Which of the following substances posses the highest elasticity ?
Which of the following substances posses the highest elasticity ?
A. Rubber
B. Steel
C. Glass
D. Copper
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When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?
When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?A. polarization
B. constructive interference
C. destructive interference
D. diffractionThe unit of coefficient of linear expansion or volume expansion is__________?
The unit of coefficient of linear expansion or volume expansion is__________?A. K
B. K-1
C. K -2
D. noneHow many types of units are in SI ?
How many types of units are in SI ?A. 1
B. 2
C. 3
D. 4The first book of Physics was written by__________?
The first book of Physics was written by__________?A. Kelvin
B. Newton
C. Aristotle
D. FaradayThe metastable state for an atom in laser light is_____________?
The metastable state for an atom in laser light is_____________?A. 10-4 sec
B. 10-5 sec
C. 10-3 sec
D. 10-8 secAverage translational kinetic energy per molecule of an ideal gas is given by_____________?
Average translational kinetic energy per molecule of an ideal gas is given by_____________?A. 3NaT/2R
B. 2NaT/3
C. 3RT/2Na
D. 3Na/2RT