Recent questions tagged moving sources

+3 votes

1 answer

Obtain an expression for the Doppler linewidth for a spectral line of wavelength λ emitted by

asked Mar 30, 2019 in JEE by kratos

+2 votes

1 answer

A gas consists of atoms of mass m being in thermodynamic equilibrium at temperature T.

asked Mar 15, 2019 in JEE by kratos

+3 votes

1 answer

How fast should a car move for the driver to perceive a red traffic light (λ ≈ 0.70 μm) as a green one (λ' ≈ 0.55 μm)?

asked Mar 6, 2019 in JEE by kratos

+3 votes

1 answer

A source emitting electromagnetic signals with proper frequency ω0 = 3.0.10^10 *^-1 moves at a constant velocity v = 0.80 c

asked Feb 19, 2019 in JEE by kratos

+1 vote

1 answer

In Column-I, certain events are mentioned and in Column-II wavelengths are mentioned .

asked Feb 17, 2019 in JEE by kratos

+1 vote

1 answer

One of the spectral lines of atomic hydrogen has the wavelength λ = 656.3 nm. Find the Doppler shift Δλ of that line

asked Feb 16, 2019 in JEE by kratos

+1 vote

1 answer

In first angle projection the order of object, plane and observer, as viewed from the front is?

asked Feb 10, 2019 in JEE by kratos

+2 votes

1 answer

The speed of an electromagnetic wave in a material medium is given by v = 1/√(με),

asked Jan 19, 2019 in Class 12 by kratos

+3 votes

1 answer

Find the aperture angle of a cone in which all the stars located in the semi-sphere for an observer on the Earth

asked Jan 16, 2019 in JEE by kratos

+2 votes

1 answer

When a spectral line of wavelength λ = 0.59 μm is observed in the directions to the opposite edges of the solar

asked Dec 11, 2018 in JEE by kratos

+3 votes

1 answer

Which physical quantity associated with an electromagnetic wave does not change when it propagates from one medium into another medium?

asked Nov 13, 2018 in JEE by kratos

+2 votes

1 answer

A plane electromagnetic wave of frequency ω0 falls normally on the surface of a mirror approaching with a relativistic velocity V.

asked Nov 7, 2018 in JEE by kratos

+1 vote

1 answer

An observer moves with velocity v1 = 1/2c along a straight line. In front of him a source of monochromatic light moves

asked Oct 20, 2018 in JEE by kratos

+3 votes

1 answer

Demonstrate that the angle θ between the propagation direction of light and the x axis

asked Sep 25, 2018 in JEE by kratos

+3 votes

1 answer

Aberration of light is the apparent displacement of stars attributable to the effect of the orbital motion of the Earth.

asked Sep 15, 2018 in JEE by kratos

+2 votes

1 answer

An object moving at constant velocity in an inertial frame must: A. have a net force on it

asked Aug 27, 2018 in JEE by kratos

+1 vote

1 answer

How fast does a certain nebula recede if the hydrogen line λ = 434 nm in its spectrum is displaced by 130 nm toward longer wavelengths?

asked Aug 25, 2018 in JEE by kratos

+3 votes

1 answer

The wavelength for n = 3 to n = 2 transition of the hydrogen atom is 656.3 nm. What are the wavelength

asked Aug 18, 2018 in Physics by kratos

+3 votes

1 answer

Show that for slow speeds, the Doppler shift can be approximated as Δλ/λ = v/c

asked Aug 16, 2018 in JEE by kratos

+3 votes

1 answer

Taking into account that the wave phase ωt — kx is an invariant, i.e. it retains its value on transition from one

asked Jul 17, 2018 in JEE by kratos

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