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KEAM 2020 Physics and Chemistry Solved Paper
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© examsnet.com
Question : 12
Total: 120
Two taps supply water to a container, one at the temperature of 20°C at the rate of2 k g minute and another at 80°C at the rate of 1 kg/minute. If the container gets water from the two taps simultaneously for 10 minutes, then the temperature of water in the container is
35°C
30°C
50°C
40°C
45°C
Validate
Solution:
Mass of water collected from tap
1
c
m
10 minutes,
m
1
=
2
×
10
=
20
k
g
T
1
=
20
∘
C
Mass of water collected from tap
2
c
m
10 minutes
m
2
=
1
×
10
=
10
k
g
T
2
=
80
∘
C
Final temperature
T
=
M
1
T
1
+
M
2
T
2
M
1
+
M
2
=
20
×
20
+
10
×
80
30
=
40
∘
C
© examsnet.com
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