Physics XII - Physical World 02

Question : 1

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Which of the following is long range force?

Options:

	Strong nuclear force
	Weak nuclear force
	Gravitational force
	All of these

Solution :

Electromagnetic and gravitational forces
are long range forces.

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Question : 2

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Exchange particle in gravitational force is

Options:

	Meson
	Leptons
	Neutrino
	Graviton

Solution :

In gravitational interaction exchange
particle is graviton.

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Question : 3

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Electro-weak force includes

Options:

	Strong nuclear force and gravitational force
	Weak nuclear force and gravitational force
	Weak nuclear force and electromagnetic force
	Gravitational force and electromagnetic force

Solution :

Weak nuclear force is a part of
electromagnetic force. This was stated and
then verified. These together are known as
electro-weak force.

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Question : 4

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Which of the following is not a fundamental force?

Options:

	Strong nuclear force
	Weak nuclear force
	van der Waals force
	Gravitational force

Solution :

van der Waals force is a derived forced.

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Question : 5

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Which of the followings never experiences strong nuclear force?

Options:

	Proton
	Neutron
	Neutrino
	Both (b) & (c)

Solution :

Lepton family members never experience
strong nuclear force e.g., electron,
neutrino.

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Question : 6

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Who unified electromagnetism and optics?

Options:

	Newton
	Abdus Salam
	Maxwell
	Einstein

Solution :

Electromagnetism unified with optics by
Maxwell.

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Question : 7

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Who verified experimentally the predictions of theory of electro weak force?

Options:

	S. Glashow
	S. Weinberg
	Oersted
	Carlo Rubia

Solution :

Carlo Rubia and Simon van der Meer
verified experimentally the predictions of
theory of electroweak force.

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Question : 8

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Using the conservation laws of energy and momentum for β-decay Wolfgang Pauli predicted the existence of a new particle emitted in β decay along with electron that is now known as

Options:

	Antineutrino
	Neutrino
	Pion
	Muon

Solution :

W. Pauli predicted the emission of a new
particle in β decay that is now known as
neutrino.

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Question : 9

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Neutrino and antineutrino experience only the weak interaction besides

Options:

	Electromagnetic interaction
	Gravitational interaction
	Strong nuclear interaction
	Both (a) & (c)

Solution :

Neutrino and antineutrino experience weak
nuclear force along with gravitational force.

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Question : 10

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Which one of the followings is not a fundamental conservative law?

Options:

	Law of conservation of charge
	Law of conservation of linear momentum
	Law of conservation of angular momentum
	Law of conservation of mass

Solution :

Law of conservation of a mass is not a
fundamental conservative law.