स्वागत का सन्धि

Clear nights are colder than cloudy nights because of –

In a convex lens, when the object is at infinity, then the position of image is ______.

Which of the following materials behaves as a dielectric?

The unit of electric power is —  

Tungsten is used for the manufacture of the filament of an electric bulb, because –

Which physical quantity remains constant during uniform circular motion?  

The magnetic equator is closely associated with which of the following?

A soap bubble shows colours when illuminated with white light. This is due to –

The energy emitted by the Sun is due to

An image formed by a plane mirror is ______.