1
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A black body radiates power ' P ' and maximum energy is radiated by it at a wavelength $\lambda_0$. The temperature of the black body is now so changed that it radiates maximum energy at the wavelength $\frac{\lambda_0}{4}$. The power radiated by it at new temperature is

A
64 P
B
256 P
C
4 P
D
16 P
2
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The temperature of a liquid falls from 365 K to 359 K in 3 minutes. The time during which temperature of this liquid falls from 342 K to 338 K is [Let the room temperature be 296 K ]

A
6 min
B
4 min
C
3 min
D
2 min
3
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In an isobaric process of an ideal gas, the ratio of work done by the system (W) during the expansion and the heat exchanged $(\mathrm{Q})$ is $\left(\gamma=\frac{\mathrm{C}_{\mathrm{p}}}{\mathrm{C}_{\mathrm{v}}}\right)$

A
$\gamma$
B
$\gamma-1$
C
$\frac{\gamma}{\gamma-1}$
D
$\frac{\gamma-1}{\gamma}$
4
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three identical metal spheres (of same surface area) have red, black and white colors and they are heated up to same temperature. They are allowed to cool. Arrange them from maximum rate of cooling to minimum rate of cooling

A
black, red, white
B
white, red, black,
C
red, black, white
D
red, white, black
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