A mosquito O is sitting infront of a glass rod having spherical end of radius of curvature 40 ~cm . The image would be formed at

Step-by-step solution

As, we know, ₂ v - ₁ u = ₂- ₁ R aligned & 1.5 v - 1 (-20) = 1.5-1 +40 & v=-40 ~cm & aligned Negative sign shows that image is obtained on the same side of object i.e., towards left.