Class VIII

Values for digital signals are
  1. 1 and 2
  2. 3 and 4
  3. 5 and 6
  4. 0 and 1
A circuit which implements AND operation is
  1. AND gate
  2. OR gate
  3. NOT gate
  4. NOR gate
A cathode ray oscilloscope consists of
  1. The electron gun
  2. The deflecting plates
  3. A fluorescent screen
  4. all of above
Degree of deflection of electrons is directly proportional to
  1. current
  2. voltage
  3. strength of electric field
  4. resistance
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