MHT CET 2021 21th September Morning Shift | MHT CET Year Wise Previous Years Questions

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

$$\frac{M}{m}$$

$$\frac{m+M}{M}$$

$$\frac{M-m}{M+m}$$

$$\frac{\mathrm{m}}{\mathrm{M}}$$

MHT CET 2021 21th September Morning Shift

MCQ (Single Correct Answer)

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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

MHT CET 2021 21th September Morning Shift

MCQ (Single Correct Answer)

-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

$$\frac{4 \lambda_m}{9}$$

$$\frac{2 \lambda_m}{3}$$

$$\frac{3 \lambda_{\mathrm{m}}}{2}$$

$$\frac{9}{4} \lambda_{\mathrm{m}}$$

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