrons (D) Photons Answer: (A)
