solve (c) only In the northern hemisphere the average horizontal component of Ea
ID: 1775819 • Letter: S
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solve (c) only
In the northern hemisphere the average horizontal component of Earth's magnetic field in 1972 , and the average inclination was 73°. What was the corresponding magnitude of Earth's magnetic field? (b) A beam of monochromatic light reflects and refracts at point A on the interface between material 1 with index of refractionn, 1.33 and material 2 with index of refraction n, - 1.77. The incident beam makes an angle of so wm the interface. What are the angle of reflection and angle of refraction at oint A? Draw Ray diagram showing two media with angle of incidence and angle of reflection. (8) Calculate the wavelengths of AM radio wave when the frequency is f 1500 kHz and frequency of X ray when the wavelength is 0.1 nm. The speed of light in vacuum is 3.0 x (useful formula: m/s :Explanation / Answer
Wavelength of Am radio wave= velocity of light/ frequency
=3*10^8)/(1500*10^3)
=200 m
Calculate the frequency of X rays.
Frequency =velocity of light/wavelength
={3*10^8}/{0.1*10^(-9)}
=3*10^(18) Hz.
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