7.4. Electromagnetic spectrum
A subsection of Physics, 9702, through 7. Waves
Listing 10 of 55 questions
By reference to the direction of propagation of energy, state what is meant by a transverse wave. A space telescope is designed to detect electromagnetic radiation with wavelengths in the range 12 μm to 28 μm. State the region of the electromagnetic spectrum for this radiation. A detector on another space telescope detects an electromagnetic wave. The signal from the detector is transmitted to Earth and displayed on an oscilloscope as shown in . The frequency of the signal displayed on the oscilloscope is equal to the frequency of the detected electromagnetic wave. 1.0 cm 1.0 cm The time-base setting on the oscilloscope is 5.0 × 10–15 s cm–1. Calculate the wavelength of the detected electromagnetic wave. wavelength = m
9702_m24_qp_22
THEORY
2024
Paper 2, Variant 2
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