Question

'A' is the centre of the sphere of which the mirror is a part, 'C' is the geometrical centre of curved
mirror, 'B' is midpoint of AC.
a) Name the points A, B, C.
b) Mark the radius of curvature and focal length.
c) What type of a mirror is this — converging or diverging?
d) If AC=60 cm, what is the radius of curvature and focal length?​

Answer 1

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The dalton or unified atomic mass unit is a unit of mass widely used in physics and chemistry. It is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest. The atomic mass constant, denoted mᵤ is defined identically, giving mᵤ = m/12 = 1 Da.