Question

a candle flame 3cm high 10cm from diverging lens of focal length 15 cm the size of image will be?
a 1.8cm
b 2.4cm
c 3.2 cm
d 3.8 cm​

Answer 1

Answer:

ànswer ís 3,8 cm and plz mark bràñlíst plz plz

Answer 2

Explanation:

Height of object (h) =3cm

Focal length (f) = 15cm

Object distance (u) = 10 cm.

By lense formula,

1/f = 1/v - 1/u

1/15 = 1/v - 1/10

1/v = 1/-15 + 1/10

1/v = -3+1/30

1/v = -2/-30

1/v = 15 cm

Size of the object,

m = h'/h = -v/u

h' = 3×-15/-10

h' = 9/2

h' = 4.5

So, the size of the object = 4.5 cm