Sound Travels at 340 M/s in Air and 1500 M/s

question 96

Multiple Choice

Sound travels at 340 m/s in air and 1500 m/s in water.A sound of 256 Hz is made under water.In the air,

• A)the frequency remains the same but the wavelength is shorter.
• B)the frequency is higher but the wavelength stays the same.
• C)the frequency is lower but the wavelength is longer.
• D)the frequency is lower and the wavelength is shorter.
• E)both the frequency and the wavelength remain the same.

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Definitions:

Introns

Non-coding sections of DNA or RNA that are removed before the final mRNA is formed in eukaryotic cells.

Nucleotide Sequences

The order of nucleotides in a DNA or RNA molecule that determines genetic information.

Double-stranded DNA

The normal form of DNA, consisting of two parallel strands of nucleotides wound around each other in a helix.

RNA Molecule

A nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.