Classical Mechanics-Special Theory of Relativity (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 9 - 13 of 19

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Question number: 9

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

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Appeared in Year: 2011

MCQ▾

Question

The acceleration due to gravity on the surface of Earth is approximately 2.6 times that on the surface of Mars. Given that the radius of Mars is about one half the radius of Earth, the ratio of the escape velocity on Earth to that on Mars is approximately. - (June)

Choices

Choice (4)Response

a.

1.3

b.

2.3

c.

1.1

d.

5.2

Question number: 10

» Classical Mechanics » Special Theory of Relativity » Mass-Energy Equivalence

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Appeared in Year: 2011

MCQ▾

Question

Given that the ground state energy of the hydrogen atom is , the ground state energy of positronium (which is a bound state of an electron and a positronium) is – (December)

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 11

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

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Appeared in Year: 2012

MCQ▾

Question

What is the proper time interval between the occurrences of two events if in one inertial frame the events are separated by and occurs apart? (June)

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 12

» Classical Mechanics » Special Theory of Relativity » Mass-Energy Equivalence

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Appeared in Year: 2011

MCQ▾

Question

The minimum energy of an electron (the rest mass of which is 0.5 MeV) that can emit Cerenkov radiation while passing through water (of refractive index 1.5) is approximately – (December)

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 13

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

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Appeared in Year: 2011

MCQ▾

Question

Two gravitating bodies A and B with masses and , respectively, are moving I circular orbit. Assume that and let the radius of the orbit of body A be . If the body A is losing mass adiabatically, its orbital radius is proportional to –

(June)

Choices

Choice (4)Response

a.

b.

c.

d.

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