Find at what angle a fish inside a lake will see a rising sun. (Take `mu_(omega) = 4//3)`

A bird in air is dividing vertically over a tank with speed 6 cm//s . The base of the tank is silvered. The fish in the tank is rising upward along the same line with speed 4 cm//s . (Take: mu_("water") = 4//3) . Find: (a) The speed of the image of the fish asseen directly by the bird. (b) The speed of the image of the bird relative to the fish looking upwards.

A diver inside water sees the setting sun at (sin^-1.(3)/(4)=49^@) (mu_omega=4//3)

A convex glass lens (mu_(g) = 1.5) has a focal length of 8 cm when placed in air. What is the focal length of the lens when it is immersed in water ? (mu_(omega) = (4)/(3))

Determine the direction in which a fish under water sees the setting sun. Given, for water mu = 1.33 .

Determine the direction in which a fish under water sees the setting sun. Given, for water mu = 1.33 .

A bird is flying up at an angle sin^(-1)(3//5) with the horizontal. A fish in a pond looks at that bird when it is vertically above the fish. The angle at which the bird appears to fly (to the fish) is [mu_(w) = 4//3]

Light takes 8 min 20 sec to reach from sun on the earth. If the whole atmosphere is filled with water, the light will take the time (._(a)mu_(w)=4//3)

A bird in air is diving vertically over a tank with speed 5 "cm//s" , base of tank is silvered. A fish in the tank is rising upward abong the same line with speed 2cm/s. Water level is falling at rate of 2cm/s [Take : mu_(water) = 4//3 ] {:("Column"I(cm//s), "Column"II), ((A) "Speed of the image of fish as seen by the bird directly", (P) 8), ((B) "Speed of the image of fish formed after reflection in the mirror as seen by the bird", (Q) 6), ((C) "Speed of image of bird relative to the fish looking upwards" , (R) 3), ((D) "Speed of image of bird relative to the fish looking downwards in the mirror" , (S) 4):}