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Uses of the Bands, and lambda nu = c for GSEB: 9 solved questions

Real GSEB paper questions on uses of the bands, and lambda nu = c, part of electromagnetic waves. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2015 to 2023. No sign-in needed to read them.

What this topic asks

• Wavelength, frequency and photon energy — 5 questions
• Uses and atmospheric effects — 4 questions

All 9 questions with solutions

• Two opposite charged particles oscillate about their mean equilibrium position in free space with a frequency… GSEB Board July 2015; GSEB Board March 2018
• For a radiation of 6×10⁹ Hz passing through air, the wave number per 1 m length is . GSEB Board July 2015
• For a radiation of 6 GHz passing through air, the wave number (number of waves) per 1 m length is (1 GHz=10⁹… GSEB Board March 2019
• To destroy cancer cells are used. GSEB Board March 2020
• For a radiation of 600 MHz passing through air, the wave number per 1 m length is . GSEB Board March 2020 (old course)
• Two opposite charged particles oscillate about their mean equilibrium position in free space, with a frequenc… GSEB Board March 2020 (old course)
• is used for Lasik eye surgery. GSEB Board August 2020
• T.V. waves range from GSEB Board March 2023
• are used to kill germs in water purifiers. GSEB Board July 2023