A stationary objected at `0^(@)C` and weighing 3.5 kg falls from a height of 2000m on a snow mounation at `0^(@)C`. If the temperature of the object just before hitting the snow is `0^(@)C` and the object comes to rest immediately `(g = 10 m//s^(2))` and (latent heat of ice = `3.5 xx 10^(5) "joule"//s)` then the mass of ice that will melt is -

Options

A. 2kg
B. 200 g
C. 20 g
D. 2 g

Answer

B

Explanation

mgh = m. L `rArr m = (3.5 xx 10 xx 2000)/(3.5 xx 10^(5)) = 0.2 kg`
`rArr m. = 200 g`.