Question 1.
The distance between node and adjacent antinode is 30 cm. The wavelength is
A. 30 cm.
B. 90 cm.
C. 120 cm.
D. 60 cm.
Ans: D. 60 cm.
Question 2.
For which one of the following, ”Diodes” are generally used for?
A. Rectification
B. Amplification
C. Modulation
D. Filtration
Ans: A. Rectification
Question 3.
Where is a transistor most likely to be found ?
A. Wrist watch
B. Fuse
C. Hearing aid
D. Fluorescent lamp
Ans: C. Hearing aid
Question 4.
In a Laser (say neon laser) all the atoms emit the light waves of
A. Same frequency
B. Same amplitude
C. Same phase
D. All of the above
Ans: D. All of the above
Question 5.
The material used in the fabrication of a transistor is
A. Aluminium
B. Copper
C. Silicon
D. Silver
above
Question 6.
The width of depletion layer of a P-N junction
A. Decreases with light doping
B. Increases with heavy doping
C. Is independent of applied voltage
D. Is increased under reverse bias
Ans: D. Is increased under reverse bias
Question 7.
Solids which conduct electricity at higher temperature but not at lower temperature are called
A. Super-conductor
B. Metallic-conductor
C. Semi-conductor
D. Insulator
Ans: C. Semi-conductor
Question 8.
The Laser is a beam of radiations which are
A. Non-coherent and monochromatic
B. Coherent and monochromatic
C. Non-coherent and non-monochromatic
D. Coherent and non-monochromatic
Ans: B. Coherent and monochromatic
Question 9.
For which Diode is used ?
A. Modulation
B. Oscillation
C. Amplification
D. Purification
Ans: D. Purification
Question 10.
The impurity atoms with which silicon should be doped to make p-type semiconductors are
A. Phosphorus
B. Antimony
C. Boron
D. Germanium
Ans: C. Boron
Question 11.
Which one among the following components can not be developed within an ”integrated circuit”?
A. Diode
B. Triode
C. Transformer
D. Transistor
Ans: C. Transformer
Question 12.
In quantum mechanics a particle is represented by a
A. Wave
B. Wave packet
C. Particle
D. None of the above
Ans: B. Wave packet
Question 13.
The complete form of ‘IC’ in electronics is
A. Internal circuit
B. Independent circuit
C. Integrated circuit
D. Inbuilt circuit
Ans: C. Integrated circuit
Question 14.
Which of the following is used for regulated electric supply ?
A. Zener diode
B. Junction diode
C. Gun diode
D. Tunnel diode
Ans: A. Zener diode
Question 15.
A metal semiconductor junction diode is called __
A. Schottky diode
B. Photo diode
C. Tunnel diode
D. P-N Junction diode
Ans: A. Schottky diode
Question 16.
The p wave of a normal Electrocardiogram indicates
A. Atrial depolarization
B. Ventricular repolarization
C. Atrial repolarization
D. Ventricular depolarization
Ans: A. Atrial depolarization
Question 17.
In electronics what comes under tank circuit ?
A. Resistance and capacity
B. Resistance and inductance
C. Capacity and inductance
D. Resistance, capacity and inductance
Ans: C. Capacity and inductance
Question 18.
A NOT gate can be implemented by:
A. A single diode
B. Two diodes
C. A single resistor
D. A single transistor
Ans: D. A single transistor
Question 19.
Universal gates are
A. AND and OR
B. OR and NOT
C. NAND and NOR
D. AND and XOR
Ans: C. NAND and NOR
Question 20.
Which of the following phenomenon helps to conclude that light is a transverse wave?
A. Interference
B. Diffraction
C. Polarisation
D. Refraction
Ans: C. Polarisation
Physics GK MCQs all set
- Physics MCQs Set-1
- Physics MCQs Set-2
- Physics MCQs Set-3
- Physics MCQs Set-4
- Physics MCQs Set-5
- Physics MCQs Set-6
- Physics MCQs Set-7
- Physics MCQs Set-8
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- Physics MCQs Set-11
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- Physics MCQs Set-14
- Physics MCQs Set-15
- Physics MCQs Set-16
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- Physics MCQs Set-24
- Physics MCQs Set-25
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- Physics MCQs Set-27
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- Physics MCQs Set-31
- Physics MCQs Set-32
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- Physics MCQs Set-64
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- Physics MCQs Set-69
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- Physics MCQs Set-72
- Physics MCQs Set-73
- Physics MCQs Set-74
- Physics MCQs Set-75
- Physics MCQs Set-76
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