1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
A student measures the focal length of a convex lens by putting an object pin at a distance $$'u'$$ from the lens and measuring the distance $$'v'$$ of the image pin. The graph between $$'u'$$ and $$'v'$$ plotted by the student should look like
A
B
C
D
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Two lenses of power $$-15$$ $$D$$ and $$+5$$ $$D$$ are in contact with each other. The focal length of the combination is
A
$$+ 10\,cm$$
B
$$- 20\,cm$$
C
$$- 10\,cm$$
D
$$+ 20\,cm$$
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The refractive index of a glass is $$1.520$$ for red light and $$1.525$$ for blue light. Let $${D_1}$$ and $${D_2}$$ be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then,
A
$${D_1} < {D_2}$$
B
$${D_1} = {D_2}$$
C
$${D_1}$$ can be less than or greater than $${D_2}$$ depending upon the angle of prism
D
$${D_1} > {D_2}$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is $${4 \over 3}$$ and the fish is $$12$$ $$cm$$ below the surface, the radius of this circle in $$cm$$ is
A
$${{36} \over {\sqrt 7 }}$$
B
$${36\sqrt 7 }$$
C
$${4\sqrt 5 }$$
D
$${36\sqrt 5 }$$
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