AIEEE 2007 | Heat and Thermodynamics Question 418 | Physics

When a system is taken from state $$i$$ to state $$f$$ along the path iaf, it is found that $$Q=50$$ cal and $$W=20$$ $$cal$$. Along the path $$ibf$$ $$Q=36$$ $$cal.$$ $$W$$ along the path $$ibf$$ is AIEEE 2007 Physics - Heat and Thermodynamics Question 402 English

AIEEE 2007 Physics - Heat and Thermodynamics Question 402 English

$$14$$ $$cal$$

$$6$$ $$cal$$

$$16$$ $$cal$$

$$66$$ $$cal$$

AIEEE 2007

MCQ (Single Correct Answer)

-1

Out of Syllabus

A Carnot engine, having an efficiency of $$\eta = 1/10$$ as heat engine, is used as a refrigerator . If the work done on the system is $$10$$ $$J$$, the amount of energy absorbed from the reservoir at lower temperature is

$$100$$ $$J$$

$$99$$ $$J$$

$$90$$ $$J$$

$$1$$ $$J$$

AIEEE 2007

MCQ (Single Correct Answer)

-1

If $${C_p}$$ and $${C_v}$$ denote the specific heats of nitrogen per unit mass at constant pressure and constant volume respectively, then

$${C_p} - {C_v} = 28R$$

$${C_p} - {C_v} = R/28$$

$${C_p} - {C_v} = R/14$$

$${C_p} - {C_v} = R$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

Assuming the Sun to be a spherical body of radius $$R$$ at a temperature of $$TK$$, evaluate the total radiant powered incident of Earth at a distance $$r$$ from the Sun

Where r₀ is the radius of the Earth and $$\sigma $$ is Stefan's constant.

$$4\pi r_0^2{R^2}\sigma {{{T^4}} \over {{r^2}}}$$

$$\pi r_0^2{R^2}\sigma {{{T^4}} \over {{r^2}}}$$

$$r_0^2{R^2}\sigma {{{T^4}} \over {4\pi {r^2}}}$$

$${R^2}\sigma {{{T^4}} \over {{r^2}}}$$

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