WB JEE 2016 | Heat and Thermodynamics Question 37 | Physics

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WB JEE 2016

MCQ (Single Correct Answer)

-0.25

The perfect gas equation for 4g of hydrogen gas is

pv = RT

pv = 2RT

pv = $${1 \over 2}$$ RT

pV = 4RT

WB JEE 2016

MCQ (Single Correct Answer)

-0.25

If the temperature of the Sun gets doubled, the rate of energy received on the Earth will increase by a factor of

WB JEE 2016

MCQ (Single Correct Answer)

-0.25

If the rms velocity of hydrogen gas at a certain temperature is c, then the rms velocity of oxygen gas at the same temperature is

$${c \over 8}$$

$${c \over 10}$$

$${c \over 4}$$

$${c \over 2}$$

WB JEE 2016

MCQ (Single Correct Answer)

-0.25

The temperature of the water of a pond is 0$$^\circ$$C while that of the surrounding atmosphere is $$-$$20$$^\circ$$C. If the density of ice is $$\rho$$, coefficient of thermal conductivity is k and latent heat of melting is L, then the thickness Z of ice layer formed increases as a function of time t is

$${Z^2} = {{60k} \over {\rho L}}t$$

$$Z = \sqrt {{{40k} \over {\rho L}}} t$$

$${Z^2} = {{40k} \over {\rho L}}\sqrt t $$

$${Z^2} = {{40k} \over {\rho L}}t$$

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