50 db to 70 db (decibel)
60 db to 80 db (decibel)
65 db to 75 db (decibel)
70 db to 85 db (decibel)
The Ozone Layer restricts from
The part of the eye having the larges refractive index is:
The particle required to continue the chain process of Uranium fission is:
The period of pendulum depends upon
The period of revolution of a geostationary satellite is
The phenomenon of change in direction of light when it passes from one medium to another is called
The phenomenon of light related with the appear-ance of blue colour of the sky is
The phenomenon of total internal reflection may occur when light is passing from
The photo-oxidation process is initiated by
The pitch of sound depends on its