- AFrequency
- BVelocity
- ✓Phase
- DAmplitude
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Television signals on earth cannot be received at distances greater than 100 km from the transmission station. The reason behind this is that
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(a) The receiver antenna is unable to detect the signal at a distance greater than 100 km |
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(b) The TV programme consists of both audio and video signals |
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(c) The TV signals are less powerful than radio signals |
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(d) The surface of earth is curved like a sphere |
Which one of the following statements about uranium is correct
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(a) |
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(b) Fast neutrons trigger the fission process in |
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(c) |
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(d) |