In sea, the call of Humpback Whale is audible upto a distance of

20 km

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200 km

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400 km

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800 km

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Solution

The correct option is D 800 km
The humpback whale is a species of baleen whale(a subgroup of a blue whale). One of the larger rorqual species, adults range in length from 12–16 m and weigh around 25–30 metric tons.
Theoretical calculations by Roger Payne and Douglas Webb (from the 1970s) predicted that the loudest humpback whale sounds might be transmitted across an entire ocean. It is much louder than a jet, which reaches only 140 decibels!
In the sea, the call of Humpback Whale is audible up to a distance of 800km.
So, the correct answer is '800Km'.

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