PARTB
6 X 1-6
7)
A bi-convex lens converges the parallel rays on the principle axls at 10 cm, then the fou
8)
Which part of the human eye controls the ehtering of the light rays into the eyes is
9) Focal length of the plano-convex lens is
when its radius of curvature of tt
and n is the refractive index of the lens
10) During refraction,
will not change
11) The process of re-emission of absorbed light in all directions with different intensities by the atom
called
12) the refractive index of prism is given byn-
Answers
Answer:
7)where t is the thickness of the lens.
Since the biconvex lens.is split into two equal parts by a plane parallel to its principle axis, the split parts continue to be double convex. Hence thickness of each split part is t. Hence the focal length of each half is f=10cm.
8) iris
9) f=(n-1) /R
10)Wave speed, frequency and wavelength in refraction
Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. ... The wave is slower but the wavelength is shorter meaning frequency remains the same.
11) The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called SCATTERING OF LIGHT.
12) The refractive index of prism μ=sin2Asin[2(A+D)]