Home
Class 11
PHYSICS
Assertion : Since the Root mean square s...

Assertion : Since the Root mean square speed of hydrogen is much leaser than that of nitrogen, it escapes easily from Earth's atmosphere.
Reason : Internal energy of ideal gas. `U=(1)/(2)` NkT.

A

Assertion and Reason are correct and Reason is correct explanation of Assertion

B

Assertion and Reason are true but Reason is the false explanation of the Assertion

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

Text Solution

Verified by Experts

The correct Answer is:
d

Assertion is false but Reason is true
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    SURA PUBLICATION|Exercise CHOOSE THE CORRECT OR INCORRECT STATEMENTS :|4 Videos
  • KINETIC THEORY OF GASES

    SURA PUBLICATION|Exercise VERY SHORT ANSWER QUESTIONS :|15 Videos
  • KINETIC THEORY OF GASES

    SURA PUBLICATION|Exercise CHOOSE THE ODD ONE OUT :|6 Videos
  • KINEMATICS

    SURA PUBLICATION|Exercise Creative Question (HOTS)|12 Videos
  • MOTION OF SYSTEM OF PARTICLES AND RIGID BODIES

    SURA PUBLICATION|Exercise VALUE BASED QUESTIONS|2 Videos

Similar Questions

Explore conceptually related problems

At what temperature the mean speed of the molecules of hydrogen gas equals the escape speed from the earth?

Assertion : When a Rubber band is stretched to a particular length, there is a change in length as well as the elastic potential energy is increased i.e., U=(1)/(2)Kx^(2) Reason : A bullet shot from the gun if embedded in a long of wood. Kinetic Energy is not conserved, but momentum is conserved, but momentum is conserved. The loss in kinetic is Delta theta = K.E_(i)-K.E_(f)

Assertion : The root mean square and most probable speeds of the molecules in a gas are the same. Reason : The maxwell distribution for the speed to molecules in a gas is symmetrical. Which one of the following statement is correct ?

The temperature of an ideal gas is increased from 27@C " to "927@C. The root mean square speed of its molecules becomes.

Find the temperature at which the everage thermal kinetic energy is equal to the energy needed to take a hydrogen atom from its ground state n = 3 state hydrogen can now emit rod light of wavelength 653.1 nm because of maxwellan distribution of speeds a hydrogen sample emits red light at temperature much lower than that obtained from this problem Asuume that hydrogen that hydrogen molecules dissociate into atoms

Fig shows a cylindrical tube of volume V with adiabatic walls containing an ideal gas. The internal energy of this ideal gas is given by 1.5nRT. The tube is divided into two equal parts by a fixed diathermic wall. Initially, the pressure and the temperature are p_(1), T_(1) on the left and p_(2), T_(2) on the right. the system is left for sufficient time so that the temperature becomes equal on the two sides. (a) how much work has been done by the gas on the left part ? (b) find the final pressures on the two sides. (c ) find the final equilibrium temperature. (d) how much heat has flown from the gas on the right to the gas on the left ?

2.00 mole of a monatomic ideal gas (U=1.5nRT) is enclosed in an adiabatic, fixed , vertical cylinder fitted with a smooth, light adiabatic piston. The piston is connected to a vertical spring of spring constant 200 N m^(-1) as shown in .the area of cross section of the cylinder is 20.0 cm^(2) . initially, the spring is at its natural length and the temperature of the gas is 300K at its natural length. the atmosphere pressure is 100 kPa. the gas is heated slowly for some time by means of an electric heater so as to move the position up through 10 cm. find (a) the work done by the gas (b) the final temperature of the gas and (c ) the heat supplied by the heater.

A chamber contains a mixture of helium gas (He) and hydrogen gas (H_(2)) . The ration of the root-mean-square speed of the molecules of He and H_(2) is .............. .