CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 37 - 38 of 463

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Question number: 37

» Quantum Mechanics » Dirac Notation for State Vectors

Appeared in Year: 2014

MCQ▾

Question

Let Equation and Equation denoted the normalized eigenstate of a particle with energy eigenvalue Equation and Equation respectively, withEquation . At time Equation the particle is prepared in a state Equation . The shortest time T at which Equation will be orthogonal to Equation is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 38

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2012

MCQ▾

Question

Three charges are located on the circumference of a circle of radius R as shown in the figure below. The two charges Q subtend an angle 900 at the centre of the circle. The charge q is symmetrically placed with respect to the charges Q. If the electric field at the centre of the circle zero, what is the magnitude of Q? (December)

Three charges located on a circle

Three Charges Located on a Circle

In figure three charges are located on the circumference of a circle of radius R. The two charges Q subtend an angle 900 at the centre of the circle. The charge q is symmetrically placed with respect to the charges Q.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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