Amplitude of vibrations remains constant in case of
(i) free vibrations
(ii) damped vibrations
(iii) maintained vibrations
(iv) forced vibrations

Options

A. (i), (ii) and (iv)
B. (ii) and (iii)
C. (i) , (ii) and (iii)
D. (ii) and (iv)

Answer

A

Explanation

(a) Amplitude remains constant in free vibrations, maintained vibrations and forced vibrations.