Related Questions

"An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:
A Fresnel reflection
B Fresnel refraction
C Snell's law
D None of these
A media query consists of a media type and zero or more expressions that check for the conditions of particular media features. State true or false.
A True
B False
The Young Bengal group published the __________(Quest for Knowledge) for propagating their views
A Jnananvesan
B Parthenon
C Hesperus
D Enquirer
'AI Hilal' was a newspaper launched for propagating nationalism by
A Syed Ahmed Khan
B Mahatma Gandhi
C Abul Kalam Azad
D DE Wacha
Isotropic materials have the same __________ in all directions.
A Induced stresses
B Density
C Elastic properties
D Thermal properties
The power gain of a half-wave dipole with respect to an isotropic radiator is
A 2.15 db
B 3 db
C 4.15 db
D 6 db
Isotropic materials are those which have the same
A Elastic properties in all directions
B Stresses induced in all directions
C Thermal properties in all directions
D Electric and magnetic properties in all directions
In a simple bending theory, one of the assumptions is that the material of the beam is isotropic. This assumption means that the
A Normal stress remains constant in all directions
B Normal stress varies linearly in the material
C Elastic constants are same in all the directions
D Elastic constants varies linearly in the material
Isotropic materials have the same __________ in all the directions.
A Thermal properties
B Elastic properties
C Stresses
D All of the above
Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)?
A E = 2G (1 + v)
B E = G (1 + v)
C $${\text{E}} = \frac{{{\text{G}}\left( {1 + {\text{v}}} \right)}}{2}$$
D E = 2G (1 + 2v)

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