A. protons
B. positrons
C. electrons
D. photons
Related Mcqs:
- When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?
A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s - Electromagnetic waves emitted from antenna are________________?
A. Stationary
B. Longitudinal
C. Transverse
D. All the above - X-ray are________________?
A. of unknown nature
B. high energy electrons
C. high energy photons
D. radio isotopes - Identify the correct statement about minority carriers_____________?
A. holes in n-type and free electrons in p-type
B. holes in n-type and p-type
C. free electrons in n-type and holes in p-type
D. free electrons in n-type and p-type - The especially designed semiconductor diodes used as indicator lamps in electronic circuits are___________?
A. The switch
B. The light emitting diode
C. The photo diodes
D. Solar cells. - The value of resistivity for insulator is of the order of____________?
A. 105 ohm metre
B. 106 ohm metre
C. 107 ohm metre
D. 108 ohm metre - The operational amplifier is______________?
A. A high gain amplifier
B. A high-power amplifier
C. A high resistance amplifier
D. A low resistance amplifier - To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?
A. 2
B. 3
C. 4
D. 5 - The operation of a transistor requires______________?
A. That the emitter be heated
B. That the base be heated
C. That the collector be heated
D. None of the above - In forward bias the width of potential barrier_____________?
A. Increases
B. Decreases
C. Remains same
D. No effect
