An object placed 28 cm in front of a concave mirror with a 38 cm radius will form a real image 59.1 cm from the mirror. If the initial object is 5 cm tall, the image will be 10.5 cm tall and inverted due to the mirror's concave shape.
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Concave Mirror Image Formation
1. An object is placed 28.0 cm in front of a concave mirror which has a radius of 38.0 cm where
will the image be formed? Question 4 -106 cm -11.3 cm 59.1 cm 11.3 cm 2 points If the initial
object was 5.00 cm tall what is the images height? (use proper sign convesion) Number Units
Solution
Using a mirror formula, we have
1 / d 0 + 1 / d i = 1 / f
where, d 0 = object distance = 28 cm
f = focal length = R/2 = 19 cm
then, we get
1 / d i = 1 / (19 cm) - 1 / (28 cm)
1 / d i = (9 / 532) cm
d i = (532 / 9) cm
d i = 59.1 cm
Option (c) : it will be correct.
If the initial object was 5 cm tall, then the image height will be given as -
we know that, m = - (d i / d 0 )
(h i / h 0 ) = - [(59.1 cm) / (28 cm)]
h i = - (2.11) (5 cm)
h i = - 10.5 cm