B:-become narrow
C:-no effect
D:-disappears
Correct Answer:- Option-A
Question74:-The fundamental effect that is used in the conversion of solar energy to heat energy is
A:-Photovoltaic effect
B:-Faraday effect
C:-Joule-Kelvin effect
D:-Green house effect
Correct Answer:- Option-D
Question75:-In biomass, the solar energy is stored in the form of
A:-electrical energy
-heat energy
C:-chemical energy
D:-mechanical energy
Correct Answer:- Option-C
Question76:-the dimensional of the phase space of a particle moving in a plane is
A:-4
-1
C:-2
0:-0
Correct Answer:- Option-A
Question77:-Which among the following is an elementary particle ?
A:-neutron

:-electron
D:-sigma
Correct Answer:- Option-C
Question78:-The sodium D lines arise due to the transitions
A:-from P state to S state
B:-from F state to S state
C:-from F state to D state
D:-from D state to S state
Correct Answer:- Option-A
Question79:-The departure of relative permeability from unity is called
A:-Magnetic field strength
B:-Magnetic susceptibility
C:-Magnetic flux density
D:-Magnetizing field intensity
Correct Answer:- Option-B
Question80:-If the Hall co-efficient of a specimen is positive, the current conduction in the specimen is dominated by
A:-electrons
B:-phonons
C:-photons
D:-holes
Correct Answer:- Option-D
Question81:-The tools used to represent thoughts, ideas, knowledge and concepts are
A:-Rubrics
B:-Feedback tools
C:-Renew and reflection tools
D:-Graphic organizers
Correct Answer:- Option-C
Question82:-Which of the following is not a basic purpose of lecture method ?
A:-To motivate
B:-To explore
C:-To renew
D:-To expand
Correct Answer:- Option-B
Question83:-Validity of a test means