Question

Two Mirrors are hinged at given angle that is 30 degree, 45 degree, 60 degree, 120 degree 180 degree, 90 degree and 0 degree ( parallel) a coin is placed between them.Write the number of images formed in the mirror in each case

Answer 1

Answer:

at 0°- infinity images

30 °-6 inages

45°-4images

60°- 3 images

90°- 2 images

180°-0 images

Answer 2

Answer:

Explanation:

Explanation:

number of images between two mirror can be calculated by formula;

$n = \dfrac{360^0}{\theta}-1$

where $\theta$ is the angle between the mirrors

a) 30°

 $n_1 = \dfrac{360^0}{30^0}-1$

n₁ = 11

b) 45°

$n_2 = \dfrac{360^0}{45^0}-1$

         n₂= 9  

c) 60°

   $n_3 = \dfrac{360^0}{60^0}-1$

        n₃ = 5

d) 120°

 $n_4 = \dfrac{360^0}{120^0}-1$

   n₄ = 2

e) 180°

 $n_5 = \dfrac{360^0}{180^0}-1$

   n₅ = 1

f) 90°

 $n_6= \dfrac{360^0}{90^0}-1$

  n₆ = 3

g) 0°

  $n_7= \dfrac{360^0}{0^0}-1$

   n₇ = ∞