AIEEE 2005 | Heat and Thermodynamics Question 462 | Physics

The figure shows a system of two concentric spheres of radii $${r_1}$$ and $${r_2}$$ are kept at temperatures $${T_1}$$ and $${T_2}$$, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to AIEEE 2005 Physics - Heat and Thermodynamics Question 442 English

AIEEE 2005 Physics - Heat and Thermodynamics Question 442 English

$$In\left( {{{{r_2}} \over {{r_1}}}} \right)$$

$${{\left( {{r_2} - {r_1}} \right)} \over {\left( {{r_1}{r_2}} \right)}}$$

$${\left( {{r_2} - {r_1}} \right)}$$

$${{{r_1}{r_2}} \over {\left( {{r_2} - {r_1}} \right)}}$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A gaseous mixture consists of $$16$$ $$g$$ of helium and $$16$$ $$g$$ of oxygen. The ratio $${{Cp} \over {{C_v}}}$$ of the mixture is

$$1.62$$

$$1.59$$

$$1.54$$

$$1.4$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is AIEEE 2005 Physics - Heat and Thermodynamics Question 440 English

AIEEE 2005 Physics - Heat and Thermodynamics Question 440 English

$${1 \over 4}$$

$${1 \over 2}$$

$${2 \over 3}$$

$${1 \over 3}$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

If the temperature of the sun were to increase from $$T$$ to $$2T$$ and its radius from $$R$$ to $$2R$$, then the ratio of the radiant energy received on earth to what it was previously will be

$$32$$

$$16$$

$$4$$

$$64$$

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