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Q: Who was the first person to obtain a spectrum by passing light through a prism?
  • A. Paul Villard
  • B. Benjamin Franklin
  • C. Isaac Newton
  • D. Pierre Curie
Correct Answer: Option C - When a beam of white light is passed through prism, a spectrum of seven constituent colours would appear, this phenomenon is known as dispersion of light. This was the first observed by Sir Issac Newton.
C. When a beam of white light is passed through prism, a spectrum of seven constituent colours would appear, this phenomenon is known as dispersion of light. This was the first observed by Sir Issac Newton.

Explanations:

When a beam of white light is passed through prism, a spectrum of seven constituent colours would appear, this phenomenon is known as dispersion of light. This was the first observed by Sir Issac Newton.