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Free tnpsc model questions Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. Electrons accelerated in a particle accelerator with a very high velocity
(a)
acquires no mass variation
(b)
acquires infinite mass
(c)
acquires increased mass
(d)
acquires decreased mass
2. The wavelength of the matter wave is independent of
(a)
momentum
(b)
charge
(c)
velocity
(d)
mass
3. Photoelectric effect indicates that light has the aspects of a particle
(a)
electron
(b)
neutron
(c)
proton
(d)
photon
4. Maximum kinetic energy of photo electrons is independent of its
(a)
intensity
(b)
velocity
(c)
wavelength
(d)
frequency
5. _____ is the basis for the electron microscope?
(a)
Particle nature of photon
(b)
Particle nature of proton
(c)
Wave nature of photon
(d)
Wave nature of electron
6. Work done in bringing the fastest electron to rest is equal to _____ energy of the fastest electron.
(a)
vibrational
(b)
rotational
(c)
potential
(d)
kinetic
7. Identify the particle that has no rest mass.
(a)
Electron
(b)
Photon
(c)
Proton
(d)
Positron
8. Einstein's mass energy relation is
(a)
E = mc
(b)
E = m/c
2
(c)
E = c
2
/m
(d)
E = mc
2
9. _____ microscope is used to study bacteria, virus and structure of crystals.
(a)
X-ray
(b)
Simple
(c)
Optical
(d)
Electron
10. ____ is used in burglar alarm and fire alarm.
(a)
Photoelectric cell
(b)
Lechlanche cell
(c)
Dry cell
(d)
Solar cell
