MCQ
When the light source is moving away, the Doppler effect for light is known as:
  • Red Shift
  • B
    Green Shift
  • C
    Yellow Shift
  • D
    Blue Shift

Answer

Correct option: A.
Red Shift

When the wavelength of the light gets lengthened by the Doppler shift, we refer to the change as red shift.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

An object is placed $12 cm$ to the left of a converging lens of focal length $8 cm. $ Another converging lens of $6 cm$ focal length is placed at a distance of $30 cm$ to the right of the first lens. The second lens will produce
Electric conduction in a semiconductor takes place due to :
Two charges $q_1, q_2$ exert some amount of force on each other. What will happen to the force on $q_1$ if another charge q3 is brought close to them?
In the figure given below, the current passing through $6\,\Omega $ resistor is ........... $ampere$
A wire of length $L$ is bent in the form of a circular coil and current $i$ is passed through it. If this coil is placed in a magnetic field then the torque acting on the coil will be maximum when the number of turns is
Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is
A source voltage of 8V drives the diode in fig. through a current-limiting resistor of 100 ohm. Then the magnitude of the slope load line on the V-I characteristics of the diode is
A car battery of $e.m.f$. $12\,V$ and internal resistance $5 \times {10^{ - 2}}\,\Omega $, receives a current of $60\; A$ from external source, then terminal voltage of battery is 
A particle of charge +q and mass m moving under the influence of a uniform electric field $E\hat I$ and a uniform magnetic field $ B\hat K$ follows trajectory from P to Q as shown in figure. The velocities at P and Q are v$\hat I$ and -2v$\hat J$ respectively. Which of the following statement(s) is/are correct
The internal resistance of a $2.1\, V$ cell which gives a current of $0.2\, A$ through a resistance of $10\,\Omega$ is ............. $\Omega$