Question

A fish is a little away below the surface of a lake in the critical angle is 49 degree then refresh could see things above the water surface within an angular range of

Answer 1

Answer:

The angular range in which the fish can see above water surface will be 98°

Step-by-step explanation:

critical angle = angle that the light ray in one side will make with the water surface

This angle will be equal to half the range in which the fish can see

=> angle range = 2 x critical angle

= 2 x 49

= 98°

Hence The angular range in which the fish can see above water surface will be 98°

Answer 2

Answer: 98 should be correct answer. Angular range = 2* critical angle..

Step-by-step explanation: