- What is the SI unit of electric current?
- A) Volt
- B) Ampere
- C) Ohm
- D) Watt Correct Answer: B) Ampere
- Which of the following is a scalar quantity?
- A) Velocity
- B) Force
- C) Speed
- D) Acceleration Correct Answer: C) Speed
- What is the acceleration due to gravity on the surface of the Earth approximately?
- A) 9.8 \text{ m/s}^2
- B) 8.9 \text{ m/s}^2
- C) 10.8 \text{ m/s}^2
- D) 9.0 \text{ m/s}^2 Correct Answer: A) 9.8 \text{ m/s}^2
- Which law states that pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid?
- A) Archimedes' principle
- B) Pascal's law
- C) Bernoulli's principle
- D) Stokes' law Correct Answer: B) Pascal's law
- What is the frequency of standard alternating current (AC) in India?
- A) 60 Hz
- B) 100 Hz
- C) 50 Hz
- D) 120 Hz Correct Answer: C) 50 Hz
- Which phenomenon is responsible for the twinkling of stars?
- A) Reflection
- B) Total internal reflection
- C) Atmospheric refraction
- D) Dispersion Correct Answer: C) Atmospheric refraction
- What is the energy possessed by a body due to its position or configuration called?
- A) Kinetic energy
- B) Potential energy
- C) Thermal energy
- D) Chemical energy Correct Answer: B) Potential energy
- Who formulated the laws of motion?
- A) Albert Einstein
- B) Isaac Newton
- C) Galileo Galilei
- D) Johannes Kepler Correct Answer: B) Isaac Newton
- What is the device used to measure electric current in a circuit?
- A) Voltmeter
- B) Galvanometer
- C) Ammeter
- D) Rheostat Correct Answer: C) Ammeter
- Which type of mirror is commonly used as a rear-view mirror in vehicles?
- A) Plane mirror
- B) Concave mirror
- C) Convex mirror
- D) Cylindrical mirror Correct Answer: C) Convex mirror
- What is the unit of work and energy in the SI system?
- A) Watt
- B) Joule
- C) Pascal
- D) Newton Correct Answer: B) Joule
- Which colour of light deviates the least when passing through a prism?
- A) Violet
- B) Green
- C) Blue
- D) Red Correct Answer: D) Red
- What is the absolute zero temperature on the Kelvin scale?
- A) 0 K
- B) 273 K
- C) -273 K
- D) 100 K Correct Answer: A) 0 K
- What type of lens is used to correct myopia (short-sightedness)?
- A) Convex lens
- B) Concave lens
- C) Cylindrical lens
- D) Bifocal lens Correct Answer: B) Concave lens
- What is the dimensional formula for force?
- A) [MLT^{-2}]
- B) [ML^2T^{-2}]
- C) [MLT^{-1}]
- D) [ML^{-1}T^{-2}] Correct Answer: A) [MLT^{-2}]
- Which wave requires a material medium for its propagation?
- A) Light waves
- B) Radio waves
- C) Sound waves
- D) X-rays Correct Answer: C) Sound waves
- What is the rate of flow of electric charge called?
- A) Potential difference
- B) Electric resistance
- C) Electric current
- D) Power Correct Answer: C) Electric current
- What is the escape velocity of an object from the Earth's surface approximately?
- A) 5.2 \text{ km/s}
- B) 11.2 \text{ km/s}
- C) 21.4 \text{ km/s}
- D) 3.1 \text{ km/s} Correct Answer: B) 11.2 \text{ km/s}
- Which subatomic particle has a negative charge?
- A) Proton
- B) Neutron
- C) Electron
- D) Positron Correct Answer: C) Electron
- What is the SI unit of power?
- A) Joule
- B) Newton
- C) Watt
- D) Coulomb Correct Answer: C) Watt
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