A ball is dropped from a height of 20m above the surface of water in a lake. The refractive index of water is
. A fish inside the lake, in the line of fall of the ball, is looking at the ball. At an instant, when the ball is 12.8 m above the water surface, the fish sees the speed of ball as
a)
b)
c)
d)
A ball is dropped from a height of 20m above the surface of water in a lake. The refractive index of water is . A fish inside the lake, in the line of fall of the ball, is looking at the ball. At an instant, when the ball is 12.8 m above the water surface, the fish sees the speed of ball as
a)
b)
c)
d)
Question ID - 152645 | SaraNextGen Top Answer
A ball is dropped from a height of 20m above the surface of water in a lake. The refractive index of water is . A fish inside the lake, in the line of fall of the ball, is looking at the ball. At an instant, when the ball is 12.8 m above the water surface, the fish sees the speed of ball as
a)
b)
c)
d)
|
A ball is dropped from a height of 20m above the surface of water in a lake. The refractive index of water is |
|||||||
|
a) |
|
b) |
|
c) |
|
d) |
|
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
In this case when eye is inside water,
.png)
Or 
127 votes
Answer Link
127