1
MHT CET 2022 11th August Evening Shift
+1
-0

Three discs $$\mathrm{x}, \mathrm{y}$$ and $$\mathrm{z}$$ having radii $$2 \mathrm{~m}, 3 \mathrm{~m}$$ and $$6 \mathrm{~m}$$ respectively are coated on outer surfaces. The wavelength corresponding to maximum intensity are $$300 \mathrm{~nm}, 400 \mathrm{~nm}$$ and $$500 \mathrm{~nm}$$ respectively. If $$\mathrm{P}_{\mathrm{x}}, \mathrm{P}_{\mathrm{y}}$$ and $$\mathrm{P}_{\mathrm{z}}$$ are power radiated by them respectively then

A
$$\mathrm{P}_{\mathrm{X}}$$ is maximum
B
$$\mathrm{P}_{\mathrm{Z}}$$ is maximum
C
$$\mathrm{P}_{\mathrm{y}}$$ is maximum
D
$$\mathrm{P_x=P_y=P_z}$$
2
MHT CET 2022 11th August Evening Shift
+1
-0

When the rms velocity of a gas is denoted by '$$v$$', which one of the following relations is true?

($$\mathrm{T}=$$ Absolute temperature of the gas.)

A
$$\frac{\mathrm{v}^2}{\mathrm{~T}}=$$ constant
B
$$\mathrm{v}^2 \mathrm{T}=$$ constant
C
$$\mathrm{vT}^2=$$ constant
D
$$\frac{\mathrm{v}}{\mathrm{T}^2}=$$ constant
3
MHT CET 2022 11th August Evening Shift
+1
-0

A monoatomic gas $$\left(\gamma=\frac{5}{3}\right)$$ initially at $$27^{\circ} \mathrm{C}$$ having volume '$$\mathrm{V}$$' is suddenly compressed to one-eighth of its original volume $$\left(\frac{\mathrm{V}}{8}\right)$$. After the compression its temperature becomes

A
580 K
B
1200 K
C
1160 K
D
927 K
4
MHT CET 2022 11th August Evening Shift
+1
-0

Two monatomic ideal gases A and B of molecular masses '$$m_1$$' and '$$m_2$$' respectively are enclosed in separate containers kept at the same temperature. The ratio of the speed of sound in gas A to that in gas B is given by

A
$$\sqrt{\frac{\mathrm{m}_2}{\mathrm{~m}_1}}$$
B
$$\frac{\mathrm{m}_1}{\mathrm{~m}_2}$$
C
$$\sqrt{\frac{\mathrm{m}_1}{\mathrm{~m}_2}}$$
D
$$\frac{\mathrm{m}_2}{\mathrm{~m}_1}$$
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