An object moving at a speed of towards a concave mirror of focal length is at a distance of . The average speed of the image is
1
2
3
4
Official Solution
Correct Option:
(1)
According to mirror formula
Here and
As the object moves at a constant speed of after the new position of image is
The shift in the position of image in is
Average speed of image
02
PYQ 2010
medium
physicsID: amueee-2
A square card of side length is being seen through a magnifying lens of focal length . The card is placed at a distance of from the lens. The apparent area of the card through the lens is
1
2
3
4
Official Solution
Correct Option:
(1)
Focal length of converging lens
From lens formula
or
or Magnification, Apparent area of card through lens
03
PYQ 2011
medium
physicsID: amueee-2
What is the refractive index of material of a plano convex lens, if the radius of curvature of the convex surface is and focal length of the lens is ?
1
2
3
4
Official Solution
Correct Option:
(4)
According to lens makers formula
Here, (For plane surface)
; or
04
PYQ 2012
medium
physicsID: amueee-2
An object is placed at a distance of from co-axial combination of two lenses and contact. The combination forms a real image three times the size of the object. If lens concave with a focal length of . The nature and focal length of lens is
1
convex, 12 cm
2
concave, 12 cm
3
convex, 6 cm
4
convex, 18 cm
Official Solution
Correct Option:
(3)
Magnification Focal length of co-axial combination
Hence, lens is convex lens.
05
PYQ 2012
easy
physicsID: amueee-2
A object is placed perpendicular to the axis of a convex mirror of focal length at a distance of . The size of the image is
Official Solution
Correct Option:
(1)
06
PYQ 2013
medium
physicsID: amueee-2
An object and its real image are located at distances and respectively from the two principal foci of a convex lens. The linear magnification of the image is near to
1
1.3
2
-1.3
3
1.8
4
-1.8
Official Solution
Correct Option:
(2)
In the figure
using
07
PYQ 2013
medium
physicsID: amueee-2
A microscope is focused on a coin lying at the bottom of a beaker. The microscope is now raised up by . To what depth should the water be poured into the beaker so that coin is again in focus? (Refractive index of water is )
1
2
3
4
Official Solution
Correct Option:
(4)
Suppose initial height of the water level was . Initial position of the observer was and final position is
Now for the image to be formed at the same place. From adjacent figure
(Object distance should be same)
Water level increased by .
08
PYQ 2014
hard
physicsID: amueee-2
A man running at a speed is viewed in the side view mirror of radius of curvature of a stationary car. Calculate the speed of image when the man is at a distance of from the mirror
1
2
3
4
Official Solution
Correct Option:
(4)
A convex mirror is used for this purpose According to mirror formula Differentiate w.r.t. time
Also to find
09
PYQ 2014
medium
physicsID: amueee-2
Figure shows an object placed in front of two thin coaxial lenses and with focal lengths and , respectively. The object is from the lens I and the lens separation is . Where does the system of two lenses produce an image of the object ?
1
2
-
3
4
Official Solution
Correct Option:
(1)
For first lens
To find Using lens formula
For second lens
Again using lens formula
Final image will be formed at to the right of second lens
10
PYQ 2014
medium
physicsID: amueee-2
A beam of parallel light rays is incident on a solid transparent sphere of refractive index . If a point image is produced just at the back of the sphere, what is the refractive index of the sphere?
1
2
2
2.3
3
2.5
4
2.7
Official Solution
Correct Option:
(1)
Let be the centre and and the poles of the sphere. ray parallel to a diameter is first refracted into the glass along . For refraction at from air to glass, we have
Here and
11
PYQ 2016
hard
physicsID: amueee-2
Consider an optical system consisting of a concave mirror and convex mirror of radii of curvature and , respectively. Two mirrors are separated by a distance of . An object is placed at a distance from . The final image is formed at a distance
1
on the right of
2
on the left of
3
on the right of
4
on the left of
Official Solution
Correct Option:
(4)
Concave mirror with radius Convex mirror with radius Focus, Focus,
From mirror formula,
From concave minor, the image formed by minor will be
The image will be out of reflecting surface of mirror . So, this will be the final image and it will form on the left of .
About Ray Optics And Optical Instruments - AMUEEE
Ray Optics And Optical Instruments is a vital chapter for AMUEEE aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Ray Optics And Optical Instruments PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Ray Optics And Optical Instruments carry the most weight. Then, tackle the questions iteratively to solidify your understanding.
