Question
Which of the following is the cause of black heart of
potato?Solution
Black heart occurs primarily in storage when the tubers do not receive enough oxygen. Blackening of the tuber center follows acute oxygen deficiency associated with either low temperature in confined storage or high field soil temperatures.
The storage battery of a car has an emf of 15 V. If the internal resistance of the battery is 0.5 Ω, what is the maximum current that can be drawn from...
The mass of an object on moon ________ in comparison to the mass on earth.
Electromagnetic waves travelling in a medium having relative permeability μr = 1.2 and relative permittivity Er = 0.012. The speed of electromagnetic w...
Which of the following is a conductor of electricity?
Match List-I with List-II and select the correct answer using the code given below the Lists:
An object is placed on the axis of a concave mirror at its focus (F). The image formed is:
The autonomic nervous system controls which of the following?
A body is said to be in equilibrium when:
A spherical conductor of radius R is surrounded by a concentric spherical shell of radius 2R. The capacitance of this system is:
‘Therm’ is the unit of –
