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
Answer: (c) doubled
Q137. OR gate performs
(a) logical addition
(b) logical multiplication
(c) inversion function
(d) logical division
Answer: (a) logical addition
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
Answer: (a) XOR 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
Answer: (c) 10
Q140. An SCR behaves as a ________ switch
(a) bidirectional
(b) unidirectional
(c) mechanical
(d) non-polar
Answer: (b) unidirectional
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
Answer: (d) a transducer
Q142. _____ is a source of microwave
(a) Klystron Oscillator
(b) Nernst Glowbar
(c) Mercury lamp
(d) Sodium lamp
Answer: (a) Klystron Oscillator
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
Answer: (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
Answer: (a) Radio 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
Answer: (b) Spin dependent and have a noncentral 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
Answer: (c) Boyle's law
Q147. Who discovered the concept of blackbody radiation
(a) Albert Einstein
(b) Max Planck
(c) Niels Bohr
(d) Werner Heisenberg
Answer: (b) Max Planck