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प्रश्न
Who am I?
I am useful for measuring the correct temperature.
उत्तर
Thermometer
संबंधित प्रश्न
Who is telling the truth?
The temperature of a substance is measured in joules.
What is heat ? Write its S.I. unit.
Name two substances which expand on heating.
Draw a diagram showing the temperature of various layers of water in an ice covered pond.
Who am I?
I make things hot or cold.
A body absorbs 1680 J of heat energy. How many calories of heat is absorbed by the body?
Explain, why are the taps left dripping in sub-zero temperatures during winter?
What causes a change in the temperature of a body?
State three factors affecting evaporation.
What is the unit of coefficient of volume expansion?
State three main characteristics of a thermometric substance.
Give a scientific reason for the following:
In winter the birds fluff up their feathers.
Give a scientific reason for the following:
On a hot sunny day, it is advisable to wear light coloured clothes.
What makes the isotherms run zigzag over continental areas?
State whether true or false. If false, correct the statement.
One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K.
