Classical Mechanics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 49 - 50 of 69

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Question number: 49

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

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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 50

» Classical Mechanics » Symmetry

MCQ▾

Question

The character table of Equation , the group of symmetries of an equilateral triangle is given below,

Table for character of C3v

In above table character table of C3v, the group of symmetries of an equilateral triangle is given.

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

Equation

In the above Equation denotes the three classes of Equation , containing 1, 3 and 2 elements respectively, and Equation are the characters of the three irreducible representations Equation and Equation of Equation . The entries Equation and Equation in this table are, respectively –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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