Question

1. A bimetallic strip is used as a thermostat in the electrical device named …………….. (electric bulb, T.V., refrigerator).2. Melting point of 1 kg wax will be …………….. the melting point of 2 kg wax
(double, half, same as).
3. Latent heat of evaporation is measured in …………….. (J, J/K, J/kg).
4. 1 kg steam at 100 °C has 2260 J …………….. heat than water at 100 °C
(more, less).
5. The cubical expansivity of a substance is …………….. its linear expansivity
(equal to, two times, three times)
6. The expansivity of …………….. is maximum. (solids, liquids, gases).

Answer 1

Answer:

1.electric bulb.

2.double.

3.J.

4.more.

5.equal to.

6.solids.

Answer 2

Explanation:

1. A bimetallic strip is used as a thermostat in the electrical device named an electric bulb.

2. Melting point of 1 kg wax will be double the melting point of 2 kg wax

3. Latent heat of evaporation is measured in J/kg

4. 1 kg steam at 100 °C has 2260 J more heat than water at 100 °C

.5. The cubical expansivity of a substance is two times its linear expansivity

6. The expansivity of solids is maximum. (solids, liquids, gases).