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Heat & Light Quiz MCQ Practice

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1. The SI unit of temperature is the:

  1. A. Kelvin
  2. B. Fahrenheit
  3. C. Joule
  4. D. Celsius
Answer: Kelvin
Explanation: Kelvin — verified fact for Heat & Light Quiz.

2. The speed of light in vacuum is approximately:

  1. A. 3 × 10^10 m/s
  2. B. 3 × 10^4 m/s
  3. C. 3 × 10^8 m/s
  4. D. 3 × 10^6 m/s
Answer: 3 × 10^8 m/s
Explanation: 3 × 10^8 m/s — verified fact for Heat & Light Quiz.

3. The bending of light as it passes from one medium to another is called:

  1. A. Polarization
  2. B. Refraction
  3. C. Reflection
  4. D. Diffraction only
Answer: Refraction
Explanation: Refraction — verified fact for Heat & Light Quiz.

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