Physics-Heat Transfer

Test Preparation on Physics-Heat Transfer

1.

If the wavelength of maximum intensity of radiation emitted by sun and moon is 0.5 x 10"6 m and 10"4 respectively, the ratio of their temperatures is :

110000
22001100
3100
4200

2.

A red glass piece is heated until it glows in dark. The color of the glow will be :

1red
2orange
3green
4violet

3.

An object is at temperature of 400

1200
2200 K
3800
4800 K

4.

The maximum wavelength of radiation emitted at 200 Kis 4 pm what will be the maximum wavelength ofradiation emitted at 2400 K ?

13.33 pm
20.66 pm
31 pm
41 m

5.

For the measurement of temperature of the order of400

1Hg thermometer
2alcohol thermometer
3radiation thermometer
4thermocouple

6.

For measuring temperature near absolute zero thethermometer used is:

1thermoelectric thermometer
2radiation thermometer
3magnetic thermometer
4resistance thermometer

7.

The mode of transfer of heat which requires no medium,is called as :

1radiation
2conduction
3combusion
4convection

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