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Free gk questions Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. Which of the following is most suitable for the core of an electromagnet?
(a)
air
(b)
steel
(c)
soft iron
(d)
none of these
2. Sound waves do not exhibit the phenomenon of
(a)
diffraction
(b)
interference
(c)
polarisation
(d)
refraction
3. When a charged particle enters a uniform magnetic field its kinectic energy?
(a)
becomes zero
(b)
decreases
(c)
increases
(d)
remains constant
4. Atomic power plant works on the principle of
(a)
combined effect of all the three
(b)
thermal combustion
(c)
fusion
(d)
fission
5. The heat transferred by the radiator of a refrigerator is
(a)
the same as that at the freezer
(b)
less than that at the freezer
(c)
more than that at the freezer
(d)
none of the above
6. The temperature of water at the bottom of a waterfall is higher than that at the top because
(a)
falling water absorbs heat from the surroundings
(b)
kinetic energy of falling water is converted into heat
(c)
the surface at the boiling provides heat
(d)
water at the bottom has greater potential energy
7. Longitudinal waves do not exhibit
(a)
polarization
(b)
diffraction
(c)
reflection
(d)
refraction
8. No force is exerted by magnetic field on a stationary
(a)
current loop
(b)
magnetic dipole
(c)
electric dipole
(d)
none of these
9. No force is exerted by magnetic field on a stationary
(a)
current loop
(b)
magnetic dipole
(c)
electric dipole
(d)
none of these
10. In photoelectric effect, the number of photo electrons emitted is proportional to
(a)
work function of photo cathode
(b)
velocity of incident beam
(c)
frequency of incident beam
(d)
intensity of incident beam
