1) An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirro

Question

1) An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focused image can be obtained?

Find the size and the number of the image.
(Hint): Find the value of image distance (v) first, the screen should be placed from the mirror at a distance equal to image distance.

Bella · Answer

Answer:   good morning sis kese ho bhot dino baad

Ivy · Answer

Given that:

u = – 27 cm

f = – 18 cm

h0 = 7.0 cm

Find out:

We need to find out size and nature of image

Formula:

We know the mirror formula that

1/v = 1/f- 1/u

1/v = -1/18 + 1/27 = -1/54

V = – 54 cm

The screen must be placed at a distance of 54 cm from the mirror in front of it.

hi/h0= v/u

hi/7 = +54/-27 hi= -2 x 7 = -14 cm.

Thus, the image is of 14 cm length and is inverted image

[tex]\huge\fbox{\purple{\underline{Mark me Brainlist}}}[/tex]

Reply

Luna

Show that (-18) = [6 = (-1)] = [(-18) = 6] = (-1)
Show that {(–72) = (-9)} {(-20) = (-5)} = 2

koi nineteen thanks dedo mai lota dungi sirf jis ne mujhe thanks dya woh is question ka answer de dena.

2 thoughts on “1) An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirro”

Given that:

Find out:

Formula: