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1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
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4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
_______________________ is defined as the process of turning back of light in the same medium on striking the surface of the object.
Refraction
Reflection
Dispersion
None of these.
2
Which of the following are correct :
(a) The images that can be formed on the screen are called real images.
(b) The images that cannot be taken on the screen are called virtual images.
Only (a) is correct.
Only (b) is correct.
Both (a) and (b) are correct.
3
The angle between the normal and the reflected ray, at the point of incidence, is called _________________ .
Angle of reflection .
Plane of reflection
Irregular reflection .
None of these .
4
Pericscope works on the principal of _____ of light.
Refrantion
shadow
None of these
5
The light incident on a smooth surface reflected in a single direction is called as ____________________ reflection.
Regular
Irregular
Diffuse
6
A medium in which light can travel freely over large distances is called a transparent medium. Water, glycerin, glass and clear plastics are _____________________ .
Transparent
Translucent
Opaque
7
A periscope is a tool we use to see things that would otherwise be _______________________.
Hidden
Obstructed
Not in the direct line of sight
All of these
8
Dentists use _____________________ to see large images of the teeth.
Concave mirrors
Convex mirrors
Concave lens
Convex lens
9
The size of the image formed by __________________ mirror is equal to that of the object.
Plane mirror
Concave mirror
Convex mirror
10
(a) Plane mirror are used as looking mirrors in our homes.
(b) A plane mirror is made from a glass plate, a few millimetres thick.
(c) One surface of the glass is polished to a high degree of smoothness, forming the front surface of the mirror.
(d) The back surface of mirror is silvered, i.e., coated with a thin layer of silver, aluminium or some other shiny, opaque material.
Only (a) and (b) are correct.
Only (a) and (c) are correct.
Only (a) and (d) are correct.
All of these.
11
The Image formed by a convex mirror is ________________.
Virtual
Erect
Smaller in size than the object
All the above
12
(a) In a concave mirror, if object is between infinity and the pole, the image formed between focus and the pole, than the nature of image is virtual, smaller and erect.
(b) In a convex mirror, if object is at infinity, the image formed at the focus F, than the nature of image is Virtual, point -sized.
13
(a) Real images can be formed on the screen.
(b) Virtual images can not be formed on the screen.
(c) Real images are formed by actual intersection of light rays.
Only (b) and (c) are correct.
14
(a) When the group of rays are parallel to each other such beam of light is called a parallel beam of light.
(b) When the group of rays are not parallel to each other but are converging at a point such beam of light is called a convergent beam of light.
(c) When the group of rays are not parallel to each other but are intersecting each other such beam of light is called a convergent beam of light.
15
(a) A plane mirror forms a virtual image, Such an image is nor formed by the actual intersection of light rays and cannot be formed on a screen.
(b) The image formed by a plane mirror is erect. So, the image of a person formed by a plane mirror has the head at the top and the feet at the bottom.
(c) The size of the image formed by a plane mirror is equal to that of the object.
Only (c) is correct.