T.V. transmission cannot cover a very large area because

Options:

  • A. the strength of T.V. waves is very limited
  • B. picture cannot be transmitted clearly after a specific distance
  • C. the shape of the earth is spherical
  • D. the air is not a good conductor of light and sound/waves
View Answer

C. the shape of the earth is spherical

Which from the following is true for

Options:

  • A. Sound cannot travel through a vacuum
  • B. Sound cannot travel through gases
  • C. Sound cannot travel through liquids
  • D. Sound cannot travel through solids
View Answer

A. Sound cannot travel through a vacuum