1
IIT-JEE 2010 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

A biconvex lens of focal length 15 cm is in front of a plane mirror. The distance between the lens and the mirror is 10 cm. A small object is kept at a distance of 30 cm from the lens. The final image is

A
virtual and at a distance of 16 cm from the mirror.
B
real and at a distance of 16 cm from the mirror.
C
virtual and at a distance of 20 cm from the mirror.
D
real and at a distance of 20 cm from the mirror.
2
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

A ball is dropped from a height of 20 m above the surface of water in a lake. The refractive index of water is 4/3. A fish inside the lake, in the line of fall of the ball, is looking at the ball. At an instant, when the ball is 12.8 m above the water surface, the fish sees the speed of ball as (Take g = 10 m/s$$^2$$)

A
9 m/s
B
12 m/s
C
16 m/s
D
21.33 m/s
3
IIT-JEE 2008 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

A light beam is travelling from Region I to Region IV (Refer figure). The refractive index in Regions I, II, III and IV are $${n_0},{{{n_0}} \over 2},{{{n_0}} \over 6}$$ and $${{{n_0}} \over 8}$$, respectively. The angle of incidence $$\theta$$ for which the beam just misses entering Region IV is

IIT-JEE 2008 Paper 2 Offline Physics - Geometrical Optics Question 6 English

A
$${\sin ^{ - 1}}\left( {{3 \over 4}} \right)$$
B
$${\sin ^{ - 1}}\left( {{1 \over 8}} \right)$$
C
$${\sin ^{ - 1}}\left( {{1 \over 4}} \right)$$
D
$${\sin ^{ - 1}}\left( {{1 \over 3}} \right)$$
4
IIT-JEE 2008 Paper 2 Offline
MCQ (Single Correct Answer)
+4
-1

An optical component and an object S placed along its optic axis are given in Column I. The distance between the object and the component can be varied. The properties of images are given in Column II. Match all the properties of images from Column II with the appropriate components given in Column I. Indicate your answer by darkening the appropriate bubbles of the 4 $$\times$$ 4 matrix given in the ORS.

Column I Column II
(A) IIT-JEE 2008 Paper 2 Offline Physics - Geometrical Optics Question 7 English 1 (P) Real Image
(B) IIT-JEE 2008 Paper 2 Offline Physics - Geometrical Optics Question 7 English 2 (Q) Virtual Image
(C) IIT-JEE 2008 Paper 2 Offline Physics - Geometrical Optics Question 7 English 3 (R) Magnified Image
(D) IIT-JEE 2008 Paper 2 Offline Physics - Geometrical Optics Question 7 English 4 (S) Image at infinity

A
A$$\to$$(P, Q, R); B$$\to$$(Q); C$$\to$$(P, R, S); D$$\to$$(P, Q, R, S)
B
A$$\to$$(P, Q, R, S); B$$\to$$(Q); C$$\to$$(P, Q, R, S); D$$\to$$(P, Q, R, S)
C
A$$\to$$(P, Q, R); B$$\to$$(Q); C$$\to$$(P, R, S); D$$\to$$(P, Q, S)
D
A$$\to$$(P, Q); B$$\to$$(Q); C$$\to$$(R, S); D$$\to$$(P, Q, R, S)
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