IIT-JEE 2006 | Geometrical Optics Question 66 | Physics

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IIT-JEE 2006

MCQ (Single Correct Answer)

-1

A biconvex lens of focal length $f$ forms a circular image of sun of radius $r$ in focal plane. Then

$\pi r^2 \propto f$.

$\pi r^2 \propto f^2$.

if the lower half part is covered by black sheet, then the area of the image is equal to $\frac{\pi r^2}{2}$.

if f is doubled intensity will increase.

IIT-JEE 2006

MCQ (Single Correct Answer)

-1

Graph of position of image versus position of point object from a convex lens is shown. Then, the focal length of the lens is

IIT-JEE 2006 Physics - Geometrical Optics Question 6 English

$0.50 \pm 0.05 \mathrm{~cm}$

$0.50 \pm 0.10 \mathrm{~cm}$

$5.00 \pm 0.05 \mathrm{~cm}$

$5.00 \pm 0.10 \mathrm{~cm}$

IIT-JEE 2006

MCQ (Single Correct Answer)

-0

A simple telescope used to view distant objects has eyepiece and objective lens of focal lengths $f_e$ and $f_0$, respectively. Match Column I with Column II:

Column I		Column II
(A)	Intensity of light received by lens.	(P)	Radius of aperture(R).
(B)	Angular magnification.	(Q)	Dispersion of lens.
(C)	Length of telescope.	(R)	Focal length $f_0, f_e$.
(D)	Sharpness of image.	(S)	Spherical aberration.

$$ [\mathrm{A} \rightarrow(\mathrm{P}) ; \mathrm{B} \rightarrow(\mathrm{R}) ; \mathrm{C} \rightarrow(\mathrm{R}) ; \mathrm{D} \rightarrow(\mathrm{P}, \mathrm{Q})]$$

$$ [\mathrm{A} \rightarrow(\mathrm{P}) ; \mathrm{B} \rightarrow(\mathrm{R}) ; \mathrm{C} \rightarrow(\mathrm{R}) ; \mathrm{D} \rightarrow(\mathrm{P}, \mathrm{Q}, \mathrm{~S})]$$

$$ [\mathrm{A} \rightarrow(\mathrm{R}) ; \mathrm{B} \rightarrow(\mathrm{P}) ; \mathrm{C} \rightarrow(\mathrm{R}) ; \mathrm{D} \rightarrow( \mathrm{Q}, \mathrm{~S})]$$

$$ [\mathrm{A} \rightarrow(\mathrm{P}) ; \mathrm{B} \rightarrow(\mathrm{R}) ; \mathrm{C} \rightarrow(\mathrm{S}) ; \mathrm{D} \rightarrow( \mathrm{Q})]$$

IIT-JEE 2005 Mains

MCQ (Single Correct Answer)

-1

What will be the minimum angle of incidence such that the total internal reflection occurs on both the surfaces?

IIT-JEE 2005 Mains Physics - Geometrical Optics Question 18 English

30$$^\circ$$

45$$^\circ$$

50$$^\circ$$

60$$^\circ$$

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