JEE Main 2021 (Online) 24th February Evening Shift | Heat and Thermodynamics Question 158 | Physics

JEE Main 2021 (Online) 24th February Evening Shift

Numerical

-1

The root mean square speed of molecules of a given mass of a gas at 27$$^\circ$$C and 1 atmosphere pressure is 200 ms^$$-$$1. The root mean square speed of molecules of the gas at 127$$^\circ$$C and 2 atmosphere pressure is $${{x \over {\sqrt 3 }}}$$ ms^$$-$$1. The value of x will be _________.

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JEE Main 2020 (Online) 6th September Evening Slot

Numerical

-0

An engine operates by taking a monoatomic ideal gas through the cycle shown in the figure. The percentage efficiency of the engine is close to __________. JEE Main 2020 (Online) 6th September Evening Slot Physics - Heat and Thermodynamics Question 162 English

JEE Main 2020 (Online) 6th September Evening Slot Physics - Heat and Thermodynamics Question 162 English

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JEE Main 2020 (Online) 6th September Morning Slot

Numerical

-0

Initially a gas of diatomic molecules is contained in a cylinder of volume V₁ at a pressure P₁ and temperature 250 K. Assuming that 25% of the molecules get dissociated causing a change in number of moles. The pressure of the resulting gas at temperature 2000 K, when contained in a volume 2V₁ is given by P₂ . The ratio $${{{P_2}} \over {{P_1}}}$$ is ________.

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JEE Main 2020 (Online) 6th September Morning Slot

Numerical

-0

A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1A and it is decreasing at a rate
of 10² A s^–1. The value of the potential difference V_P – V_Q , (in volts) at that instant, is _________.

JEE Main 2020 (Online) 6th September Morning Slot Physics - Heat and Thermodynamics Question 165 English