1
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A particle of mass '$$m$$' collides with another stationary particle of mass '$$M$$'. A particle of mass '$$\mathrm{m}$$' stops just after collision. The coefficient of restitution is

A
$$\frac{M}{m}$$
B
$$\frac{m+M}{M}$$
C
$$\frac{M-m}{M+m}$$
D
$$\frac{\mathrm{m}}{\mathrm{M}}$$
2
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

An air filled parallel plate capacitor has a capacity $$2 \mathrm{~pF}$$. The sepeartion of the plates is doubled and the interspace between the plates is filled with dielectric material, then the capacity is increased to $$6 ~\mathrm{pF}$$. The dielectric constant of the material is

A
3
B
6
C
2
D
4
3
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A black body has maximum wavelength '$$\lambda_{\mathrm{m}}$$' at temperature $$2000 \mathrm{~K}$$. Its corresponding wavelength at temperature $$3000 \mathrm{~K}$$ will be

A
$$\frac{4 \lambda_m}{9}$$
B
$$\frac{2 \lambda_m}{3}$$
C
$$\frac{3 \lambda_{\mathrm{m}}}{2}$$
D
$$\frac{9}{4} \lambda_{\mathrm{m}}$$
4
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A monoatomic gas at pressure '$$\mathrm{P}$$' having volume '$$\mathrm{V}$$' expands isothermally to a volume $$2 \mathrm{~V}$$ and then adiabatically to a volume $$16 \mathrm{~V}$$. The final pressure of the gas is $$\left(\gamma=\frac{5}{3}\right)$$

A
$$\frac{P}{64}$$
B
$$\frac{\mathrm{P}}{128}$$
C
$$\frac{P}{8}$$
D
$$\frac{\mathrm{P}}{32}$$
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