1. The given table gives the growth of a child.
( Height in cm ) 75 , 92 , 108 , 118 , 128 .
( Age in years ) 2 , 4 , 6 , 8 , 10 .
Draw the line graph for the table and answer the following questions:
Answers
Answer:
Rekha placed a juice bottle at a distance of 20 cm in front of a convex mirror which has a focal length of 20 cm.
To find:
Location of image ?
Calculation:
Applying MIRROR FORMULA:
\sf \dfrac{1}{f} = \dfrac{1}{v} + \dfrac{1}{u}
f
1
=
v
1
+
u
1
\sf \implies\dfrac{1}{20} = \dfrac{1}{v} + \dfrac{1}{( - 20)}⟹
20
1
=
v
1
+
(−20)
1
\sf \implies\dfrac{1}{20} = \dfrac{1}{v} - \dfrac{1}{ 20}⟹
20
1
=
v
1
−
20
1
\sf \implies \dfrac{1}{v} = \dfrac{1}{20} + \dfrac{1}{20}⟹
v
1
=
20
1
+
20
1
\sf \implies \dfrac{1}{v} = \dfrac{2}{20}⟹
v
1
=
20
2
\sf \implies v = 10 \: cm⟹v=10cm
So, image will be formed 10 cm behind mirror.
Image will be virtual, erect and diminished. These are the general characteristics of image by convex mirror.
Step-by-step explanation:
try to solve yourself