slow down the bombarding neutrons

accelerate the bombarding neutrons

EASY

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Is the cooling water in a nuclear reactor radioactive?

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Important Questions on Nuclear Physics

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Define nuclear fission.

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

A fission reaction is given by

{}_{92}^{236}U \to {}_{54}^{140}{X e} + {}_{38}^{94}{S r} + x + y

, where

x

and

y

are two particles. Considering

{}_{92}^{236}U

to be at rest, the kinetic energies of the products are denoted by

K_{X e}, K_{S r}, K_{x} (2 M e V)

and

K_{y} (2 M e V)

, respectively. Let the binding energies per nucleon of

{}_{92}^{236}U, {}_{54}^{140}{X e}

and

{}_{38}^{94}{S r}

7.5 MeV

8.5 MeV

, and

8.5 MeV

respectively. Considering different conservation laws, the correct option(s) is (are)

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Rewrite and complete the following nuclear reaction by filling in the atomic number of Ba and mass number of Kr:

${}_{92}^{235}U + {}_{0}^{1}n \to {}_{___}^{144}{Ba} + {}_{36}^{___}{Kr} + 3 {}_{0}^{1}n + Energy$

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

A nuclear fission is said to be critical when multiplication factor of

k

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

If the energy released in the fission of one nucleus is

3.2 \times 10^{- 11} J

, then number of nuclei required per second in a

16 kW

power plant is

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Moderator is used to

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

When a uranium isotope

{}_{92}^{235}U

is bombarded with a neutron, it generates

{}_{36}^{89}{Kr}

, three neutrons and:

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

For pair production i.e. for the production of electron and positron, incident photon must have minimum frequency of the order of -

HARD

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

$_{35} X^{88}$ is an unstable isotope which decays in two successive steps to produce stable isotope of $_{35} X^{88} \overset{I}{\to} Z {\overset{II}{\to}}_{36} Y^{87}$ . The correct statement (s) is/are:

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

The energy released per fission of a ₉₂U²³⁵ nucleus is nearly

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Nuclear fission can be explained based on

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Nuclear fission can be explained based on

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Which one is correct about fission?

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

The average translational kinetic energy depends only on _____ temperature.

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

_____ are used at nuclear power plants to generate electricity and also used in nuclear marine propulsion.

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Coolant in a nuclear reactor is used to remove _____generated from it.

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

Nuclear fission can be explained based on

MEDIUM

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

An atomic power nuclear reactor can deliver $300 MW$ . The energy released due to the fission of each nucleus of the uranium atom $U^{238}$ is $170 MeV$ . The number of uranium atoms fissioned per hour will be?

EASY

Physics>Modern Physics>Nuclear Physics>Nuclear Fission

_____are considered to be relatively safe because the fuel is already dissolved in liquid and they operate at lower pressures than do conventional nuclear reactors ?

Is the cooling water in a nuclear reactor radioactive?

Important Questions on Nuclear Physics

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