The area under the force displacement graph represents:
A. area
B. work done
C. power
D. none of these
When two protons are brought together:
A. Kinetic energy increases
B. P.E. between them increases
C. P.E. between them decreases
D. P.E. between tem does not change
One mega watt hour is equal to:
A. 36 x 106 J
B. 36 x 1012 J
C. 36 x 109 J
D. 36 x 108 J
When the speed of a moving body is doubled then:
A. its K.E is doubled
B. its acceleration is doubled
C. its P.E is doubled
D. its momentum is doubled
What are the dimensions of stress:
A. MLT-2
B. ML-2T-1
C. ML-1T-2
D. ML-T-1
Which of the following substances posses the highest elasticity:
A. Rubber
B. Steel
C. Glass
D. Copper
Biomass can be converted into fuels by:
A. direct combustion
B. fermentation
C. both A and B
D. none of these
Which one has the greatest energy gap:
A. Semi conductor
B. Conductor
C. Metals
D. Non metals
A completely filled band is called:
A. Conduction band
B. Valence band
C. Forbidden band
D. Core band
The band theory of solids explains satisfactorily the nature of:
A. Electrical insulators alone
B. Electrical conductors alone
C. Electrical semi conductors alone
D. All of the above
