EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2020>Q 8

EASY

12th Nagaland Board

IMPORTANT

Earn 100

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of the nuclear reactor.

Important Questions on Nuclei

EASY

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2018>Q 1

Define atomic mass unit. Find the energy equivalent to

1 u

(atomic mass unit).

MEDIUM

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2018>Q 2

Mass of an electron is

9.11 \times 10^{- 31} kg

. Calculate mass-energy of electron in Joule as well as electron volts. Given that speed of light in vacuum

c = 3.0 \times 10^{8} {ms}^{- 1}

and

1 eV = 1.60 \times 10^{- 19} J

.

EASY

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2018>Q 3

Calculate the binding energy per nucleon for

{}_{10}^{20}{Ne}

. Given that

m_{H} = 1.007825 u, m_{n} = 1.008665 u

and mass of

{}_{10}^{20}{Ne}

atom

19.992440 u

.

MEDIUM

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2018>Q 4

Define the terms “half-life period” and “decay constant” of a radioactive sample. Derive the relation between them.

HARD

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2018>Q 5

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of a nuclear reactor and write the function of each part.

EASY

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2019>Q 6

Two nuclei have mass numbers in the ratio

1 : 8

. What is the ratio of their nuclear radii?

EASY

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2019>Q 7

State the radio-active decay law. Deduce the relation

N = N_{o} e^{- 2 λt}

, where the symbols have their usual meanings

EASY

12th Nagaland Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 13 - Nuclei>Nagaland Board-2020>Q 8

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of the nuclear reactor.