Physics
Plants are dried up in winter due to frost because

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

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Physics
Which one of the following is not a property of electromagnetic waves?

Electromagnetic waves are transverse waves
Oscillating electric field and magnetic field are perpendicular to each other.
Electromagnetic waves do not show interference and diffraction.
Electromagnetic waves do not require a medium to propagate.

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