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MHT CET202123 Sep 2021Evening ShiftPhysicsRotational MotionActual

A molecule consists of two atoms each of mass ' m ' and separated by a distance ' d '. At room temperature, if the average rotational kinetic energy is ' E ' then the angular frequency is

Options

  1. A2 ~d E m
  2. Bd 2 m E
  3. CEd m
  4. Dm Ed

Correct answer

A. 2 ~d E m

Step-by-step solution

aligned & E= 1 2 I ^2 & I=2 m ( d 2 )^2= m^2 2 & E= 1 2 m^2 2 ^2= m^2 4 ^2 & ^2= 4 E m d^2 & = 2 d E m aligned

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