Download App

Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
Two light waves of intensities I and 4I, makes fringes by interference. The phase difference between the waves at point A of the screen is $\pi / 2$ and at point B is $\pi$. Then at point A and B the difference between the resulting intensities is :
  • A
    2 I
  • ✓
    4 I
  • C
    5 I
  • D
    I
✓

Answer

Correct option: B.
4 I
(B) - 4 I

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→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

The ionisation potential of H-atom is 13.6 V. When it is excited from ground state by monochromatic radiations of 970.6  the number of emission lines will be (according to Bohr’s theory)

(a) 10

(b) 8

(c) 6  

(d) 4
→
The potential difference applied to an X-ray tube is increased. As a result, in the emitted radiation:
→
If we increase the driving frequency in a circuit with a purely resistive load, then amplitude VR​.
→
A very thin film in reflected white light appears:
→
A hollow tube is carrying an electric current along its length distributed uniformly over its surface. The magnetic field:
→

In the disintegration series   The value of Z and A respectively will be

(a) 92, 236

(b) 88, 230

(c) 90, 234

(d) 91, 234
→
In a hydrogen atom, which of the following electronic transitions would involve the maximum energy change:
→
If two charges of 1 coulomb each are placed 1km apart in vacuum, the force between them will be:
→

The penetration of light into the region of geometrical shadow is called

(a) Polarisation

(b) Interference

(c) Diffraction

(d) Refraction
→

Two conductors made of the same material are connected across a common potential difference. Conductor A has twice the diameter and twice the length of conductor B. The power delivered to the two conductors  and   respectively is such that   equals to

(a) 0.5

(b) 1.0

(c) 1.5 

(d) 2.0
→