1. Choose the correct answer.Sound can travel through(a) gases only(c)

1.	1. Choose the correct answer.Sound can travel through(a) gases only(c) liquids only(b) solids only(d) solids, liquids and gases.Voice of which of the following is likely to have minimum frequency(a) Baby girl(c) A man2.(b) Baby boy(d) A woman
Answer» 1)dSound waves need to travel through a medium such as solids, liquids and gases. The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Liquids are not packed as tightly. And gases are very loosely packed. This enables sound to travel much faster through a solid than a gas. 2)cThe voice of an adult man is of lower pitch in comparison to the voices of a baby boy, a baby girl and a woman. Since frequency of a sound is directly proportional to its pitch, man’s voice is of minimum frequency in comparison to a boy, a girl, or awoman’s voice 1.d(solid,liquids and gases)2.c Thank you

1. Choose the correct answer.Sound can travel through(a) gases only(c) liquids only(b) solids only(d) solids, liquids and gases.Voice of which of the following is likely to have minimum frequency(a) Baby girl(c) A man2.(b) Baby boy(d) A woman

Answer»

1)dSound waves need to travel through a medium such as solids, liquids and gases. The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Liquids are not packed as tightly. And gases are very loosely packed. This enables sound to travel much faster through a solid than a gas.

2)cThe voice of an adult man is of lower pitch in comparison to the voices of a baby boy, a baby girl and a woman. Since frequency of a sound is directly proportional to its pitch, man’s voice is of minimum frequency in comparison to a boy, a girl, or awoman’s voice

1.d(solid,liquids and gases)2.c

Thank you

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