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How to Make Notes Like A Pro ?

Make a labelled diagram of a candle flame.

Make a labelled diagram of a candle flame.

How many Lumens make 37.68 candle power ?

How many thousands make a lakh ?

A small candle 2.5 cm in size is placed 27 cm in front of a concave mirror of radius of curvature 36 cm . At what distance from the mirror should a screen be placed in order to receive a sharp image ? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved ?