Download App

Wave Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
Question
When the light source is approaching, the Doppler effect for light is known as:
✓

Answer

  1. Blue Shift
Explanation:
Optical light with a short wavelength is blue. When the wavelength of the light gets shortened by Doppler effect, we refer to the change in the wavelength as blue 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

Explore more

More "M.C.Q (1 Marks)" from Wave Optics→Wave Optics — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A hank of uninsulated wire consisting of seven and a half turns is stretched between two nails hammered into a board to which the ends of the wire are fixed. The resistance of the circuit between the nails is determined with the help of electrical measuring instruments. Determine the proportion in which the resistance will change if the wire is unwound so that the ends remain to be fixed to the nails.
→
The capacitance of a capacitor does not depend on:
→
Which of the following is correct when one cell is wrongly connected in series circuit?
→
Carbon has __________ isotopes.
→
The capacitor of an oscillatory circuit of negligible resistance is enclosed in a evacuated container. The frequency of the circuit is 150 kHZ and when the container is filled with a gas, the frequency changes by 100 HZ. The dielectric constant of the gas.
→
The value of magnetic potential at a distance $r$ from a pole strength $m$ is :
→
When a plane mirror is rotated through an angle θ then the reflected ray turns through the angle 2θ then the size of the image(a) Is doubled(b) Is halved(c) Remains the same(d) Becomes infinite
       
→
The potential at a point, due to a positive charge of $100 \ \mu C$ at a distance of $9 m ,$ is
→
Bohr’s atom model is the modification of Rutherford’s atom model by the application of:
→
A free neutron decays to a proton but a free proton does not decay to a neutron. This is because:
→