Which one has the greatest energy gap ?
Which one has the greatest energy gap ?
A. Semi conductor
B. Conductor
C. Metals
D. Non metals
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Instantaneous and average velocities become equal when body___________________?
Instantaneous and average velocities become equal when body___________________?A. has zero acceleration
B. has uniform acceleration
C. has variable acceleration
D. moves in a circleThe path of alpha particle is_______________?
The path of alpha particle is_______________?A. Rectilinear
B. Curved
C. Zig-zag or erratic
D. EllipticalWhat is the SI unit of modulus of elasticity of substance ?
What is the SI unit of modulus of elasticity of substance ?A. Nm-2
B. Jm-2
C. Nm-1
D. Being a number it has no unit.According to which one of following law the density of atom is uniform ?
According to which one of following law the density of atom is uniform ?A. J.J.Thomson model
B. Rutherfords model
C. Bohrs model
D. All of the above laws contradict the statementThe tides raise the mater in the see roughly in a day___________________?
The tides raise the mater in the see roughly in a day___________________?A. once
B. twice
C. four time
D. eight timeThe range of the projectile at 30 deg and 60 deg are__________________?
The range of the projectile at 30 deg and 60 deg are__________________?A. equal to 45 deg
B. equal to 90 deg
C. equal to each other
D. none of the above