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

Questions

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]

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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]