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प्रश्न
Explain why (or how): Bats can ascertain distances, directions, nature, and sizes of the obstacles without any “eyes”,
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उत्तर १
Bats emit very high-frequency ultrasonic sound waves. These waves get reflected back toward them by obstacles. A bat receives a reflected wave (frequency) and estimates the distance, direction, nature, and size of an obstacle with the help of its brain senses.
उत्तर २
Bats emit ultrasonic waves of high frequency from their mouths. These waves after being reflected back from the obstacles on their path are observed by the bats. These waves give them an idea of distance, direction, nature and size of the obstacles.
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संबंधित प्रश्न
When longitudinal wave is incident at the boundary of denser medium, then............................
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- compression reflects as a rarefaction.
- rarefaction reflects as a compression.
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(a) zero rad
(b) ` pi/2 ` rad
(c) `(3pi)/4` rad
(d) `pi` rad
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An organ pipe, open at both ends, contains
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The phenomenon of beats can take place
