alleryWhich of the following animals can produce ultrasound?
AMoths
BSharks
CElephants
DPorpoises
Answer & Solution
Correct answer: D. Porpoises
1. Ultrasound is sound of frequency above the human hearing limit.
2. Porpoises, like dolphins, produce ultrasonic clicks for echolocation.
3. Hence porpoises can produce ultrasound.
_Source: RRB Group D CEN-02/2018 PYQ, Q.84._
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