Measurements and Instrumentation - Engineering

Q1:

The time base of a high frequency CRO whose screen diameter is 10 cm is set at 10 μ sec/cm. The lowest frequency which can be fully displayed on the screen is

A more than 100 kHz

B equal to 100 kHz

C equal to 10 kHz

D less than 10 kHz

ANS:C - equal to 10 kHz

F = 1/t.

And convert cm into m.