Physics GK Quiz

Q136. In uniform bending, if the breadth of the beam is halved, then the depression of the beam is
(a) halved
(b) unchanged
(c) doubled
(d) quadrupled

Q137. OR gate performs
(a) logical addition
(b) logical multiplication
(c) inversion function
(d) logical division

Q138. Which of the following forms as a part of the binary addition/subtraction circuits
(a) XOR gate
(b) OR gate
(c) AND gate
(d) NAND gate

Q139. How many flip flops are required to build a binary counter that counts from 0 to 1023
(a) 5
(b) 8
(c) 10
(d) 12

Q140. An SCR behaves as a ________ switch
(a) bidirectional
(b) unidirectional
(c) mechanical
(d) non-polar

Q141. The device which senses the bio-signal and converts it into an electrical signal for bio signal processing is called
(a) an electrode
(b) an artifact
(c) a sensor
(d) a transducer

Q142. _____ is a source of microwave
(a) Klystron Oscillator
(b) Nernst Glowbar
(c) Mercury lamp
(d) Sodium lamp

Q143. Direct confirmation about the quantization of internal energy states of an atom was first obtained from
(a) Stern-Gerlach experiments
(b) Compton scattering experiment
(c) Millicon oil drop experiment
(d) Frank-Hertz experiment

Q144. Nuclear Magnetic Resonance (NMR) spectrometer normally operates at
(a) Radio frequency region
(b) Microwave frequency region
(c) Audio frequency region
(d) Ultraviolet frequency region

Q145. Nuclear forces are
(a) Spin dependent and have no non-central part
(b) Spin dependent and have a noncentral part
(c) Spin independent and have no non-central part
(d) Spin independent and have a non-central part

Q146. Volume of gas is inversely proportional to pressure at constant mass of temperature, this is called as
(a) Henry’s law
(b) Dalton’s law
(c) Boyle's law
(d) Charle’s law

Q147. Who discovered the concept of blackbody radiation
(a) Albert Einstein
(b) Max Planck
(c) Niels Bohr
(d) Werner Heisenberg

Q148. Light Emitting Diode (LED) work on principle of
(a) Laser
(b) Thermionic emission
(c) Photoelectric code
(d) Electroluminescence

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