NDA PHYSICS QUIZ - 14

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Question 1:

The first law of thermodynamics is simply the case of-

Question 2:

Which of the following substances has greatest specific heat?

Question 3:

Transmission of heat in solids takes place through –

Question 4:

An electric iron of resistance 20 ohms draws a current of 5 amperes. Calculate the heat produced in 30 seconds.

Question 5:

Centigrade and Fahrenheit temperatures are same at –

Question 6:

100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor ?

Question 7:

The normal temperature of human body is -

Question 8:

What precaution should be taken when using a laboratory thermometer?

Question 9:

The absolute zero on Celsius scale is-

Question 10:

Thermometer is based on the principle of –