Electromagnetic waves with wavelength |
(i) \[{{\lambda }_{1}}\] is used in satellite communication |
(ii) \[{{\lambda }_{2}}\] is used to kill germs in water purifiers |
(iii) \[{{\lambda }_{3}}\] is used to detect leakage of oil in underground pipelines |
(iv)\[{{\lambda }_{4}}\] is used to improve visibility in runways, during fog and mist conditions |
(a) Identify and name the part of electromagnetic spectrum to which these radiations belong |
(b) Arrange the wavelengths in ascending order of their magnitude |
Answer:
(a) Microwave is used in satellite communications So. \[{{\lambda }_{1}}\] is the wavelength of microwave. Ultraviolet rays are used to kill germs in water purifier. So. \[{{\lambda }_{2}}\] is the wavelength of UV rays. X-rays are used to detect leakage of oil in underground pipelines. So, \[{{\lambda }_{3}}\] is the wavelength Infrared is used to improve visibility on runways during fog and mist conditions. So, \[{{\lambda }_{4}}\] is the wavelength of infrared waves. (b) Wavelength of X-rays < Wavelength of UV < Wavelength of infrared < Wavelength of microwave. \[\Rightarrow \] \[{{\lambda }_{3}}<{{\lambda }_{2}}<{{\lambda }_{4}}<{{\lambda }_{1}}\]
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