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Q: Dentists use a concave mirror because the image built on it is ………….
  • A. real and large
  • B. virtual but foggy
  • C. real but invertered
  • D. virtual and large
Correct Answer: Option D - The image on a concave mirror is inverted and real, but if the object placed between the focus and the pole, then the image becomes virtual and large. Hence, dentists use a concave mirror because the image built on it is virtual and large.
D. The image on a concave mirror is inverted and real, but if the object placed between the focus and the pole, then the image becomes virtual and large. Hence, dentists use a concave mirror because the image built on it is virtual and large.

Explanations:

The image on a concave mirror is inverted and real, but if the object placed between the focus and the pole, then the image becomes virtual and large. Hence, dentists use a concave mirror because the image built on it is virtual and large.