a concave mirror used in headlight of a car has a radius of curvature of 30 cm at what distance a lamp should be placed in front of the mirror to get your fine parallel beam of light
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Since u=-30 and to get a parallel beam of light the lamp should be placed 30 cm away from the mirror
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Since R= –30cm
f=R/2
f= -15cm
The lamp should be placed at focus i.e. at -15cm to get parallel beams of light.
Any object placed at the focus of a concave mirror will give you parallel beams of light.
f=R/2
f= -15cm
The lamp should be placed at focus i.e. at -15cm to get parallel beams of light.
Any object placed at the focus of a concave mirror will give you parallel beams of light.
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