Question

a:b=
$7 \times \frac{1}{2} \div 5$
and
b:c =
$1 \times \frac{1}{4} \div 3$

​

Answer 1

Answer:

When an illuminated object is held infront of a thick plane glass mirror, several

images are seen, out of which the second image is brightest.

Answer 2

Answer:

a:b=

$7 \times \frac{1}{2} \div 5$

and

b:c =

$1 \times \frac{1}{4} \div 3$

Step-by-step explanation:

a:b= 7x1/2x1/5

7/10.

b:c= 1x1/4x1/3

1/12.