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Radio wave of fixed amplitude can be pro...

Radio wave of fixed amplitude can be produced by-

A

using filter

B

using rectifier

C

using FET

D

using oscillator

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UNITED BOOK HOUSE-QUESTION PAPER 2017-EXERCISE
  1. Radio wave of fixed amplitude can be produced by-

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  2. For a transistor if beta =100, the alpha will be-

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  3. A radioactive element emits 2 alpha-particles and 3 beta-particles . T...

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  4. When green light is incident on a certain metal surface electrons are ...

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  5. A paralles beam of white light falls on one face of a prism. The light...

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  6. A luminous object is separated from a screen by a distance D. What is ...

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  7. Electro magnetic wave does not carry-

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  8. If L and R denote inductance and resistance respectively, then the dim...

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  9. A proton with a speed of 2xx10^7 m.s-1 enters a magnetic field of flux...

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  10. A straight conductor of length l m carrying a current 1A is bent in th...

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  11. Mutual inductance of two coils can be increased by

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  12. Two capacitors of capacitances C1" and "C2, are connected in parallel....

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  13. The number of electrons in 2 coulomb of charge is-

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  14. Write down the values of (barX+X) and (X.barX) in Boolean algebra.

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  15. The cirtical angle of a transparent crystal for green light is 30^(@)....

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  16. What will be the change in focal length f of a concave mirror when imm...

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  17. State one difference between a dynamo and a motor.

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  18. On what physical quantity does the magnetic moment of an electron revo...

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  19. Is Burlow's wheel a motor? Give reason.

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  20. Very high or very low resistance cannot be measured correctly by using...

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