Q. What is the formula for the capacitance of a parallel plate capacitor?
  • A. C = εA/d
  • B. C = A/εd
  • C. C = d/εA
  • D. C = εd/A
Q. What is the formula for the total capacitance of two capacitors in parallel?
  • A. C_total = C1 + C2
  • B. C_total = C1 * C2
  • C. C_total = C1 / C2
  • D. C_total = C1 - C2
Q. What is the frequency of a sound wave with a wavelength of 2 meters traveling at 340 m/s?
  • A. 170 Hz
  • B. 340 Hz
  • C. 680 Hz
  • D. 3400 Hz
Q. What is the frequency of an AC signal with a period of 0.02 seconds?
  • A. 50 Hz
  • B. 100 Hz
  • C. 25 Hz
  • D. 200 Hz
Q. What is the function of a capacitor in an electric circuit? (2022)
  • A. Store energy
  • B. Increase current
  • C. Decrease voltage
  • D. Convert AC to DC
Q. What is the latent heat of fusion if 500 g of ice at 0°C absorbs 334,000 J of heat? (2022)
  • A. 334 J/g
  • B. 668 J/g
  • C. 500 J/g
  • D. 1000 J/g
Q. What is the latent heat of fusion of ice if 80 g of ice at 0°C melts to water at 0°C, absorbing 2400 J of heat? (2022)
  • A. 30 J/g
  • B. 40 J/g
  • C. 50 J/g
  • D. 60 J/g
Q. What is the magnetic field around a straight conductor carrying current?
  • A. Uniform
  • B. Concentric circles
  • C. Radial lines
  • D. None of the above
Q. What is the magnetic field around a straight current-carrying conductor? (2023)
  • A. Uniform
  • B. Concentric circles
  • C. Radial lines
  • D. None of the above
Q. What is the magnetic field strength at the center of a circular loop of radius 0.1 m carrying a current of 3 A?
  • A. 0.03 T
  • B. 0.1 T
  • C. 0.15 T
  • D. 0.2 T
Q. What is the magnetic field strength at the center of a circular loop of radius 0.1 m carrying a current of 5 A?
  • A. 0.1 T
  • B. 0.2 T
  • C. 0.5 T
  • D. 1 T
Q. What is the magnetic field strength at the center of a circular loop of radius r carrying a current I?
  • A. μ0I/2r
  • B. μ0I/r
  • C. μ0I/4r
  • D. μ0I/πr
Q. What is the magnification produced by a concave lens if the object is placed at a distance of 30 cm and the focal length of the lens is 15 cm? (2022)
  • A. -0.5
  • B. -1
  • C. -2
  • D. -3
Q. What is the magnification produced by a concave mirror if the object is placed at a distance of 15 cm and the focal length is 5 cm?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. What is the main characteristic of a black body in terms of radiation? (2019)
  • A. Reflects all radiation
  • B. Absorbs all radiation
  • C. Transmits all radiation
  • D. Scatters all radiation
Q. What is the main concept of quantum mechanics that distinguishes it from classical mechanics? (2023)
  • A. Determinism
  • B. Wave-particle duality
  • C. Conservation of energy
  • D. Newton's laws
Q. What is the minimum energy required to remove an electron from a hydrogen atom in its ground state? (Ionization energy = 13.6 eV) (2023)
  • A. 1.6 x 10^-19 J
  • B. 2.18 x 10^-18 J
  • C. 13.6 eV
  • D. 3.2 x 10^-19 J
Q. What is the phenomenon called when sound waves bounce off a surface? (2021)
  • A. Refraction
  • B. Reflection
  • C. Diffraction
  • D. Interference
Q. What is the potential difference across a 10-ohm resistor carrying a current of 3 A?
  • A. 30 V
  • B. 10 V
  • C. 3 V
  • D. 0.3 V
Q. What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)
  • A. 100 J
  • B. 50 J
  • C. 20 J
  • D. 10 J
Q. What is the power consumed by a device that operates at 12 volts and draws a current of 2 amperes? (2020)
  • A. 24 W
  • B. 12 W
  • C. 6 W
  • D. 48 W
Q. What is the power consumed by a device that operates at 120 V and draws a current of 2 A?
  • A. 240 W
  • B. 60 W
  • C. 120 W
  • D. 30 W
Q. What is the power consumed by a device that operates at 120 volts and draws a current of 3 amperes?
  • A. 360 W
  • B. 40 W
  • C. 120 W
  • D. 240 W
Q. What is the power consumed by a device that operates at 120V and draws a current of 3A? (2021)
  • A. 360 W
  • B. 240 W
  • C. 120 W
  • D. 30 W
Q. What is the power consumed by a device that operates at a voltage of 120 volts and draws a current of 3 amperes?
  • A. 360 watts
  • B. 40 watts
  • C. 120 watts
  • D. 240 watts
Q. What is the relationship between the amplitude of a sound wave and its loudness?
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relationship
  • D. Exponential relationship
Q. What is the resistance of a wire of length 2 m and cross-sectional area 1 mm² if the resistivity of the material is 1.7 x 10^-8 Ωm?
  • A. 0.034 Ω
  • B. 0.017 Ω
  • C. 0.068 Ω
  • D. 0.085 Ω
Q. What is the specific heat capacity of a substance if 500 J of heat is required to raise the temperature of 2 kg of the substance by 10°C? (2021)
  • A. 25 J/kg°C
  • B. 50 J/kg°C
  • C. 75 J/kg°C
  • D. 100 J/kg°C
Q. What is the threshold of hearing in decibels?
  • A. 0 dB
  • B. 10 dB
  • C. 20 dB
  • D. 30 dB
Q. What is the total capacitance of two capacitors of 2 µF and 3 µF connected in series? (2023)
  • A. 1.2 µF
  • B. 5 µF
  • C. 6 µF
  • D. 0.86 µF
Showing 181 to 210 of 232 (8 Pages)
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