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Long distance short-wave radio broadcast...

Long distance short-wave radio broadcasting uses

A

ground wave

B

ionospheric wave

C

direct wave

D

sky wave

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The correct Answer is:
D
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Long distance short - wave radio frequency broadcasting uses:

Long distance radio broadcasts use short wave bands. Explain why?

A : Long distance radio broadcasts use short-wave bands. R : Ionosphere reflectes waves in these bands.

Statement 1: Long distance radio broadcasts use short wave bands. Statement 2: Short wavelength signals are reflected by the ionosphere.

Give reasons for the following: (i) Long distance radio broadcasts use short-wave bands. (ii) The small ozone layer on top of the stratosphere is crucial for human survival. (iii) Satellites are used for long distance TV transmission.

Why long distance radio broadcasts use shortwave bands?

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 23-Paper-1(PHYSICS & CHEMISTRY)
  1. When the angle of incidence on a material is 60^(@), the reflected lig...

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  2. In a ircuit shown in figure, the potential difference across the capac...

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  3. Long distance short-wave radio broadcasting uses

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  4. The dimensional formula for inductance is

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  5. If the pressure at half of the lake is equal to 1/3 pressure at the bo...

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  6. To get an output 1 from the circuit shown in the figure, the input mus...

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  7. The capacitance of an air filled parallel plate capacitor is 10 muF. T...

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  8. A light wave is incident normally over a slit of width 24xx10^-5cm. Th...

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  9. In an induction coil, the coefficient of mutual induction is 4 H. If a...

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  10. Water is flowing through a pipe of constant cross-section. At some poi...

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  11. In a biprism experiment, the wavelenght of monochromatic light is 6000...

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  12. A wheel having moment of inertia 2 kg m^(2) about its vertical axis, r...

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  13. Two particles of equal mass (m) each move in a circle of radius (r) un...

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  14. A force of 1200 N acts on a 0.5 kg steel ball as a result of collision...

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  15. A block of mass 2 kg rests on a horizontal surface. If a horizontal fo...

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  16. The photoelectric threshold of a certain metal is 3000A. If the radiat...

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  17. If the change in the value of g at a height h above the surface of the...

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  18. The component of vector A=(a(x)hati+a(y)hatka(z)hatk) along the direct...

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  19. lonization energy of an electron present in the second Bohr's orbit of...

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  20. In a seconds pendulum, mass of bob is 30 gm . If it is replaced by 90 ...

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