What will be the value of 1 gf

(A) 105 dyne

(B) 981 dyne

(C ) 9.8 N

(D) 1N

A gram-force (gf) is a gravitational unit of force. It is defined as the force exerted by a mass of 1 gram under the standard acceleration due to gravity.

Since g = 9.8 m/s², the value of 1 gram-force is:

1 gf = 1 g × g = 0.0098 N = 9.8 mN

In terms of CGS units:

1 gf = 980.665 dyne

Here, dyne is the unit of force in the CGS system (1 dyne = 10^-5 N).

Although force can be expressed in many units (gf, dyne, etc.), the SI unit of force is always the Newton (N).

So, the correct answer is Option B.