• # question_answer An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm. Write four characteristics of the image formed by the mirror.

 Given: $u=-30\,cm,\,f=15\,cm$ We know that, $\frac{1}{v}+\frac{1}{u}=\frac{1}{f}$ $\frac{1}{v}=\frac{1}{15}+\frac{1}{30}=\frac{2+1}{30}=\frac{3}{30}$ $v=\,10\,cm$ Characteristics of image: (i) Image formed is erect. (ii) Image formed is small in size. (iii) Image formed is virtual. (iv) Image is formed at a distance of 10 cm behind the mirror between focus and pole.