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प्रश्न
Why do telephone wires sag during summer?
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उत्तर
Telephone wires sag in summer because due to heat of the sun, the wire expands and increases in length, thus they sag in summer.
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संबंधित प्रश्न
Convert – 40°F to the Celsius scale.
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What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?
Do all substances expand on heating? Give examples.
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The mean annual temperature is 25°C around me.
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