According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

The total radiation from a black body per second per unit area is ________ fourth power of the absolute temperature. This statement is known as Stefan Boltzmann law.

A

Equal to

B

Directly proportional to

C

Inversely proportional to

D

None of these

According to Stefan's law, the total radiation from a black body per second per unit area is proportional to

A

Absolute temperature

B

T²

C

T⁵

D

T

Consider the following statements: 1. If x is directly proportional to z and y is directly proportional to z, then (x2 - y2) is directly proportional to z2. 2. If x is inversely proportional to z and y is inversely proportional to z, then (xy) is inversely proportional to z2. Which of the above statements is/are correct?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

How is the degree of emulsion polymerization related to the monomer concentration, and the rate of radical generation, Ri? , inversely proportional to Ri b) inversely proportional to Ri, directly proportional to . c) directly proportional to Ri, independent of . d) directly proportional to , independent of Ri

A

and the rate of radical generation, Ri? ] directly proportional to , inversely proportional to Ri

B

M

C

M

D

M

According to Stefan’s law, the radiant energy emitted by a black body is directly proportional to which power of its absolute temperature?

A

Second power

B

Third power

C

Fourth power

D

Sixth power

Are these statements about the thermal radiation true? Statement 1: It follows Stefan-Boltzmann Law. Statement 2: It also depends on Wien’s Displacement Law.

A

True, False

B

True, True

C

False, True

D

False, False

According to Stefan-Boltzmann law of thermal radiation

A

q = α A T

B

q = α A T4

C

q = α A T3

D

q = α A T5

According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to

A

Absolute temperature

B

Square of temperature

C

Fourth power of absolute temperature

D

Fourth power of temperature

When Stefan-Boltzmann law is applied to a black body, it takes the form

A

E = σ T

B

E = σ T 2

C

E = σ T 3

D

E = σ T 4

Martinez (1984) made a list of possible double-stranded regions, and these regions were then given weights in proportion to their equilibrium constants, calculated by ______ b) the Boltzmann function c) the Boltzmann function d) the Boltzmann function

A

the Boltzmann function

B

exp (-∆G/RT2)

C

exp (-∆G/RT2)

D

exp (-∆G/RT2)

According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

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