Questions  

A bob of a simple pendulum of mass 40 gm with a positive charge 4 x10-6C is oscillating with time period 'T1'. An electric field of intensity 3.6 x 104 N/c is applied vertically upwards now time period is T2.  The value of  T2T1 is (g=10 m/s-2

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By Expert Faculty of Sri Chaitanya
a
0.16
b
0.64
c
1.25
d
0.8
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detailed solution

Correct option is C

T2T1=gg−a=gg−qEm=106.4=108=1.25  effective g value is g-a

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