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Two sources are to be coherent if the wa...

Two sources are to be coherent if the waves originated from them are of equal-

A

Amplitude

B

Wavelength

C

Wavelength an certain phase difference

D

Amplitude and equal wavelength.

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UNITED BOOK HOUSE-MODEL PAPER SET-02-EXERCISE
  1. Through a capacitor

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  2. According to Maxwell's theory the velocity of light in any medium-

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  3. Two sources are to be coherent if the waves originated from them are o...

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  4. The work fuknction of a material is 4 eV. The longest wavelength of li...

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  5. For an electron in the second orbit of Borhr hydroden atom, the angul...

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  6. The binary number of 2910

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  7. If both the length of an antennam and the wavelength of the singal to ...

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  8. What is the force on a current element I vecdl in a magnetic field?

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  9. When a ferromagnetic substance is changed into paramegnetic substances...

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  10. The e.m.f of and a.c. current E=158sin 200pit V. What is the voltage a...

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  11. Rainbow is not possible in the moon,Why?

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  12. Two lenses of focal lengths 6cm and 50 cm are used in construction of ...

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  13. Construct Not gate using only NAND gate.

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  14. The value of reistance of a carbon resistor is (42xx10^5+-5%)Omega. Wh...

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  15. A bulb 60V- 120W is connectd to 220 VDC line what reistance should be ...

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  16. What is microwave? Why is ti used in RADAR?

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  17. Write two name of e.m. wave. Give one similarity and one dissimilarity...

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  18. What its the number of revolution per second of revolving electron in ...

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  19. 92^(U^(238)) undergoes a series of changes by emitting alpha and beta ...

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  20. What is modem? How is it used?

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