A) real and \[-2\]
B) virtual and \[-2\]
C) real and \[+2\]
D) virtual and \[+2\]
Correct Answer: A
Solution :
Given that equations (i) 20cm (ii) = 30cm Now, from the mirror formula \[\frac{1}{\upsilon }=\frac{1}{f}-\frac{1}{u}=\frac{1}{-20}-\frac{1}{-30}\] \[=-\frac{1}{60},\,\upsilon =-60\,cm\] \[m=-\frac{\upsilon }{u}=\left( \frac{-60}{30} \right)=-2\] Here, clearly image is realYou need to login to perform this action.
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