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Physics
Physics
Problem
A body cools in 7 minutes from
60
∘
C
60^{\circ}\text{C}
6
0
∘
C
to
40
∘
C
40^{\circ}\text{C}
4
0
∘
C
. The temperature of the surrounding is
10
∘
C
10^{\circ}\text{C}
1
0
∘
C
. The temperature of the body after the next 7 minutes will be (a)
30
∘
C
30^{\circ}\text{C}
3
0
∘
C
(b)
34
∘
34^{\circ}
3
4
∘
(c)
28
∘
C
28^{\circ}\text{C}
2
8
∘
C
(d)
32
∘
C
32^{\circ}\text{C}
3
2
∘
C
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