General Awareness on Science - Physics MCQs with Answers for Competitive Exams

31 Which instrument is used to measure blood pressure ?
A sphygmomanometer
B thermometer
C hygrometer
D barometer

Answer: Option [A]
32 Which device is used to convert solar energy into electricity ?
A Danial cell
B Solar cell or photovoltatic cell
C Electrochemical cell
D Vectorscope

Answer: Option [B]
33 According to special theory of relativity the mass of a particle :
A remains constant with increase in velocity
B increase with increase in velocity with respect to an observer
C decreases with increase in velocity
D decreases with decrease in velocity

Answer: Option [B]
34 The field produced around a current carrying conductor is :
A electric field
B electro-magnetic field
C magnetic field
D electrostatic field

Answer: Option [C]
35 Cause of rainbow formation is :
A refraction, reflection and dispersion
B refraction and dispersion
C refraction and scattering
D diffraction and reflection

Answer: Option [A]


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