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The mass number of a nucleus is:
Concepts of Physics by H. C. Verma
Concepts of Physics

Class 12

HC Verma Part II

Author:
H. C. Verma
Subject:
Physics
1

Chapter 1: Heat and Temperature

64 questions

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2

Chapter 2: Kinetic Theory of Gases

100 questions

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3

Chapter 3: Calorimetry

41 questions

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4

Chapter 4: Laws of Thermodynamics

51 questions

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5

Chapter 5: Specific Heat Capacities of Gases

65 questions

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6

Chapter 6: Heat Transfer

82 questions

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7

Chapter 7: Electric Field and Potential

106 questions

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8

Chapter 8: Gauss's Law

46 questions

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9

Chapter 9: Capacitors

94 questions

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10

Chapter 10: Electric Current in Conductors

126 questions

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11

Chapter 11: Thermal and Chemical Effects of Electric Current

46 questions

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12

Chapter 12: Magnetic field

91 questions

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13

Chapter 13: Magnetic field due to a Current

92 questions

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14

Chapter 14: Permanent Magnets

54 questions

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15

Chapter 15: Magnetic Properties of Matter

31 questions

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16

Chapter 16: Electromagnetic Induction

133 questions

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17

Chapter 17: Alternating Current

51 questions

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18

Chapter 18: Electromagnetic Waves

30 questions

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19

Chapter 19: Electric Current through Gases

49 questions

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20

Chapter 20: Photoelectric Effect and Wave Particle Duality

69 questions

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21

Chapter 21: Bohr'a Model and Physics of the Atom

75 questions

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22

Chapter 22: X-rays

59 questions

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23

Chapter 23: Semiconductors and Semiconductor devices

71 questions

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24

Chapter 24: The Nucleus

94 questions

Q1
As compared to atom has:
Q2
The mass number of a nucleus is:
Q3
The graph of ln(R/ ) versus ln A(R = radius of a nucleus and A = its mass number) is:
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Question
Easy
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Solving time: 2 mins

The mass number of a nucleus is:

A
Always less than its atomic number

B
Always more than its atomic number

C
Equal to its atomic number

D
Sometimes more than and sometimes equal to its atomic number

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Views: 6,156 students

Updated on: Jan 27, 2023

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Concepts of Physics (HC Verma Part II)

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Text SolutionText solutionverified iconVerified

sometimes more than and sometimes equal to its atomic number
Mass number of a nucleus is defined as the sum of the number of neutron and protons present in the nucleus, i.e. the number of nucleons in the nucleus, whereas atomic number is equal to the number of protons present. Therefore, the atomic number is smaller than the mass number. But in the nucleus (like that of hydrogen  ), only protons are present. Due to this, the mass number is equal to the atomic number.
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Consider the fusion in helium plasma. Find the temperature at which the average thermal energy 1.5 kT equals the Coulomb potential energy at 2 fm.
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Concepts of Physics (HC Verma Part II)

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Question 2
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The heavier nuclei tend to have larger N/Z ratio because:
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  4. Coulomb forces have longer range compared to the nuclear forces
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Concepts of Physics (HC Verma Part II)

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Question Text
The mass number of a nucleus is:
Updated OnJan 27, 2023
TopicNuclei
SubjectPhysics
ClassClass 12
Answer TypeText solution:1 Video solution: 2
Upvotes174
Avg. Video Duration9 min