“ विवाचक ” का सही अंग्रेजी पर्याय चुनिये।

Sounds of frequencies less than about ______ vibrations per second cannot be detected by the human ear.

An object of mass ‘m’ be made to fall freely from a height ‘h’. At the start the potential energy is _____ and kinetic energy is ______.

A sphere of radius 1m encloses a charge of 10μC. Another charge of −5μC is placed inside the sphere. The net electric flux would be :

The base of an electric iron is brightly polished mainly -

Which one of the following is called a red planet?

The Pointing vector of electromagnetic waves has the same dimensions as that of:

Going from fluorine to chlorine, to bromine and then to iodine, the electro negativity:

What is the maximum value of deforming force upto which a material shows elastic property and above which the material loses it?

In a concave mirror which of the following pair of position of object – size of the image is correct?

I. At infinity – point sized

A pond of water appears less deep due to –