1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The orbital magnetic moment associated with orbiting electron of charge '$$e$$' is

A
inversely proportional to angular momentum
B
directly proportional to mass of electron
C
directly proportional to angular momentum
D
inversely proportional to charge on electron
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An ideal gas expands adiabatically. $$(\gamma=1 \cdot 5)$$ To reduce the r.m.s. velocity of the molecules 3 times, the gas has to be expanded

A
81 times
B
27 times
C
9 times
D
3 times
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A metal surface of work function $$1 \cdot 13 \mathrm{~eV}$$ is irradiated with light of wavelength $$310 \mathrm{~nm}$$. The retarding potential required to stop the escape of photoelectrons is [Take $$\frac{\mathrm{hc}}{\mathrm{e}}=1240 \times 10^{-9} \mathrm{SI}$$ units]

A
1.13 V
B
2.87 V
C
3.97 V
D
4.23 V
4
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two cars A and B start from a point at the same time in a straight line and their positions are represented by $$\mathrm{R}_{\mathrm{A}}(\mathrm{t})=$$ at $$+\mathrm{bt}^2$$ and $$\mathrm{R}_{\mathrm{B}}(\mathrm{t})=x \mathrm{t}-\mathrm{t}^2$$. At what time do the cars have same velocity?

A
$$\frac{\mathrm{x}-\mathrm{a}}{2(\mathrm{~b}+1)}$$
B
$$\frac{\mathrm{x}+\mathrm{a}}{2(\mathrm{~b}-1)}$$
C
$$\frac{\mathrm{x}-\mathrm{a}}{(\mathrm{b}+1)}$$
D
$$\frac{\mathrm{x}+\mathrm{a}}{(\mathrm{b}-1)}$$
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