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1. The graph shown was obtained from experimental measurements of the period of oscillations T for different masses M placed in the scale pan on the lower end of the spring balance. The most likely reason for the line not passing through the origin is that the

(a)  Spring did not obey Hooke’s Law

(b)   Amplitude of the oscillations was too large

(c)   Clock used needed regulating

(d)   Mass of the pan was neglected

Answer-d

(5)

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