1.

A bullet of mass 10xx10^(-3)kgmoving 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)

Answer»

6
3
`6XX10^(-3)`
`3XX10^(-3)`

ANSWER :D


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