GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 064

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 064

631). Joule is the unit
A). temperature
B). pressure
C). energy
D). electric potential

Answer: energy


   
632). The colour of light is determined by its
A). velocity
B). amplitude
C). wave length
D). phase

Answer: wave length

   
633). Wave theory was proposed by
A). Newton
B). Huygen
C). Raman
D). Young

Answer: Huygen


   
634). Charge of an electron is
A). 1.6×10^-10 coulomb
B). 1.6×10^-27 coulomb
C). -1.6×10^-19 coulomb
D). 6.1×10^-19 coulomb

Answer: -1.6×10^-19 coulomb


   
635). The common emitter configuration is more preferred than the common base configuration because the common emitter configuration gives
A). low current gain, low voltage gain & low power gain
B). low current gain, high voltage gain & low power gain
C). high current gain, high voltage gain & high power gain
D). high current gain, high voltage gain & low power gain

Answer: high current gain, high voltage gain & high power gain



636). Crystals having low melting points are in
A). Van der waal's bond
B). Ionic bond
C). Covalent bond
D). Metallic bond

Answer: Covalent bond

   
637). In an AC circuit containing capacitance only,
A). current lags the emf by p/2
B). current leads the emf by p/2
C). current leads the emf by p
D). current lags the emf by p

Answer: current lags the emf by p/2


   
638). Substances which lose their electrical resistances at very low temperature are called
A). good conductors
B). semiconductors
C). dielectrics
D). super conductors

Answer: super conductors


   
639). Einstein was awarded Nobel Prize for
A). theory of relativity
B). photoelectric effect
C). gravitational effect
D). quantum effect

Answer: photoelectric effect


   
640). Two men talk on moon
A). they hear each other with lower frequency
B). they hear each other With higher frequency
C). they can hear each other as such
D). they cannot hear each other at all

Answer: they cannot hear each other at all