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Physics-

General

Easy

Question

A student takes $50 g m$ wax (specific heat $equals 0.6 blank k c a l divided by k g ℃$ ) and heats it till it boils. The graph between temperature and time is as follows. Heat supplied to the wax per minute and boiling point are respectively

$500 c a l, 50 ℃$
$1000 c a l, 100 ℃$
$1500 c a l, 200 ℃$
$1000 c a l, 200 ℃$

The correct answer is: $1500 blank c a l comma blank 200 ℃$

Since specific heat $equals 0.6 k c a l divided by g cross times ℃ equals 0.6 blank c a l divided by g cross times ℃$
From graph it is clear that in a minute, the temperature is raised from $0 ℃$ to $50 ℃.$
$rightwards double arrow$ Heat required for a minute $equals 50 cross times 0.6 cross times 50 equals 1500 blank c a l$
Also from graph, Boiling point of wax is $200 ℃$

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