The grandparents and parents of a two-year-old girl are playing with her in a room. A sound source produces a $28 k H z$ sound. Who in the room is most likely to hear the sound?

Grandparent

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Little girl

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Both

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None of them

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Solution

The correct option is B Little girl
The frequency range of hearing in infants is more than in adults. As the infant gets mature, this range decreases. So two-year girl will be more likely to hear that sound.

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The grandparents and parents of a two-year-old girl are playing with her in a room. A sound source produces a 28 kHz sound. Who in the room is most likely to hear the sound?

The correct option is B Little girlThe frequency range of hearing in infants is more than in adults. As the infant gets mature, this range decreases. So two-year girl will be more likely to hear that sound.

The grandparents and parents of a two-year-old girl are playing with her in a room. A sound source produces a $28 k H z$ sound. Who in the room is most likely to hear the sound?

The correct option is B Little girl
The frequency range of hearing in infants is more than in adults. As the infant gets mature, this range decreases. So two-year girl will be more likely to hear that sound.