Top 1000+ Solved Physics MCQ Questions Answer
Q. Supersonic plane fly with the speed -
a. less than the speed of sound
b. of sound
c. greater than the speed of sound
d. of light
Q. When a particle and an antiparticle come in contact with each other, they
a. repell each other
b. annihilate each other
c. go undisturbed
d. spin about a common axis
Q. Time of exposure required for taking photograph of an object depends upon the –
a. brightness of the object
b. skill of photographer
c. proximity of object
d. size of the object
Q. The ordinary and maximum tolerance limit of sound by human being is –
a. 50 db to 70 db (decibel)
b. 60 db to 80 db (decibel)
c. 65 db to 75 db (decibel)
d. 70 db to 85 db (decibel)
Q. Which is best used as a sound absorbing material in partition walls?
a. Stone chips
b. Steel
c. Glass - wool
d. Glass pieces
Q. The best conductor of electricity among the following is -
a. copper
b. iron
c. aluminum
d. silver
Q. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit
a. X-rays
b. ultraviolet light
c. (4) All of the above
d. radio waves
Q. The primary colours in photography are –
a. Red, Blue, Yellow
b. Red, Yellow, Green
c. Red, Blue, Green
d. Blue, Yellow, Green
Q. Two electrons in an orbital are differentiated by which of the following?
a. Magnetic quantum number
b. Spin quantum number
c. Principal quantum number
d. Azimuthal quantum number
Q. Which of the following property of sound is affected by change in air temperature –
a. Frequency
b. Intensity
c. Amplitude
d. Wavelength
Q. Vehicles use to see the objects coming from behind.
a. Concave lens
b. Convex lens
c. Convex mirror
d. Concave mirror
Q. If electrical conductivity increases with the increase of temperature of a substance, then it is a:
a. Conductor
b. Semiconductor
c. Insulator
d. Carborator
Q. Transition ions absorb light in –
a. infrared region
b. ultraviolet region
c. microwave region
d. visible region