Q. Choose the word which is different from the rest: Microscope, Telescope, Periscope, Stethoscope

  • (A) Microscope
  • (B) Telescope
  • (C) Periscope
  • (D) Stethoscope
βœ… Correct Answer: (D) Stethoscope
Explanation: All except Stethoscope are optical instruments.
Explanation by: Yatendra Sir
All except Stethoscope are optical instruments.

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