A focal Length of concave mirror is 15cm. If the object distance is 20cm Find the position and nature of the object???
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f= -15cm
u= -20cm
v=?
1/f=1/v-1/u
1/-15=1/v-1/-20
1/-15=1/v+1/20
1/-15-1/20=1/v
-4-3/60=1/v
-7/60=1/v
60/-7=v
-8.57cm = v
u= -20cm
v=?
1/f=1/v-1/u
1/-15=1/v-1/-20
1/-15=1/v+1/20
1/-15-1/20=1/v
-4-3/60=1/v
-7/60=1/v
60/-7=v
-8.57cm = v
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