Q.1
The object with more rotational inertia needs more torque to move than object with lower inertia?
  • True
  • False
Q.2
What is the angular acceleration of an object that has rotational inertia of 4 kg.m2 and submitted to a torque of 8 N.m?
  • 0.5 rad/s2
  • 2 rad/s2
  • 4 rad/s2
  • 8 rad/s2
Q.3
If the same torque is applied on a hoop (I=MRand a solid disk (I=1/2MR2), afterwhich object will be moving faster?
  • Hoop
  • Solid Disk
Q.4
The value of torque depends on the rotation axis and the _______________________
  • magnitude of applied force.
  • mass of object
  • moment inertia of object
  • shape of object
Q.5
Torque can be positive or negative.
  • True
  • False
Q.6
From the rotational microwave spectrum of 1H35Cl, we find that B = 10.cm-1 . Given that the masses ofandCl are 1.and 34.amu, respectively, determine the bond length of the 1H35Cl molecule
  • 1.274 x 10-10 m
  • 1.674 x 10-10 m
  • 1.474 x 10-10 m
  • 1.0274 x 10-10 m
Q.7
__________ (ω)– the rate at which a body rotates about an axis (radians per second)
  • linear speed
  • rotational speed
  • angular speed
  • velocity
Q.8
The microwave active molecules are
  • HCl, OCS
  • CO,CO2
  • Both a) and b)
  • None of the above
Q.9
Conditions for equilibrium are:1st condition: net force = 02nd condition:net torque = 0
  • True
  • False
Q.10
Which of the following molecule has no rotational spectrum?
  • NH3
  • HCl
  • N2
  • H2O.
Q.11
Calculate the moment of inertia, I, of the molecule 1H35Cl. The masses of the two atoms are mH = 1.xkg and mCl = 5.xkg. The equilibrium bond length of the molecule is 1.Å.
  • 2.644 x 1047 kg m2
  • 2.644 x 1027 kg m2
  • 2.644 x 1044 kg m2
  • 2.644 x 1024 kg m2
Q.12
The photon described in Question 3 lies within which part of the electromagnetic spectrum?
  • Radio wave
  • Visible
  • Infrared
  • Ultraviolet
Q.13
The energy in joules of a photon of wavelengthnm is
  • 5.596 x 1019 J
  • 5.596 x 1028 J
Q.14
A photon of wave numbercm-1 has a wavelength of
  • 1 m
  • 1 mm
  • 1000 nm
  • 100 m
Q.15
The different types of energies associated with a molecule are __________
  • Vibrational energy
  • electronic energy
  • Rotational energy
  • All of these
Q.16
Moment of inertia depends on
  • Distribution of particles
  • Mass
  • Position of axis of rotation
  • All of these
Q.17
A body of M.I. 3 kg m² rotating with an angular velocity 2 rad/s has the same K.E. as a mass ofkg moving with a velocity of
  • 1 m/s
  • 2 m/s
  • 4 m/s
  • 8 m/s
Q.18
The product of the force times the lever arm; the movement of the force about the axis is:
  • torque
  • lever arm
  • rotational inertia
  • angular momentum
Q.19
The dimensions of angular momentum are
  • [M1 L2 T-1]
  • [M1 L1 T-1]
  • [M1 L1 T-2]
  • [M1 L2 T-2]
Q.20
The M.I. of a body does not depends upon
  • Angular velocity of a body
  • Axis of rotation of the body
  • The mass of the body
  • The distribution of the body
0 h : 0 m : 1 s