Question

If an object 10cm high is placed at the distance of36cm from a concave mirror of focal length 12cm.find the nature position and size of the image formed?

Answer 1

concave mirror
h = 10cm
u= -36cm
f= -12cm
v=? h'=?
by mirror formula
1/f = 1/v + 1/u
1/-12 = 1/v -1/36
1/v = 1/36 -1/12
1/v = -1/18
v = -18cm
NATURE = REAL AND INVERTED
SIZE = SMALLER IN SIZE
POSITION= BETWEEN F AND C
m = -v/u
m = 18/-36
m= -1/2
IMAGE IS OF HALF SIZE THAT OF OBJ