The 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 sec
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The direction of the vector product is given by______________?
The direction of the vector product is given by______________?A. Head to tail rule
B. Right-hand rule
C. Left-hand rule
D. Triangular ruleThe direction of the linear velocity of a body moving in a circle is______________?
The direction of the linear velocity of a body moving in a circle is______________?A. along the axis of rotation
B. along the tangent
C. directed towards the centre
D. directed away from the centreThe distance between any two consecutive crests or troughs is called____________________?
The distance between any two consecutive crests or troughs is called____________________?A. frequency
B. period
C. Wave length
D. phase differenceBoyles law helds for ideal gases in________________?
Boyles law helds for ideal gases in________________?A. isochoric processes
B. isobaric processes
C. isothermal processes
D. adiabatic processesIf moon radius is 1600 km and g on its surface is 1.6 ms-2 then the escape velocity on the moon is ___________________?
If moon radius is 1600 km and g on its surface is 1.6 ms-2 then the escape velocity on the moon is ___________________?A. 1600 ms-1
B. 50.6 ms-1
C. 71.6 ms-1
D. 2263ms-1On the basis of band theory of solids the semiconductors have _____________________?
On the basis of band theory of solids the semiconductors have _____________________?A. A party filled valence band and totally empty conduction band
B. A completely filled valence band a totally empty conduction band and a very wide forbidden band
C. A completely filled valence band a partially filled conduction band and a narrow forbidden band
D. A partly filled valence band a totally empty conduction band and a wide forbidden band