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प्रश्न
Define coefficient of linear expansion.
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उत्तर
Coefficient of Linear expansion is equal to the change in length of a rod of length 1m when its temperature rises by 1°C.
संबंधित प्रश्न
Write down the temperature of the lower fixed point on the Fahrenheit scale.
The temperature rises by 18°F. What is the rise on the Celsius scale?
Who is telling the truth?
Heat flows from an object at higher temperature to an object at lower temperature.
Give a scientific reason for the following:
On a hot sunny day, it is advisable to wear light coloured clothes.
The following figure shows a copper washer. Explain, giving reasons, whether the following characteristics of the washer increase, decrease, or remain the same when it is heated.
(a) Internal diameter
(b) Volume
(c) Mass
(d) Density
(e) External diameter
Who am I?
I get heated due to the land or water near me
Temperature of Srinagar (J&K) is -4°C and in Kodaikanal is 3°C which of them has greater temperature? What is the difference between the temperatures of these two places?
Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.
Reason: Boiling point of water is 10°C.
Give reasons why –
chimneys are located high up in kitchens and factories
