Tag: physics

Questions Related to physics

In Kaiga Atomic Power reactor plant, the fuel that can be used is

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. Coal

  2. Uranium

  3. Petrol

  4. Natural gas

Show answer
Correct Option: B
Explanation:

Kaiga Generating Station is a nuclear power generating station situated at Kaiga, near the river Kali, in Uttar Kannada district of Karnataka, India. The plant has been in operation since March 2000 and is operated by the Nuclear Power Corporation of India. The plant is fueled by indigenous Uranium.

Hence correct answer is option B. 

The fuel used in nuclear power plants is

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. U-235

  2. U-238

  3. U-236

  4. enriched U-235

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Correct Option: D

The fusion reactions occur at

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. low pressures

  2. high temperature

  3. extremely high temperature

  4. high temperature and low presences

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Correct Option: C

Nuclear energy may become an important source of energy in the future.
Which one of the following statements about nuclear energy is NOT true?

physics towards green energy electricity from nuclear energy nuclear power nuclear energy

  1. Large amounts of energy are produced by a small mass of fuel

  2. Nuclear energy has no harmful effects

  3. Nuclear energy produces heat on the sun

  4. Uranium is an important fuel for nuclear energy

Show answer
Correct Option: B
Explanation:

Nuclear fuels are non-renewable sources of energy and large amount of radioactive materials, which are toxic in nature, are released in the environment which are extremely hazardous to the health of living being for thousands of years. Thus nuclear energy also has some harmful effects.

Whereas the statements given in (A), (C) and (D) are true.

An atom bomb works on :

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Electrical energy

  2. Heat energy

  3. Mechanical energy

  4. Atomic energy

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Correct Option: D
Explanation:

Atomic energy 

Atomic energy is the energy that is created by splitting apart the nuclei of atoms.  The atomic energy is released during the process of fission.  The basic principle of atom bomb is uncontrolled nuclear fission. 

The essential distinction between X-rays and $\gamma$-rays is that the $\gamma$-rays :

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. have greater ionizing power than X-rays

  2. emanate from nucleus, white X-rays emanate from outer part of the atom

  3. have smaller wave-length than X-rays

  4. none of the above 

Show answer
Correct Option: A
Explanation:

A 

Gamma-rays have the highest energy in the EMR spectrum and their waves have the shortest Wavelength. Gamma rays are lot more dangerous and hazardous to human health than X-rays. Moreover gamma rays are the highly penertating and highly energetic ionizing radiation. 

Principle of Hydrogen bomb is .................. reactions.

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Uncontrolled fusion

  2. Fission

  3. Controlled fusion

  4. None of these

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Correct Option: A

In hydrogen bomb we use the process of

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Fusion

  2. Fission

  3. Both (1) & (2)

  4. None of these

Show answer
Correct Option: A
Explanation:

In hydrogen bomb we use the process of fusion.

Hence,
option $A$ is correct answer.

Which bomb works on the principle of Nuclear fusion ?

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Atom bomb

  2. Hydrogen bomb

  3. Neutron bomb

  4. Nuclear reactor

Show answer
Correct Option: B
Explanation:

Nuclear fusion is a nuclear reaction in which two or more atomic nuclei at a very high speed and join to form a new type of atomic nucleus. Fusion reactions are high energy reactions in which two lighter atomic  nuclei fuse to form a heavier nucleus. This fusion reaction is taking place in hydrogen bomb.

The temperature of a normal human being is

physics heat application of various thermometric scales different types of thermometers measuring temperature

  1. $31^{o} C$

  2. $37^{o} C$

  3. $20^{o} C$

  4. $50^{o} C$

Show answer
Correct Option: B
Explanation:

$98.4^{o} F$ is temperature of normal human being. Which is also equal to $37^{o} C$.