full an object 3 cm high is placed at a distance of 9 CM in front of concave mirror of focal length is 18 cm find the position nature and size of image formed
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f=-18cm
u=-9cm
h1=3
v=?
1/f=1/v- 1/u
1/-18=1/v-1/-9
take the lcm
1/-18-1/9=1/v
1/v= -1'2/18
1/v = -3/18
v=-6
m=-h1/h2=-v/u
m=-6/9=-2/3
nature of image is real and inverted
u=-9cm
h1=3
v=?
1/f=1/v- 1/u
1/-18=1/v-1/-9
take the lcm
1/-18-1/9=1/v
1/v= -1'2/18
1/v = -3/18
v=-6
m=-h1/h2=-v/u
m=-6/9=-2/3
nature of image is real and inverted
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