A bird is flying $3 m$ above the surface of water. If the bird is diving vertically down with speed of $6 m / s$ , its apparent velocity as seen by a stationary fish underwater is :
$(μ_{w a t e r} = \frac{4}{3})$

8 m / s

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

6 m / s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

12 m / s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

4 m / s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $8 m / s$
$\frac{apparent speed with respect to fish}{actual speed}$ $= refractive index of water refractive index of air$

refractive index of water = $\frac{4}{3}$

refractive index of water =1

actual speed =6 m/s

$∴ apparent speed = \frac{4}{3} \times 6 = 8 m / s$

Suggest Corrections

Similar questions

A bird is flying 3 m above the surface of water. If the bird is diving vertically down with speed = 6 m/s, his apparent velocity as seen by a stationary fish underwater is:

Q. A bird is flying

3 m

above the surface of water of refractive index

4 / 3

If the bird is diving vertically down with speed

6 m / s

, his apparent velocity as seen by a stationary fish underwater (in

m / s

) is:

Q. A fish rising vertically with speed 3 m/s to the surface of water sees a bird diving vertically towards it with speed 9 m/s. Given

_{a} μ_{w} = (4 / 3)

. The actual velocity of dive of bird is

Q. A fish is rising up vertically inside a pond with velocity

4 cm/s

, and notices a bird, which is diving downward and its velocity appears to be

16 cm/s

(to the fish). The real velocity of the diving bird is

[μ_{water} = 4 / 3]

Q. A fish is rising up vertically inside a pond with velocity

4 cm/s

and notices a bird, which is diving downward and its velocity appears to be

16 cm/s

(to the fish). The real velocity of the diving bird is

[μ_{water} = 4 / 3]

Join BYJU'S Learning Program

A bird is flying 3 m above the surface of water. If the bird is diving vertically down with speed of 6 m/s, its apparent velocity as seen by a stationary fish underwater is :(μwater=43)

The correct option is A 8 m/sapparent speed with respect to fish actual speed = refractive index of water refractive index of air refractive index of water =43refractive index of water =1actual speed =6 m/s ∴apparent speed =43×6=8m/s

A bird is flying $3 m$ above the surface of water. If the bird is diving vertically down with speed of $6 m / s$ , its apparent velocity as seen by a stationary fish underwater is :
$(μ_{w a t e r} = \frac{4}{3})$

The correct option is A $8 m / s$
$\frac{apparent speed with respect to fish}{actual speed}$ $= refractive index of water refractive index of air$

refractive index of water = $\frac{4}{3}$

refractive index of water =1

actual speed =6 m/s

$∴ apparent speed = \frac{4}{3} \times 6 = 8 m / s$