EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 1 February 2023 Shift 1>Q 145

EASY

JEE Main

IMPORTANT

Earn 100

The mass of proton, neutron and helium nucleus are respectively $1.0073 u, 1.0087 u and 4.0015 u$ . The binding energy of helium nucleus is:

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Important Questions on Atoms and Nuclei

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 1 February 2023 Shift 1>Q 146

A light of energy

12.75 eV

is incident on a hydrogen atom in its ground state. The atom absorbs the radiation and reaches to one of its excited states. The angular momentum of the atom in the excited state is

\frac{x}{π} \times 10^{- 17} eVs

. The value of

x

is ______ (use

h = 4.14 \times 10^{- 15} eVs, c = 3 \times 10^{8} m s^{- 1}

)

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 1 February 2023 Shift 2>Q 147

An electron of a hydrogen like atom, having $Z = 4$ , jumps from $4^{t h}$ energy state to $2^{n d}$ energy state, The energy released in this process, will be: (Given $R c h = 13.6 e V$ )

Where $R =$ Rydberg

constant $c =$ Speed of light in vacuum

$h =$ Planck's constant

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 21 - Atoms and Nuclei>JEE Main - 1 February 2023 Shift 2>Q 148

Nucleus

A

having

Z = 17

and equal number of protons and neutrons has

1.2 MeV

binding energy per nucleon. Another nucleus

B

of

Z = 12

has total

26

nucleons and

1.8 MeV

binding energy per nucleons. The difference of binding energy of

B

and

A

will be ______

MeV

.