Top 1000+ Solved Physics MCQ Questions Answer
Q. The sky appears blue because of –
a. Atmospheric water vapour
b. Scattering of light
c. Reflection on sea water
d. Emission of blue wavelength by the sun
Q. What happens to a liquid, when the vapour pressure equals the atmospheric pressure?
a. The liquid cools
b. The liquid boils
c. No change
d. The liquid evaporates
Q. Why do brads not have respiratory trouble at the time of flying at high all?
a. Their lungs are very large
b. They fly inactively
c. They have extra air sacs
d. They use less
Q. The temperature which has the same reading on both Fahrenheit and Celsius scales is –
a. 40°
b. -40°
c. -34°
d. -140'
Q. Tear gas used by the police to disperse the mob contains –
a. carbon dioxide
b. chlorine
c. ammonia
d. hydrogen sulphide
Q. Mist is caused by –
a. dry ice
b. ice at low temperature
c. water vapour at low temperature
d. carbon-monoxide in solid form
Q. The ozone layer in the atmosphere is at a height of about .
a. 25 km
b. 50 km
c. 100 km
d. 200 km
Q. The part of the eye having the larges refractive index is :
a. cornea
b. aqueous humor
c. lens
d. vitreous humor
Q. Conversion of heat into electrical er is achieved by using –
a. Ammeter
b. Hydrometer
c. Voltmeter
d. Thermocouple
Q. Necessary element of change in solar energy to electric energy –
a. Berilliurn
b. Silicon
c. Tantelum
d. Pure Copper
Q. Electric current in a metal wire is due to the flow of —
a. Electrons
b. Protons
c. Ions
d. Holes