A) 10
B) 15
C) 20
D) 25
Correct Answer: C
Solution :
Distance of object from mirror = 15+\[\frac{33.25}{4}\times 3\]= 39.93 cm Distance of image from mirror =15 + \[\frac{25}{4}\times 3\]=33.75 For mirror, \[\frac{1}{v}+\frac{1}{u}=\frac{1}{f}\] Þ \[\frac{1}{-33.75}-\frac{1}{39.93}=\frac{1}{f}\]Þ f » ?18.3 cm.You need to login to perform this action.
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