1
MHT CET 2023 11th May Evening Shift
+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 Morning Shift
+1
-0

An electron in the hydrogen atom jumps from the first excited state to the ground state. What will be the percentage change in the speed of electron?

A
25%
B
50%
C
75%
D
100%
3
MHT CET 2023 11th May Morning Shift
+1
-0

In a radioactive disintegration, the ratio of initial number of atoms to the number of atoms present at time $$t=\frac{1}{2 \lambda}$$ is [$$\lambda=$$ decay constant]

A
$$\frac{1}{\mathrm{e}}$$
B
$$\sqrt{\mathrm{e}}$$
C
e
D
2e
4
MHT CET 2023 10th May Evening Shift
+1
-0

The ratio of the velocity of the electron in the first Bohr orbit to that in the second Bohr orbit of hydrogen atom is

A
$$8: 1$$
B
$$2: 1$$
C
$$4: 1$$
D
$$1: 4$$
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