Q. Ondometer is a –

  • (A) Measuring instrument for distance covered by motor wheels
  • (B) Measuring instrument for frequency of electromagnetic waves
  • (C) Device for measuring sound intensity
  • (D) Measuring instrument for electric power
✅ Correct Answer: (B) Measuring instrument for frequency of electromagnetic waves

Published by Ranjeet ⭐ 34.60K Points at 27-Sep-2020 08:01 am in Science

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