The diagram above shows a magnetic field due to a

The emf of a cell is the potential difference across its terminals when it is in

A man moves 6.0m East and then 10.0m N30ºE. How far is he from his starting point?

Which of the following is not true about a wave in a plucked string?

According to the kinetic theory of gases, the pressure exerted by a gas on the walls equals.

The density of water is 1g/cm\(^3\) while that of ice is 0.9g/cm\(^3\). Calculate the change in volume when 90g of ice is completely melted.

The graphical representation of the pressure law is always a straight line passing through the origin, only if the temperature scale is

The power of a lens in diopters is

Which of these colours in the visible spectrum has the longest wavelength?