Q. A lens X has following observation a. When the objects is placed at infinity, the image is formed at focus of the lens
b. When a object is placed at 60 cm from the lens, A real image is forced at 10 cm from lens on other
side
The lens has positive Power

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The atoms and molecules in it are in constant motion. The kinetic energy of such a body is the measure of its temperature. Potential energy is classified depending on the applicable restoring force. Gravitational potential energy – potential energy of an object which is associated with gravitational force