Top 1000+ Solved Physics MCQ Questions Answer
Q. A cyclone is an engineering device that is used to -
a. transport materials
b. segregate particles
c. control switching devices
d. model fractals
Q. Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice- creams and jellies?
a. Agar
b. Chlorella
c. Spirullina
d. Gymnosperms
Q. In an electric motor, the energy transformation is from .
a. electrical to chemical
b. chemical to light
c. mechanical to electrical
d. electrical to mechanical
Q. A radioactive substance does not undergo any change (in mass or charge) during –
a. ganuna-emission
b. oxidation
c. alpha-emission
d. beta-emission
Q. On a rainy day, small oil films on water show brilliant colors. This is due to -
a. dispersion
b. interference
c. diffraction
d. polarization
Q. The waveform of a certain signal can be studied by –
a. Spectrometer
b. Cathode ray oscilloscope
c. p - n junction diode
d. Sonometer
Q. Ultrasonic waves are produced by making use of -
a. ferro magnetic material
b. ferri magnetic material
c. piezo electric material
d. pyro electrical material
Q. Amount of water vapour (gaseous) in a given volume of air (cubic metre) is known as:
a. Mixing ratio
b. Relative humidity
c. Absolute humidity
d. Specific humidity
Q. Which of the following is a conductor of electricity?
a. Rubber
b. Pure water
c. Salt water
d. Benzene
Q. The opening and closing of the stomatal pores is a function of the -
a. Guard cells
b. Chloroplast
c. Xylem
d. Phloem
Q. Which one among the following substances evolved heat when dissolved in water?
a. Glucose
b. Fructose
c. Quick lime
d. Salt peter
Q. In the remote control of television, electromagnetic waves used are –
a. ultraviolet
b. microwave
c. radiowave
d. infrared
Q. Sound and light waves both .
a. have similar wavelength
b. obey the laws of reflection
c. travel as longitudinal waves
d. travel through vacuum