Biology, asked by Karankumar9611, 1 month ago

(a) Why does sound travel faster on a rainy day than on a dry day? (b) Write the use of radioactive isotopes used in industries?

Answers

Answered by poojadahiya5432
0

Explanation:

(a)

Density of water vapour is lesses than that of dry air.

Hence when water vapour is present in air, the density of air is lesser.

On a rainy day, water vapour content in air is more than any other day.

Hence on a rainy day, the density of air is lesser.

Speed of sound in air is inversely proportional to the square root of its density.

Sound travels faster in lighter air than in the heavier one.

On a rainy day sound travel faster than on a dry day.

(b) (i) In industries , radioactive isotopes are used as tracers to detect any manufacturing defects such as cracks and leaks.

(ii) Packaging faults can be identified through radio activity.

(iii) Gauges which have radioactive sources are used in many industries to check the level of gases, liquids and solids.

Hope it helps you.

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