Question

Draw the ray diagram of image formation by a concave mirror when the object is played at its ce tre of curvature .a concave lens has focal length of 15cm.At what distance should the object from the lens be placed so that it forms an image at 10cm from the lens ?Also find the magnification produced by the lens

Answer 1

Answer:

Im too lazy to draw the ray diagram instead ill find magnification

f= -15cm

v= -10cm

u=?

1/f=1v-1/u

-1/15+1/10= -1/u

-10+15/150= -1/u

1/30= -1/u

u= -30cm

m=v/u

1/3 = 0.33 is the magnification