- What is the SI unit of momentum?
- A) \text{kg}\cdot\text{m/s}^2
- B) \text{kg}\cdot\text{m/s}
- C) \text{N}\cdot\text{s}^2
- D) \text{J}\cdot\text{s} Correct Answer: B) \text{kg}\cdot\text{m/s}
- Which of the following quantities represents a measure of inertia?
- A) Velocity
- B) Acceleration
- C) Mass
- D) Force Correct Answer: C) Mass
- What is the phenomenon responsible for the working of optical fibres?
- A) Refraction
- B) Interference
- C) Total internal reflection
- D) Diffraction Correct Answer: C) Total internal reflection
- Who discovered radioactivity?
- A) Marie Curie
- B) Henri Becquerel
- C) Ernest Rutherford
- D) J.J. Thomson Correct Answer: B) Henri Becquerel
- Sound waves are an example of which type of wave?
- A) Transverse waves
- B) Longitudinal waves
- C) Electromagnetic waves
- D) Matter waves Correct Answer: B) Longitudinal waves
- What is the net work done on an object when the force applied is perpendicular to its displacement?
- A) Maximum
- B) Minimum
- C) Zero
- D) Negative Correct Answer: C) Zero
- Which device is used to convert mechanical energy into electrical energy?
- A) Electric motor
- B) Transformer
- C) Generator
- D) Rectifier Correct Answer: C) Generator
- What is the SI unit of magnetic flux?
- A) Tesla
- B) Weber
- C) Henry
- D) Gauss Correct Answer: B) Weber
- In which medium does sound travel the fastest?
- A) Vacuum
- B) Air
- C) Water
- D) Steel Correct Answer: D) Steel
- What does the first law of thermodynamics fundamentally conserve?
- A) Momentum
- B) Charge
- C) Energy
- D) Mass Correct Answer: C) Energy
- What is the formula for centripetal acceleration of an object moving in a circle of radius r with speed v?
- A) v/r
- B) v^2/r
- C) v/r^2
- D) vr Correct Answer: B) v^2/r
- Which of the following is an intrinsic semiconductor?
- A) Copper
- B) Silicon
- C) Glass
- D) Wood Correct Answer: B) Silicon
- What is the standard value of atmospheric pressure at sea level?
- A) 1.013 \times 10^3 \text{ Pa}
- B) 1.013 \times 10^4 \text{ Pa}
- C) 1.013 \times 10^5 \text{ Pa}
- D) 1.013 \times 10^6 \text{ Pa} Correct Answer: C) 1.013 \times 10^5 \text{ Pa}
- What type of image is formed by a concave lens for a real object?
- A) Real and inverted
- B) Virtual and erect
- C) Real and erect
- D) Virtual and inverted Correct Answer: B) Virtual and erect
- What law governs the electrostatic force between two point charges?
- A) Ampere's law
- B) Faraday's law
- C) Coulomb's law
- D) Gauss's law Correct Answer: C) Coulomb's law
- What is the SI unit of specific heat capacity?
- A) \text{J/kg}
- B) \text{J/}\text{K}
- C) \text{J}/(\text{kg}\cdot\text{K})
- D) \text{cal/g} Correct Answer: C) \text{J}/(\text{kg}\cdot\text{K})
- Which color has the longest wavelength in the visible spectrum?
- A) Violet
- B) Green
- C) Yellow
- D) Red Correct Answer: D) Red
- What is the particle predominantly responsible for triggering nuclear fission in Uranium-235?
- A) Proton
- B) Neutron
- C) Electron
- D) Alpha particle Correct Answer: B) Neutron
- Which physical quantity is measured in hertz (Hz)?
- A) Amplitude
- B) Wavelength
- C) Frequency
- D) Time period Correct Answer: C) Frequency
- What is the resistance of an ideal voltmeter?
- A) Zero
- B) Very small
- C) Moderate
- D) Infinite Correct Answer: D) Infinite
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