1
MHT CET 2026 16th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
A horizontal pipe carries water in a streamline flow. At point along the pipe, where the cross-sectional area is $A_1$, the velocity of water is $V_1$ and the pressure is $P_1$. What is the pressure of water at another point where the cross-sectional area is $A_2$?
A
$P_1 - \dfrac{\varrho V_2^2}{2A_1^2}(A_2^2 - A_1^2)$
B
$P_1 + \dfrac{\varrho V_1^2}{2A_2^2}(A_2^2 - A_1^2)$
C
$P_1\varrho V_1^2(A_1^2 - A_2^2)$
D
$P/\varrho V_1^2 A_2^2$
2
MHT CET 2026 16th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
A bowl filled with very hot water cools from $98^\circ\text{C}$ to $86^\circ\text{C}$ in 2 minutes when the room temperature is $22^\circ\text{C}$. How long it will take to cool from $75^\circ\text{C}$ to $69^\circ\text{C}$ ?
A
$0.5$ minute
B
$1.4$ minute
C
$1$ minute
D
$2$ minute
3
MHT CET 2026 16th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
A Carnot engine with efficiency 50% takes heat from a source at 600 K. To increase the efficiency by 20%, keeping temperature of the sink same, the new temperature of the source will be
A
$300\ \text{K}$
B
$900\ \text{K}$
C
$1000\ \text{K}$
D
$360\ \text{K}$
4
MHT CET 2026 16th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
One gram of a liquid is converted to vapour at $3 \times 10^5$ Pa pressure. If 10% of the heat supplied is used for increasing the volume by $1600\ \text{cm}^3$ during this phase change, then the increase in internal energy in the process will be
A
$4.32 \times 10^8\ \text{J}$
B
$4800\ \text{J}$
C
$4320\ \text{J}$
D
$4.32 \times 10^5\ \text{J}$

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