Question

an object 4 cm high is placed at a distance of 15 CM in front of a convex mirror having a radius of curvature of 10 cm then the image formed at a distance of?

1.) 7.5cm behind the mirror

2.) 3.75cm In front of the mirror

3.) 7.5cm in front of mirror

4.) 3.75cm behind the mirror​

Answer 1

Answer:

height of object= 4cm , object distance =15 cm ,radius =10 , image distance ,=

Step-by-step explanation:

f =r /2 =10/2 = 5 cm ,. 1/f =1/v +1/u , 1/5 =1/v +1/15 , 1/v = 1/5-1/15=3 - ( - 1) /15 = - 2/ 15 , v = -15/2 , m = hi /ho = -v /u , 4 /ho = - 15/2 = ho = 7.5 cm behind the mirror