Top 1000+ Solved Physics MCQ Questions Answer
Q. Nichrome wire is used in an electric heater because .
a. It has high resistance
b. It has high melting point
c. It can resist a current upto approx 5 amperes
d. For all of the above reasons
Q. Out of the following pairs, which one does not have identical dimension?
a. Moment of inertia and moment of a force
b. Work and Torque
c. Angular momentum and Planck's constant
d. Impulse and Momentum
Q. A concave lens always forms –
a. a real image
b. a virtual image
c. an Image type which depends on object characteristics
d. an image type which depends on lens curvature
Q. Ondometer is a -
a. Measuring instrument for distance covered by motor wheels
b. Measuring instrument for frequency of electromagnetic waves
c. Device for measuring sound intensity
d. Measuring instrument for electric power
Q. Specific gravity is defined as the ratio of –
a. density of the substance to the density of water
b. density of the substance to the density of water at 0°C
c. density of water at 4°C to the density of the substance
d. density of the substance to the density of water at 4°C
Q. Which one of the following is responsible for the working of New-ton's colour disc experiment?
a. Formation of pure spectra
b. Formation of impure spectra
c. Persistence of vision
d. Principle of complementary colour
Q. What are the two kinds of Rotatory motion?
a. Spin and Vibrational motion
b. Spin and Orbital motion
c. Spin and Translatory motion
d. Spin and Projectile motion
Q. The first law of thermodynamics is simply the case of –
a. Charles law
b. Newton's law of cooling
c. The law of heat exchange
d. The law of conservation of energy
Q. If you look into a mirror and find that the image (your reflexion) is smaller than you, then the type of the mirror is -
a. plano-concave mirror
b. concave mirror
c. plane mirror
d. convex mirror
Q. In an optical fibre the signal is transmitted –
a. in a straight line path
b. In a curved path
c. due to total internal reflection
d. Due to refraction
Q. At boiling point of liquids, its :
a. Temperature increases
b. Atmospheric pressure increases
c. Timperature remains increases
d. Vapour pressure decreases
Q. Transformer is a device to convert –
a. D.C. to A.C.
b. Low voltage D.C. into high voltage D.C.
c. Low voltage A.C. into high voltage A.C.
d. Mechanical energy into Electrical energy
Q. Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen?
a. The heavier mass will reach greater height
b. The lighter mass will reach greater height
c. Both will reach the same height
d. Any of them may reach greater height
Q. Why does ice coverfed in sawdust ct melt quickly?
a. Sawdust does not allow the air to touch the ice
b. The water is absorbed by sawdust
c. Sawdust is a bad conductor of heat
d. Sawdust is good conductor of heat
Q. A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of
a. gravitational force between train and man.
b. illusion of the man
c. the centripetal force
d. pressure difference due to fast moving air in between