Q.41)-When temperature difference between liquid & its surroundings is doubled, the rate of loss of heat will
- Remains same
- Double
- Three times
- Four times
Q.42)-The temperature of a liquid is 320F what is the temperature in celsius scale?
- 320C
- 00C
- 1000C
- 2120C
Q.43)-The temperature at which reading of both fahrenheit scale and celsis scale are same
- 400
- -40
- -340
- -1440
Q.44)-Temperature of distant luminous bodies can be determined by
- Mercury thermometers
- Gas thermometers
- Pyrometers
- Colour thermometers
Q.45)-To measure very high temperature,we use
- Mercury thermometers
- Platinum resistance thermometer
- Thermoelectric pyrometer
- None of these
Q.46)-On a cold day when the room temperature is 150C the metallic cap of a pen becomes much colder than its plastic body though both are at the same temperature of 150C because
- Metals have high thermal capacity than plastics
- Plastics have lower density than metals
- Metals are good conductor of heat
- Plastics have higher thermal conductivity than metals
Q.47)-The minimum temperature is measured by
- Alcohol thermometer
- Thermometer
- Maximum reading thermometer
- Minimum reading thermometer
Q.48)-Temperature inversion is
- Positive lapse rate
- Negative lapse rate
- Neutral condition
- None of these
Q.49)-To produce the low temperature which of the following principle is used
- Super conductivity
- Joule-kelvin effect
- Heading effect of current
- Adiabatic demagnetization process
Q.50)-Absolute zero is defined as the temperature
- At which all molecular motion ceases
- At which water boils at 298K
- At which liquid helium boils
- At which volume becomes zero