Question

.pls ans it fast ...........​

Answer 1

u=27cm

h1=7cm

f=18cm

v=?

Therefore by, lens formula

1/f=1/v-1/u

1/18=1/v-1/(-27)

v=-54cm

I.e distance from the mirror of image is 54cm.

therefore,nature of image is real and inverted.

therefore by magnification formula,

h2/h1=-v/u

h2/7=-54/27

h2=-54×7/27

h2=-2×7

h2=-14cm

therefore height of the image is -14cm