Answer the following the questions: (a) Name the em waves which are produced during radioactive decay of a nucleus. Write their frequency range. (b) Welders wear special glass goggles while working. Why? Explain. (c) Why are infrared waves often called as heat waves? Given their one application.
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(a) Gamma rays are produced during the radioactive decay of a nucleus. Frequency range is 3×1019 to 5×1024 Hz.
(b) Welders wear special glass goggles while working so that they can protect their eyes from harmful electromagnetic radiation.
(c) Infrared waves are often called as heat waves because they induce resonance in molecules and increase internal energy in a substance.
Infrared waves are used in burglar alarms, security lights and remote controls for television and DVD players.
(b) Welders wear special glass goggles while working so that they can protect their eyes from harmful electromagnetic radiation.
(c) Infrared waves are often called as heat waves because they induce resonance in molecules and increase internal energy in a substance.
Infrared waves are used in burglar alarms, security lights and remote controls for television and DVD players.
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(a) The electromagnetic waves which are produced during radioactive decay of a nucleus are gamma rays. Gamma rays have a frequency range of 3 × 10¹⁹ Hz to 5 × 10²⁴ Hz.
(b) Welders wear special glass goggles while working to protect their eyes from the harmful UV radiation which can also cause skin cancer and eyes problem.
(c) Infrared waves are often called as heat waves because wavelength of infrared waves can set atoms and molecules of an object in vibrational motion which in turns produces heat due to vibration of its atoms. This is the reason why infrared waves are called as heat waves.
Infrared waves are used in the security lights, alarm system etc.
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