Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Light travels in a straight line. This statement does hold if the medium of travel for light is _________.
of variable refractive index
made up of slabs of different refractive indices
homogeneous and transparent
inhomogeneous and transparent
Liquids and gases never show
diamagnetic property
paramagnetic property
ferromagnetic property
electromagnetic property
The energy of a photon, whose momentum is 10 MeV/c, where c is the speed of light, is given by
10 MeV
100 MeV
1 MeV
0.1 MeV
In total internal reflection, the light travels from
rarer to denser medium and it occurs with no loss of intensity
denser to rarer medium and it occurs with no loss of intensity
rarer to denser medium and it occurs with loss of intensity
denser to rarer medium and it occurs with loss of intensity
Which one of the following statements is not correct?
The response of the ear to sound of increasing intensity is approximately logarithmic
B The sensitivity of the human ear does not vary with the frequency of the sound
When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.
Longitudinal waves can travel in all media-solids, liquids and gases
