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Q.

The ratio of electric and gravitational force between two protons. Charge of each proton is 1.6×10-19C, mass is 1.67×10-27Kg and G = 6.67 × 1011Nm2Kg2.

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a

1020

b

5 N

c

1015

d

1.23×1036

answer is A.

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Detailed Solution

Given Data: Determine the ratio of electric and gravitational force between two protons.

Formula Used:  Gmp2r2,=K(e)(e)r2

Detailed Solution:

Gravitational force =Gmp2r2

Electric force =K(e)(e)r2

Ratio =K1.6×10-192r2×r2G×1.67×10-272

=9×109×1.6×10-1926.67×10-111.67×10-272

=1.23×1020×1016=1.23×1036

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