The intensities of two light sources are I and 9I respectively. If the pha

Question

The intensities of two light sources are I and 9I respectively. If the phase difference between the waves emitted by them is

π

, then the resultant intensity at the point of observation will be

Options:

A . 3I

B . 4I

C . 10I

D . 82I

Answer: Option B
:
B

I = I_{1} + I_{2} + 2 \sqrt{I_{1} I_{2}} c o s ϕ = 4 I

Was this answer helpful ?

Next Question

More Questions on This Topic :

Question 1. In Young's double slit experiment the phase difference between the waves reaching the central fringe and fourt....reaching the central fringe and fourth dark fringe will be

Question 2. The fringe width changes from 0.24 mm to 0.3 mm when the screen is moved by 20 cm away from the slits separated by ....slits separated by 2 mm. calculate the wavelength of light used.

Question 3. A double convex lens, lens made of a material of refractive index μ1 is placed inside two liquids or refractive indice....of light is incident on the lens from the left.

Question 4. On a glass plate a light wave is incident at an angle of 60∘. If the reflected and the refracted waves are mutually pe....waves are mutually perpendicular, the refractive index of material is

Question 5. The refractive index of a piece of transparent quartz is the greatest for[MP PET 1985, 94]....

Question 6. The ratio of the refractive index of red light to blue light in air is [CPMT 1978]....

Question 7. When light is incident on a medium at angle i and refracted into a second medium at an angle r, the graph of sin i vs s....shown in the graph. From this, one can conclude that

Question 8. Refractive index for a material for infrared light is [CPMT 1984]....

Question 9. If ε0 and μ0 are respectively, the electric permittivity and magnetic permeability of free space, ;....in a medium, the refractive index of the medium is

Question 10. In the adjoining diagram, a wavefront AB, moving in air is incident on a plane glass surface XY. Its position CD after r....respect to air (μ=1 ) will be equal to

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

DSP Combined 1 Free Revision Test SAIL JO E-0

GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0

BSP Plant Specific Review Test SAIL JO E-0

BSL Combined 1 Free Revision Test SAIL JO E-0

GFM Combined 1 Free Revision Test SAIL JO E-0