Multiple choice

Mr. Arun and Mr. Varun were sitting in their veranda late one evening. Suddenly their dog sat up, focussed its ears keenly and started barking loudly. But both of them observe that nothing is wrong. What could be the reason for this?

  1. Higher temperature on that day caused it.

  2. The dog was sick.

  3. It had seen a ghost.

  4. Dogs can hear sounds above the audible frequency of human ear.

  5. Winds had distracted the dog.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dogs can hear sounds above 20,000 Hertz. The sound was not heard by the men as it is above our audible frequency.

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