In mri scanning the excited hydrogen emits which signal
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Hydrogen protons within the patient's body will then align to the magnetic field which is typically 30 to 60 thousand times stronger than the magnetic field of the earth. A radio frequency (RF) pulse is then emitted from the scanner, tuned to a specific range of frequencies at which hydrogen protons precess.
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If the angles of elevation of the top of the candle from two coins distant ‘a’
cm and ‘b’ cm (a>b) from its base and in the same straight line from it are
30˚ and 60˚, then find the height of the candle.
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