What is concave lens?
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anyone zinda here?​

concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).

A concave lens is a lens that possesses at least a surface that curves inwards .

HOPE IT HELP YOU .

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.