What physical quantity is measured in Joules?

✅ B. Voltmeter

A voltmeter measures potential difference. Read more

✅ B. 9.8 m/s^2

A: 8.9 m/s^2 B: 9.8 m/s^2 C: 10.5 m/s^2 D: 11.2 m/s^2 Read more

✅ C. 3 × 10^8 m/s

Light travels in vacuum at approximately 3 × 10^8 meters per second. Read more

✅ D. Boyle's law

A: Charles's law B: Gay-Lussac's law C: Avogadro's law D: Boyle's law Read more

✅ C. Sound wave

Sound is a mechanical wave and requires a medium. Read more

✅ A. Photoelectric effect

A: Photoelectric effect B: Young's double-slit interference C: Diffraction grating D: Polarization Read more

✅ C. Energy

The joule is the SI unit of energy and work. Read more

✅ D. Energy

A: Power B: Force C: Pressure D: Energy Read more