Radiation MCQ Tests
9th Class Physics MCQ Tests
Radiation
of 9th Class Physics has 5 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 5
Total Marks: 5
Time: 5 Mins
Total Questions: 5
Total Marks: 5
Time: 5 Mins
5Min : 00 Sec Remaining
Question # 1
Why a glass of chilled water becomes hot after sometime, when the temperature of chilled water glass is lower than the surroundings?
Heat always passes from a warmer object to a cooler object until all objects are the same temperature.
Question # 2
How heat reaches us directly from a fireplace?
Question # 3
Which of the following factors effect the rate of transfer of energy in radiation?
Radiation is the mode of transfer of heat from one place to another in the form of electromagnetic waves.
Question # 4
2 identical metal plates are painted, one matt (dull) white and the other matt black. These are placed at equal distances from a radiant heater, which is turned on for 5 minutes. Which metal plate absorbs more energy and which plate emits more energy in this time?
Question # 5
How are rooms heated by using gas heaters?
Conduction occurs in solids (it is the process of transfer of heat through collisions of body particles,i.e., direct contact), whereas convection occurs in liquids and gases (actual motion of matter)
Total Questions
12345
Question # 1
Why a glass of chilled water becomes hot after sometime, when the temperature of chilled water glass is lower than the surroundings?
Heat always passes from a warmer object to a cooler object until all objects are the same temperature.
Question # 2
How heat reaches us directly from a fireplace?
Question # 3
Which of the following factors effect the rate of transfer of energy in radiation?
Radiation is the mode of transfer of heat from one place to another in the form of electromagnetic waves.
Question # 4
2 identical metal plates are painted, one matt (dull) white and the other matt black. These are placed at equal distances from a radiant heater, which is turned on for 5 minutes. Which metal plate absorbs more energy and which plate emits more energy in this time?
Question # 5
How are rooms heated by using gas heaters?
Conduction occurs in solids (it is the process of transfer of heat through collisions of body particles,i.e., direct contact), whereas convection occurs in liquids and gases (actual motion of matter)
Total Questions
12345
Physics
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Updated on: 06-05-2026
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