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PUNJAB BOARD PREVIOUS YEAR PAPERS-Electromagnetic Waves-EXERCISE
- Write two applications of Infra-red waves.
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- What are electromagnetic waves ? Explain with the help of diagram.
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- Give two properties and two uses of X-rays.
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- State any four properties of electromagnetic waves.
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- Write two uses of X-Rays.
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- Write two uses of infra red rays.
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- Write four uses of ultraviolet rays.
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- State essential properties of e.m. waves.
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- Write four properties of X-rays.
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- What is displacement current?
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- Give two characteristics of electromagnetic waves.
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- Write four uses of ultraviolet rays.
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- The small ozone layer on top of the stratosphere is crucial for human ...
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- Microwaves are used in RADAR, why ?
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- Give two characteristics of electromagnetic waves.
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- What are X-rays ? Give their two uses.
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- What are infra-red rays ? Give their two uses.
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- What are ultraviolet rays ? Give their two uses.
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- Write two uses of infra red rays.
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- Write two uses of Radiowaves.
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