A bullet of mass `10xx10^(-3)` moving with a speed of `20ms^(-1)` hits an ice block `(0^(@)C)` of 990g kept at rest on a frictionless floor and gets embedded in it. If ice takes 50% of K.E, the amount of ice melted (in grams) approximately is (J=4.2J/cal) (latent heat of ice=80cal/g)

Options

A. 6
B. 3
C. `6 xx 10^(-3)`
D. `3 xx 10^(-3)`

Answer

D