The student draws an arrow on the paper to mark the incident ray. She marks the path of the emergent ray with crosses A, B and C.
‘She removes the block from the paper and places a protractor over the outline of the
block, as shown in Figure 2
Figure 2
protractor .
SE re
fi ©
i. . ey x incident ray
; +
,- *® Cla ai 7y
' VLA 1
‘ Las te] |
. CAs I ‘t CF j
at %7
SS PE SS oy
ae tae
outine of transparent
semicircular block
“Bs
x
c
Determine. using Figure 2. the refractive index of the block.
[4 marks)