1
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If heat energy $\Delta \mathrm{Q}$ is supplied to an ideal diatomic gas, the increase in internal energy is $\Delta U$ and the amount of work done by the gas is $\Delta \mathrm{W}$. The ratio $\Delta \mathrm{W}: \Delta \mathrm{U}: \Delta \mathrm{Q}$ is

A
$2: 3: 5$
B
$2: 5: 7$
C
$7: 5: 9$
D
$1: 2: 5$
2
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The power radiated by a black body is P and it radiates maximum energy around the wavelength $\lambda_0$. Now the temperature of the black body is changed so that it radiates maximum energy around wavelength $\left(\frac{\lambda_0}{2}\right)$. The power radiated by it will now increase by a factor of

A
2
B
8
C
16
D
32
3
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
 

A bucket full of hot water is kept in a room. If it cools from $75^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C}$ in $t_1$ minutes, from $70^{\circ} \mathrm{C}$ to $65^{\circ} \mathrm{C}$ in $\mathrm{t}_2$ minutes and $65^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in $t_3$ minutes, then

A
$\mathrm{t}_1<\mathrm{t}_2<\mathrm{t}_3$
B
$\mathrm{t_1>t_2>t_3}$
C
$\mathrm{t}_1=\mathrm{t}_2=\mathrm{t}_3$
D
$\mathrm{t}_1<\mathrm{t}_2=\mathrm{t}_3$
4
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

An ideal diatomic gas is heated at constant pressure. What is the fraction of total energy applied, which increases the internal energy for the gas?

A
$\frac{2}{5}$
B
$\frac{5}{7}$
C
$\frac{3}{7}$
D
$\frac{3}{5}$
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