Physics
The Laser is a beam of radiations which are

Non-coherent and monochromatic
Coherent and non-monochromatic
Coherent and monochromatic
Non-coherent and non-monochromatic

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Physics
Plants are dried up in winter due to frost because

Photosynthesis does not take place at such low temperature
Respiration does not take place at low temperature
Evaporation does not take place
There is mechanical loss of tissues and drought condition prevails

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Physics
Circuit breaker usually operate under

Steady state of short-circuit current
Transient state of short-circuit current
Sub-transient state of short-circuit current
After D. C. component has ceased

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Physics
Which one of the following is the correct sequence of passage of light in a compound microscope?

Condenser -Objective lens -Body tube -Eyepiece
Objective lens -Condenser -Body tube -Eye piece
Eyepiece -Objective lens -Body tube -Mirror
Condenser -Objective lens -Eye -piece -Body tube

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