Unit of power of a lens is________________?
Unit of power of a lens is________________?
A. meter
B. watt
C. diopter
D. horsepower
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The path of alpha particle is_______________?
The path of alpha particle is_______________?A. Rectilinear
B. Curved
C. Zig-zag or erratic
D. EllipticalWavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?
Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?A. 4 x 10-10 m
B. 2 x 10-10 m
C. 0.02×10-10m
D. 20×10-10mWhen arrow is released form its bow, its energy is transformed from _____________________?
When arrow is released form its bow, its energy is transformed from _____________________?A. heat energy to K.E
B. elastic P.E to K.E
C. elemical energy to elastic P.E
D. K.E to elastic P.E.Which one is the derived quantity in SI units _____________?
Which one is the derived quantity in SI units _____________?A. Electric current
B. Electric charge
C. Plane angle
D. Amount of substancePair production cannot take place in a vacuum as ________ is not conserved ?
Pair production cannot take place in a vacuum as ________ is not conserved ?A. Energy
B. Charge
C. Mass
D. MomentumB.The unit of radioactivity curie is equal to________________?
The unit of radioactivity curie is equal to________________?A. 3.74 x 109 disintegration per sec
B. 3.70 x 1010 disintegration per sec
C. 3.55 x 1010 disintegration per sec
D. 3.60 x 1010 disintegration per sec