Question

Focal length of cocave mirror is 20 cm find position of the image in which object is kept 10cm infront of the mirror will be real

Answer 1

Answer:

1. V =-20

Explanation:

1 by 20 is equal to 1 by minus 10 + b 1 by 20 minus 1 by 10 is equal to 1 by 1 - 20 by 20 barabar 1 by b minus 20 is equal to 1 by b minus 3 1 hour 20 -20 answer