COMEDK 2024 Afternoon Shift | Atoms and Nuclei Question 7 | Physics

In a hydrogen atom, if electron is replaced by a particle which is 40 times heavier but has the same charge, then, the ratio of the radius of the first excited state of a normal hydrogen atom to the ground state of the above atom is

40 : 1

1 : 160

1 : 40

160 : 1

COMEDK 2024 Afternoon Shift

MCQ (Single Correct Answer)

-0

The shortest wavelengths of Paschen, Lymen and Balmer series are in the ratio

$$9: 1: 4$$

$$4: 1: 9$$

$$2:1:3$$

$$3: 1: 2$$

COMEDK 2024 Afternoon Shift

MCQ (Single Correct Answer)

-0

The radius of a nucleus as measured by electron scattering is $$4.8 \mathrm{~fm}$$. The mass number of nucleus is most likely to be

COMEDK 2024 Morning Shift

MCQ (Single Correct Answer)

-0

The ratio of the radii of the nucleus of two element $$\mathrm{X}$$ and $$\mathrm{Y}$$ having the mass numbers 232 and 29 is:

4 : 1

1 : 4

1 : 2

2 : 1

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