Solapur University M.Sc Nano Technology (Semester-II) Paper on Properties of Nanomaterials March 2019
| Sr. No. | Question |
| 1 | Optical fiber operates on the principle of ________
(a) Total internal reflectance (b) Tyndall effect (c) Photo-electric effect (d) Laser technology |
| 2 | Sky looks blue because the sun light is subjected to ________
(a) Rayleigh scattering (b) Compton scattering (c) Both (d) None of these |
| 3 | Bouguer’s law relates ________
(a) Light relfection (b) Light refraction (c) Light transmission (d) Light Absorption |
| 4 | As the surface area changes the ______-the nanomaterials changes.
(a) Super conductors (b) Alkali metals (c) Transition metals (d) Ferrites |
| 5 | Example of magnetic material used in data storage devices ______
(a) 45 permalloy (b) CrO2 (c) Cunife (d) Alnico |
| 6 | Typical size of magnetic domains ________(mm)
(a) 1 – 10 (b) 0.1 – 1 (c) 0.0t (d) 0.001 |
| 7 | Metals are ______
(a) Transparent (b) Opaque (c) Translucent (d) None of these |
| 8 | Visible light’s wavelength range ________
(a) 0.39 – 0.77 mm (b) 0.39 – 0.77 pm (c) 0.39 – 0.77 nm (d) 0.39 – 0.77 cm |
| 9 | Refractive index of materials of approximately equal to square root of _________
(a) Electrical permittivity (b) Magnetic permeability (c) Electrical permittivity with magnetic permeability (d) None of these |
| 10 | Magnetic field strength’s units are _______
(a) Wb per sq. meter (b) Web/A.m (c) A/m (d) Tesla/m |
| 11 | Basic source of magnetism
(a) Charged particles alone (b) Movement of charged particles (c) Magnetic dipoles (d) Magnetic domains |
| 12 | Electro- luminescence occurs in ________
(a) Electrical conductors (b) Electrical insulators (c) P-n junctions (d) All |
| 13 | Particle size is a notion introduced for comparing _______of solid particles.
(a) Dimension (b) Intramolecular bonds (c) Volume (d) Size |
| Published on 24th Sept 2021 | |
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