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1. Question marks are mentioned with each Question.
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5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
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1
The image formed by a plane mirror is _____________________________ .
Rectangular
Erect
Perpendicular
None of these .
2
Which of the following is a parallel beam of light ?
3
When a parallel beam of incident light is reflected as a parallel beam in one direction _____________ reflection takes place.
Regular
Irregular
Diffused
None of these.
4
This process of reflection of light several times between reflecting surfaces is known as ________________________ .
Multiple reflection of light D
Regular reflection of light
Diffused reflection of light
5
_____________________ of light occurs from smooth surfaces like a plane mirror or a highly polished metal surfaces.
Diffused reflection
Regular reflection
Irregular reflection
6
Even if the screen is placed in front of the plane mirror, then the image cannot be formed on the screen. This type of image is called as ______________________ .
Virtual image
Real image
Both (a) and (b)
7
_______________________ is defined as the process of turning back of light in the same medium on striking the surface of the object.
Refraction
Reflection
Dispersion
8
Which of the following is divergent Beam of light ?
9
Which of the following is a translucent object ?
Butter paper
Glass
Water
Clean air
10
Which of the following are correct :
(a) Periscope is the instrument which works on the principle of multiple reflection.
(b) In periscope, the mirrors are aligned parallel to each other at a 600 angle with the addition of two simple lenses.
Only (a) is correct.
Only (b) is correct.
Both (a) and (b) are correct.
None of these
11
(a) Reflection by a regular surface is referred to as regular reflection.
(b) The small bumps and irregularities on a rough surface cause each of the light rays to reflect in different directions. This kind of reflection is called irregular or diffused reflection.
12
(a) Clean water is opaque object.
(b) Smoked glass is an translucent object.
(c) Wood is a opaque object.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
All of these.
13
(a) When a parallel beam of incident light is reflected as a parallel beam in one direction Irregular Reflection takes place.
(b) When a parallel beam of incident light is reflected in different directions or gets scattered Diffused Or Irregular Reflection takes place.
Both (a) and (b) correct.
14
(b) Irregular reflection is also known as diffused reflection.
(c) When a parallel beam of incident light is reflected as a parallel beam in one direction Regular Reflection takes place.
Only (c) is correct.
All of these
15
(a) Reflection is defined as the process of turning back of light in the same medium on striking the surface of the object.
(b) The light incident on a smooth surface incident in a single direction is called as irregular reflection.
(c) When light incident on a rough surface, it reflects in many directions.This is called as diffuse reflection.