Question

so that the image formed is three times the size of object are.....
13.
20cm to form an image (1/4th) of the size of the object....
a) 100cm
b) 60cm
c) 20cm
d) None
14.
mirror is.....
a) (n-1)f
(n-1) f
(n+1)
b)
c)
d) (n+1)f
n
п
15.
A convex mirror of focal length 'f' produces an image (1/n)th of the size of
the object. The distance of the object form the mirror is.....
a) nf
b) f/n
c) (n+1)f
d) (n-1)
A concave mirror of focal length 'f' forms an erect image of twice its size,
object distance from the mirror is....
a) f/2
b) f/4
c) 3f/2.
d) 2f
16.
12. The positions of the object in front of a concave mirror of focal length 15m
a) 10cm;15cm b) 20cm;40cm c) 10cm;30cm d) 10cm 20cm
How far must an object be placed infront of convex mirror of focal length
A concave mirror of focal length 'f' produces an image 'n' times the size of
the object. If the image is real then the distance of the object from the​

Answer 1

Answer:

this is so much big question is smaller class I do not know