A 2.0cm high object is placed at a distance of 20cm from a concave mirror. A real image is formed at a 40cm from the mirror. Calculate the focal length of the mirror and the size of mirror and with ray diagram... Plzzz answer fast its too urgent...
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ho of object = 2.0cm
u= 20cm
v= 40 cm
1/f= 1/v+1/ u
1/f= 1/40 + 1/20
1/f= 1+2÷ 40
1/f= 3÷ 40
1/f= 13.33
u= 20cm
v= 40 cm
1/f= 1/v+1/ u
1/f= 1/40 + 1/20
1/f= 1+2÷ 40
1/f= 3÷ 40
1/f= 13.33
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