Home
Class 12
PHYSICS
Two electromagnetic waves create (0, 0, ...

Two electromagnetic waves create (0, 0, 1) Vm and `(-1,0,1) Vm^(-1)` displacement at one point any instance. So resultant intensity at this point will be...... `Wm^(-2)`

A

`sqrt(5)`

B

17

C

1

D

5

Text Solution

Verified by Experts

The correct Answer is:
D
`vece= vece_(1)+ vece_(2)`
`=(0,0,1)+(-1,0,1)`
`=(-1,0,2)`
`:.e^(2)=(-1)^(2)+(0)^(2)+(2)^(2)=1++4=5and I prop d`
`:.I= ke^(2)`
`:.I=1xx5`
`:.I=5 Wm^(-2)`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    KUMAR PRAKASHAN|Exercise SECTION-C NCERT Exemplar Solution (Long Answer Type Questions)|5 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos

Similar Questions

Explore conceptually related problems

When two progressive waves of intensity I_(1) and I_(2) but slightly different frequencies superpose, the resultant intensity fluctuates between :-

Two charges q_(1) and q_(2) are placed at (0, 0, d) and (0, 0, - d) respectively. Find locus or points where the potential is zero.

Intensity of electromagnetic wave is 0.02 "wattmeter"^(-2) and its velocity in space is 3xx10^(8)ms^(-1) then energy density of radiation is ….. Jm^(-2)

A plane electromagnetic wave travelling along X - direction has electric field of amplitude 300 Vm^(-1) , directed along the Y - axis (a) What is the intensity of the wave ? (b) If the wave falls on a perfectly absorbing sheet of area 3.0 m^(2) , at what rate is the momentum delivered to the sheet and what is the radiation pressure exerted on the sheet ? [epsilon_(0)=8.854xx10^(-12)C^(2)N^(-1)m^(-2), c=3xx10^(8)ms^(-1)]

In the figure , the intensity of waves arriving at D from two coherent soucrces s_(1) and s_(2) is I_(0) . The wavelength of the wave is lambda = 4 m . Resultant intensity at D will be

Calculate the distance between two points (0, -1, 1) and (3, 3, 13) .

Frequency of electromagnetic wave is 25MHz. The value of electric field intensity at any point at any time in wave in wave is 6.3 Vm^(-1) . The value of magnetic field at that point is …… Wb//m^(2) .

If the distance between the points (a, 0, 1) and (0, 1, 2) is sqrt27 , then the value of a is ______ .

If P(0, 1, 2), Q(4, -2, 1) and O(0, 0, 0) are distinct points the manglePOQ = ______.

Statement I Tangent drawn at the point (0, 1) to the curve y=x^(3)-3x+1 meets the curve thrice at one point only. statement II Tangent drawn at the point (1, -1) to the curve y=x^(3)-3x+1 meets the curve at one point only.

KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. Write the condition of destructive interference in terms of path diffe...

    Text Solution

    |

  2. If distance between source and screen increases by 2%, then intensity ...

    Text Solution

    |

  3. Two electromagnetic waves create (0, 0, 1) Vm and (-1,0,1) Vm^(-1) dis...

    Text Solution

    |

  4. The maximum intensity obtained due to the superposition of waves of 'n...

    Text Solution

    |

  5. Interference pattern is formed from two coherent sources of same inten...

    Text Solution

    |

  6. In a Young's experiment, the distance between two slits is 0.2 mm. If ...

    Text Solution

    |

  7. The shape of interference fringe obtained on screen by using monochrom...

    Text Solution

    |

  8. Path difference between two waves superposing at one point is 132, so ...

    Text Solution

    |

  9. In Young's experiment, dark fringe of 5th order is obtained at point P...

    Text Solution

    |

  10. In Young's experiment distance between 5^(th) dark fringe and 3rd brig...

    Text Solution

    |

  11. In double slit experiment, the point on the screen where 3^(rd) order ...

    Text Solution

    |

  12. If path difference between two wave superposing at a point is (3)/(2) ...

    Text Solution

    |

  13. In Young's experiment distance between two consecutive dark fringes is...

    Text Solution

    |

  14. If white light is used instead of sodium light in the Young's experime...

    Text Solution

    |

  15. only the central fringe will be white, all other will look colourful. ...

    Text Solution

    |

  16. In Young's experiment if mica disc of thickness t and refractive index...

    Text Solution

    |

  17. A glass plate of thickness d and refractiv index n is placed on the pa...

    Text Solution

    |

  18. In the Young's double slit experiment, the slits are 0.4 cm apart and ...

    Text Solution

    |

  19. 92 fringes are obtained in the definite distance R on screen by Young'...

    Text Solution

    |

  20. In Young's slit experiment, if the distance between two slits is halve...

    Text Solution

    |