Physics Mcqs Class 9th|Transfer of Heat Mcqs

Physic Mcqs Class 9th | Most Important Physics Mcqs | Physics Mcqs For NTS | Physics Mcqs For Lecturer PPSC |

An example of a bad conductor is:

A. Wool
B. Iron
C. Gold
D. Graphite

What is the Value of thermal conductivity of dry air is _Wm-1K-1

A. 0.03
B. 0.08
C. 0.026
D. 0.2

Which Surface is Bad Emitter?

A. Black Surface
B. Silver Surface
C. White Surface
D. Colored Surface

____ is a good radiator of hearing.

A. A White Surface
B. A Dull Black Surface
C. A Green Coloured Surface
D. A Shining Silver Surface

What is the Reason behind Land breeze and sea breeze?

A. Absorption
B. Radiation
C. Conduction
D. Convection

Name the Birds which are specialists when it comes to Thermal Climbers?

A. Eagle
B. Hawks
C. Vultures
D. All of the Above

False ceiling is done to:

A. Lower the height of Ceiling
B. Cool the room
C. Insulate the Ceiling
D. Keep the Ceiling Clean

The thermal conductivity of Silver is——-Wm-1k-1

A. 105
B. 400
C. 205
D. 430

Thermal conductivity is directly proportional to:

A. Time
B. Temperature
C. Area
D. Length of Conductor

The thermal conductivity of rubber is:

A. 1.7 Wm-1K-1
B. 0.08 Wm-1K-1
C. 0.2  Wm-1K-1
D. 0.59 Wm-1K-1

When Heat is transferred through fluids this method is known as:

A. Radiation
B. Convection
C. Absorption
D. Conduction

The surfaces of Leslie’s Cube are:

A. 4
B. 2
C. 8
D. 6

The worst absorber of heat is:

A. Dull Black Surface
B. Shining Silver Surface
C. White Surface
D. Coloured Surface

Poor conductor of heat is:

A. Aluminum
B. Iron
C. Copper
D. Water

In gases, heat is mainly transferred by:

A. Conduction
B. Radiation
C. Molecular Collision
D. Convection

The Major Source of Heat Energy is:

A. Nuclear Fuels
B. Earth
C. Sun
D. Moon

How many ways from which heat transfer can be take place?

A. 1
B. 3
C. 2
D. 4

If we double the thickness of the wall what happens to the thermal conductivity?

A. Becomes Half
B. Becomes Double
C. Becomes on Fourth
D. Remain Same

In solid, heat is transferred by:

A. Radiation
B. Convection
C. Absorption
D. Conductive

Rooms are heated using gas heaters by_____

A. Radiation
B. Conduction
C. Convection
D. Convection and Radiation

The Reason of Glider tore main in the air is:

A. Radiation
B. Convection
C. Conduction
D. Power

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