Unit 9 Array Physics 9th Class Punjab MCQ Tests
9th Class Physics Unit 9 MCQ Tests
Unit 9 of 9th Class Physics has 29 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: 29
Total Marks: 29
Time: 30 Mins
Total Questions: 29
Total Marks: 29
Time: 30 Mins
30Min : 00 Sec Remaining
Question # 1
Eagles fly without flapping their wings due to
Question # 2
Which of the following factors effect the rate of transfer of energy in radiation?
Question # 3
The rate of emission of radiation depends on
Question # 4
An electrical heater is placed in a beaker of cold oil as shown in image, then the heater is switched on. What happens to the liquid at X?
Question # 5
Wood, cork, cotton, rubber, glass etc. are
Question # 6
Why are metals good conductors of heat?
Question # 7
Density changes are responsible for which method of thermal energy transfer?
Question # 8
What happens to the thermal conductivity of a wall if its thickness is doubled?
Question # 9
Which of the following statements about copper explains that why it is a better conductor of heat than glass?
Question # 10
Which of the following factors effect the rate of transfer of energy in radiation?
Question # 11
How does the process of heat transfer through convection occur in gases?
Question # 12
Heat from the fireplace reaches us directly in the form of waves called
Question # 13
Water at the top of a hot-water tank is heated and the water becomes hot. No water enters or leaves the tank. Water at the bottom of the tank stays cold for some time. What is the reason behind this?
On heating, the hot and less dense water remains at the top and no convection current occurs.
Question # 14
The movement of cold air from the sea towards the land is called
Question # 15
How is heat transferred in gases?
Question # 16
Which of the following statements is false about green house effect?
Question # 17
How heat reaches us from the Sun?
Question # 18
Which of the following is an example of green house effect?
Question # 19
If the length between the hot and cold ends of the solid is larger, the rate of flow of heat will be
Question # 20
The thermal conductivity of plastic foam is
Question # 21
Like light rays, heat radiations also obey
Question # 22
How are rooms heated by using gas heaters?
Question # 23
Why conduction of heat doesn\'t take place in gases?
Question # 24
How does global warming effects sea levels?
Question # 25
Why conduction of heat doesn\'t take place in gases?
Question # 26
When quick transfer of heat is required through a body, we use
Question # 27
The amount of heat absorbed by a body depends upon the
Question # 28
Which of the following statements is false about green house effect?
Question # 29
How is heat transferred in solids?
Total Questions
1234567891011121314151617181920212223242526272829
Question # 1
Eagles fly without flapping their wings due to
Question # 2
Which of the following factors effect the rate of transfer of energy in radiation?
Question # 3
The rate of emission of radiation depends on
Question # 4
An electrical heater is placed in a beaker of cold oil as shown in image, then the heater is switched on. What happens to the liquid at X?
Question # 5
Wood, cork, cotton, rubber, glass etc. are
Question # 6
Why are metals good conductors of heat?
Question # 7
Density changes are responsible for which method of thermal energy transfer?
Question # 8
What happens to the thermal conductivity of a wall if its thickness is doubled?
Question # 9
Which of the following statements about copper explains that why it is a better conductor of heat than glass?
Question # 10
Which of the following factors effect the rate of transfer of energy in radiation?
Question # 11
How does the process of heat transfer through convection occur in gases?
Question # 12
Heat from the fireplace reaches us directly in the form of waves called
Question # 13
Water at the top of a hot-water tank is heated and the water becomes hot. No water enters or leaves the tank. Water at the bottom of the tank stays cold for some time. What is the reason behind this?
On heating, the hot and less dense water remains at the top and no convection current occurs.
Question # 14
The movement of cold air from the sea towards the land is called
Question # 15
How is heat transferred in gases?
Question # 16
Which of the following statements is false about green house effect?
Question # 17
How heat reaches us from the Sun?
Question # 18
Which of the following is an example of green house effect?
Question # 19
If the length between the hot and cold ends of the solid is larger, the rate of flow of heat will be
Question # 20
The thermal conductivity of plastic foam is
Question # 21
Like light rays, heat radiations also obey
Question # 22
How are rooms heated by using gas heaters?
Question # 23
Why conduction of heat doesn\'t take place in gases?
Question # 24
How does global warming effects sea levels?
Question # 25
Why conduction of heat doesn\'t take place in gases?
Question # 26
When quick transfer of heat is required through a body, we use
Question # 27
The amount of heat absorbed by a body depends upon the
Question # 28
Which of the following statements is false about green house effect?
Question # 29
How is heat transferred in solids?
Total Questions
1234567891011121314151617181920212223242526272829
Physics MCQ Test by Topics
- +9.1 Transfer of Heat
- +9.2 Conduction
- +9.2 Thermal Conductivity
- +9.2 Cross-Sectional Area of Solid
- +9.2 Length of the Solid
- +9.2 Temperature Difference Between Ends
- +9.2 Uses of Conductors and Non-conductors
- +9.3 Convection
- +9.3 Convection Current in Air
- +9.3 Uses of Convection Currents
- +9.3 Land and Sea Breezes
- +9.3 Gliding
- +9.4 Radiation
- +9.4 Emission and Absorption of Radiation
- +9.4 Green House Effect
- +9.5 CONDUCTORS
Physics
9th Class Online Classes 2026
Updated on: 17-05-2026
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