Question

(ع)
1.6
A point source of light is placed at the centre of
curvature of a concave mirror. The angle of
deviation of the rays incident on the mirror
from this source and reflected from it, is
(a) 0°
(b) 180°
(c) 90°
(d) 360°
​

Answer 1

Step-by-step explanation:

The metallic nickel–iron outer core is liquid because of the high temperature. However, the intense pressure, which increases towards the inner core, dramatically changes the melting point of the nickel–iron, making it solid.