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Free tnpsc model questions Online Test - MeritNotes
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No. of Questions :10
Remaining Time :
1. _____ are used as a diagnostic tool in medicine.
(a)
UV rays
(b)
X rays
(c)
Gamma rays
(d)
Radiowaves
2. Solar spectrum is an example of _____ spectrum.
(a)
emission
(b)
band absorption
(c)
line absorption
(d)
continuous absorption
3. Line spectrum is emitted by
(a)
carbon arc
(b)
atoms in gaseous state
(c)
calcium salt in bunsen burner
(d)
incandescent solids
4. The existence of electromagnetic waves was confirmed experimentally by
(a)
Maxwell
(b)
Planck
(c)
Huygens
(d)
Hertz
5. Electromagnetic waves are
(a)
longitudinal
(b)
transverse
(c)
both a and b
(d)
neither b nor a
6. _____ was the first to deal with scattering of light by air molecules.
(a)
Planck
(b)
Lord Rayleigh
(c)
Raman
(d)
Tyndal
7. The physical properties of electromagnetic waves are determined by their
(a)
frequency
(b)
velocity
(c)
method of excitation
(d)
wavelength
8. Double refraction is produced by
(a)
Bartholinus
(b)
Malus
(c)
Fresnel
(d)
Huygens
9. Which phenomenon is used in the construction of polaroids?
(a)
Selective absorption
(b)
Fluorescence
(c)
Phosphorescence
(d)
All the above
10. According to Huygens, light posses _____ energy.
(a)
magnetic
(b)
mechanical
(c)
electromagnetic
(d)
electrical
