Q37 of 123 Page 412

Locate the image formed by refraction in the situation shown in figure (18-E11).


37.PNG


Refractive indexes of two mediums are:



C id the center of curvature


Distance of C from the pole =20cm


Therefore, the radius of curvature R=20 cm


Distance of Source S from the pole is 25 cm.


Therefore, object distance u= -25


Image distance =v



⇒


⇒



The location of image is 100 cm from the pole and on the side of Source S.


More from this chapter

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35

Find the angle of deviation suffered by the light ray shown in figure (18-E10). The refractive index μ = 1.5 for the prism material.

35a.PNG


 36

A light ray, going through a prism with the angle of prism 60°, is found to deviate by 30°. What limit on the refractive index can be put from these data?

 38

A spherical surface of radius 30 cm separates two transparent media A and B with refractive indices 1.33 and 1.48 respectively. The medium A is on the convex side of the surface. Where should a point object be placed in medium A so that the paraxial rays become parallel after refraction at the surface?

 39

Figure (18-E12) shows a transparent hemisphere of radius 3.0 cm made of a material of refractive index 2.0.

(a) A narrow beam of parallel rays is incident on the hemisphere as shown in the figure. Are the rays totally reflected at the plane surface?


(b) Find the image formed by the refraction at the first surface.


(c) Find the image formed by the reflection or by the refraction at the plane surface.


(d) Trace qualitatively the final rays as they come out of the hemisphere.