A) 30 cm left
B) Infinity
C) 1 cm to the right
D) 18 cm to the left
Correct Answer: A
Solution :
By using formula \[\frac{{{\mu }_{2}}}{v}-\frac{{{\mu }_{1}}}{u}=\frac{{{\mu }_{2}}-{{\mu }_{1}}}{R}\] \[\Rightarrow \]\[\frac{1.5}{v}-\frac{1}{(-15)}=\frac{(1.5-1)}{+30}\Rightarrow v=-\,30\,cm\]. Negative sign shows that, image is obtained on the same side of object i.e. towards left.
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