Question

An object is placed at a distance of 10cm from concave mirror. It's image is 6cm farther. Find focal length.

Answer 1

An object is placed at a distance of 10cm from concave mirror. It's image is 6cm farther. Find focal length.

Good question,

Here is your perfect answer!

Here u = - 10cm,

v = - 6cm,

=) 1/f = 1/v + 1/u

=) 1/f = 1/-10 + 1/-6

=) 1/f = - 16/60

=) f = - 60/16 = - 3.75 cm.

Answer 2

ANSWER

QUESTION

An object is placed at a distance of 10cm from concave mirror. It's image is 6cm farther. Find focal length.

Given

u=-10

v=-6

1/f=1/v+1/u

1/f=1/-6+1/-10

1/f=-5+-3/30

1/f=-8/30

f=-30/8 cm

THANKS