Question

Determine the image distance and image height for 5.00 CM tall object is placed 20.0 cm from a convex mirror having a focal length of 15.0cm.
Answer me!!! fast !!​

Answer 1

$\huge\color{red}\boxed{Answer}$

given

hight of image [hi] = 5cm

object distance (u) = 20cm

focal length [f] = 15cm

by using mirror formula

$\color{brown}\boxed{\frac{1}{v}+\frac{1}{u}=\frac{1}{f} }$

formula in terms of v [image distance]

$</strong><strong>\</strong><strong>c</strong><strong>o</strong><strong>l</strong><strong>o</strong><strong>r</strong><strong>{</strong><strong>pink</strong><strong>}</strong><strong>\boxed{\frac{1}{v}=\frac{1}{f}-\frac{1}{u} }$

by putting value

$\frac{1}{v} = \frac{1 }{15} - \frac{1}{ - 20} \\ \\ \ \: v = \frac{20 \times 15}{20 + ( - 15)} \\ \\ v = \frac{300}{5} \\ \\ v = 60cm$

then hight of image

$</strong><strong>\</strong><strong>c</strong><strong>o</strong><strong>l</strong><strong>o</strong><strong>r</strong><strong>{</strong><strong>indigo</strong><strong>}</strong><strong>\</strong><strong>b</strong><strong>o</strong><strong>x</strong><strong>e</strong><strong>d</strong><strong>{</strong><strong>\frac{hi}{ho}=\frac{-v}{-u}</strong><strong>}</strong><strong> \\ \\ \\ \frac{hi}{5} = \frac{60}{20} \\ \\ hi = 3 \times 5 \\ \\ hi = + 15$

$\huge\color{</strong><strong>green</strong><strong>}{</strong><strong>expla</strong><strong>nation</strong><strong>}$

• 1st we find v or image distance by using mirror formula
• we take u object distance as -ve coz object is inverted
• v is +ve coz image is real and inverted

$\huge\color{</strong><strong>orange</strong><strong>}{</strong><strong>extra\</strong><strong>:</strong><strong>info</strong><strong>}$

mirror formula :- it is relationship between focal length image distance and object distance

formula number 2 is dirved from magnification formula

hope it helps you

be brainly

Answer 2

Answer:

guh khao saare bete milkr