A convex lens of focal length 10cm is placed at a distance of 12cm from a wall. How far from the lens should an object be placed so,as to form its real image on the wall.
Answers
Answered by
4
f=10 cm
u=-12cm
v=?
1/f=1/v-1/u
putting the value in this formula and answer is -60cm
u=-12cm
v=?
1/f=1/v-1/u
putting the value in this formula and answer is -60cm
Answered by
1
by mirror formula:
1/v - 1/u = 1/f
Sign convention is distance from the center of the lens to be positive in one direction and negative in the other.
=> 1/12 - 1/u = 1/10
=> 1/u = 1/12 - 1/10 = - 1/60
=> the object to be place on side opposite to that of the wall
at a distance of 60 cm. from the lens.
hope it helps
mark me as brainliest
Similar questions