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Applied Physics Practice Test 57

# Operational Amplifier (OA) Quiz Questions and Answers PDF - 57

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## Operational Amplifier (OA) Quiz Answers : Test 57

MCQ 281: In op-amp, the signal applied at inverting terminal appears at the output terminal with a phase

A) 0
B) 90
C) 180
D) 45

MCQ 282: Change in potential energy of a body moving from height 10 m to 5 m having mass 3 kg will be

A) 294
B) 295
C) 145
D) 147

MCQ 283: In e/m experiment, we assume nature of electron as

A) wave
B) particle
C) photon
D) both a and b

MCQ 284: Methanol, at 30 °C, has viscosity of

A) 0.021
B) 0.365
C) 0.51
D) 3.564

MCQ 285: An EMF of 5.6 V is induced in a coil while current in coil is decreased from 100 A to 20 A in 0.02 s, its mutual induction will be

A) 1.4 × 10-3
B) 2.4 × 10-3
C) 3.4 × 10-3
D) 4.4 × 10-3

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