Question

- 0-
VT The dinneer u and are measu re planene
he principal
Let us consider the following examples.
From the
Example 1
ertically towards the surface of water
A bird is flying down vertically towards
first
with constant sneed There is a fish inside the water. 11 that fish
vertically below the bird, then the bird will appear to the fish to
a farther away than its actual distance
Using
b closer than its actual distance.
c. moving faster than its actual speed.
RE
d moving slower than its actual speed.
Object dis
Which of the four options are true? How can you pro sample
Solutions For refraction at a plane surface,
A transpo
we usen/vEn/u
......
he apparent
Letxbe the height of the bird above the water surface
instant and n be the refractive index of water.
olution:
n-refractive index of air,
Then nal.n.nu -x and let v -y, (see Digure
Substituting these values in equation (1)
Chenu
1/(-y)=1/(-x) => y = nx
In the above equation, we know that n is greater than 1. Hente
After
Using

etethetha
h​

Answer 1

Answer:

A,C

Explanation: