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प्रश्न
A type of electromagnetic wave has a wavelength of 50 Å. Name the wave and state one use of this type of wave.
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उत्तर
X-rays. These are used for determining fracture of bones, hidden objects in customs at Airports.
संबंधित प्रश्न
Name the characteristic of sound in relation to its waveform.
Define frequency term in relation to a wave.
What is a stethoscope ? Name the principle on which a stethoscope works.
Draw a labelled diagram to show the multiple reflections of sound in a part of the stethoscope tube.
Write the approximate value of the speed of sound in air.
How are bats able to fly in the dark?
State two factors on which the natural frequency of a body depends.
When a sound is made from a distance of 18 m, in front of a tall building, it is found to get repeated again. Which phenomenon is associated with this observation? Give a brief explanation of this phenomenon?
Explain reflection at the boundary of a rarer medium.
Write short notes on reflection of sound waves from plane and curved surfaces.
