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A cathode ray oscilloscope (CRO) is a device which converts electrical signals into an active graphical representation n a fluorescent screen. The x axis is always time axis, where the 1 cm is equal to a preset time scale called time base. A sound wave is displayed on the screen of a cathode ray oscilloscope. The time base of the CRO is set at 2.5 ms/cm.
What is the frequency of the sound wave ?
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Correct option is B. 100 Hz
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Q1
A cathode ray oscilloscope(CRO) is a device which converts electrical signals into an active graphical representation on a fluorescent screen. The x axis is always time axis, where the 1cm is equal to a preset time scale called time base. A sound wave is displayed on the screen of a cathode ray oscilloscope. The time base of the CRO is set at 2.5ms/cm. What is the frequency of the sound wave?
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