The dimensional formula for thermal resistance is

50% studentsanswered this correctly

Important Questions on Heat Transfer

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Physics>Chapter 16 - Heat Transfer>Exercise (Conceptual Questions)>Q 21

The material used in the manufacture of cooker must have (

K -

coefficient of thermal conductivity,

S -

specific heat of material used):

EASY

NEET

IMPORTANT

Beta Question Bank for Medical: Physics>Chapter 16 - Heat Transfer>Exercise (Conceptual Questions)>Q 22

The cause of air currents from ocean to ground is example of

EASY

NEET

IMPORTANT

Beta Question Bank for Medical: Physics>Chapter 16 - Heat Transfer>Exercise (Conceptual Questions)>Q 23

On a cold morning, a person will feel metal surface colder to touch than a wooden surface because

HARD

NEET

IMPORTANT

Beta Question Bank for Medical: Physics>Chapter 16 - Heat Transfer>Exercise (Conceptual Questions)>Q 24

The ratio of the diameters of two metallic rods of the same material is

2 : 1

and their lengths are in the ratio

1 : 4

. If the temperature difference between their ends are equal and the rate of flow of heat in them will be in the ratio of

\frac{2 α}{1}

then

α =

_____.

EASY

NEET

IMPORTANT

Beta Question Bank for Medical: Physics>Chapter 16 - Heat Transfer>Exercise (Conceptual Questions)>Q 25

Two bars of thermal conductivities K and 3K and lenqths 1 cm and 2 cm respectively have equal cross-sectional area. they are joined length wise as shown in the Figure. If the temperature at the ends of this composite bar is 0ºC and 100°C respectively (see figure), then the temperature of the interface
( $ϕ$ ) is

Question Image