Question

In a thin spherical fish bowl of radius 10 cm filled with water of refractive index 4/3, there is a small fish at
a distance of 4cm from the centre C as shown in the figure. Where is the image of fish appears if seen from
E
cm
1) 5.2 cm
2) 7.2 cm
3)4.2 cm
4) 3.2 cm​

Answer 1

Answer:

1

Explanation:

ANSWER

v→imageposition

u→objectposition

R→Radiusofsurface

v

n

2

−

u

n

1

=

R

n

2

−n

1

⇒

v

1

−

(−6)

(4/3)

=

(−10)

1−4/3

⇒

v

1

+

3×6

4

=

3×10

1

⇒

v

1

=

30

1

−

18

4

⇒

v

1

=

90

−17

⇒v=

17

−90

=5.2cm

Hence,

option (A) is correct answer