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Class 7 Exam  >  Class 7 Tests  >  Science Olympiad Class 7  >  Olympiad Test: Light - 1 - Class 7 MCQ

Olympiad Test: Light - 1 - Class 7 MCQ


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20 Questions MCQ Test Science Olympiad Class 7 - Olympiad Test: Light - 1

Olympiad Test: Light - 1 for Class 7 2024 is part of Science Olympiad Class 7 preparation. The Olympiad Test: Light - 1 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Light - 1 MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Light - 1 below.
Solutions of Olympiad Test: Light - 1 questions in English are available as part of our Science Olympiad Class 7 for Class 7 & Olympiad Test: Light - 1 solutions in Hindi for Science Olympiad Class 7 course. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free. Attempt Olympiad Test: Light - 1 | 20 questions in 40 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study Science Olympiad Class 7 for Class 7 Exam | Download free PDF with solutions
Olympiad Test: Light - 1 - Question 1
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A substance which transmits most of the light rays incident on it is called

Olympiad Test: Light - 1 - Question 2
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The distance between the sun and the earth is

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Olympiad Test: Light - 1 - Question 3
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Which of the following is a natural source of light

Olympiad Test: Light - 1 - Question 4
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Light is
Olympiad Test: Light - 1 - Question 5
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The earth light can be seen from
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Earth is a non-luminous body and does not emit any light. 

Olympiad Test: Light - 1 - Question 6
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The speed of light is
Olympiad Test: Light - 1 - Question 7
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The speed of light is
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The speed of light decreases with an increase in the density of the medium. 

Olympiad Test: Light - 1 - Question 8
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Image formed by plane mirror is always
Olympiad Test: Light - 1 - Question 9
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An image obtained on screen is
Olympiad Test: Light - 1 - Question 10
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Which of the following letters will be seen without any change in a plane mirror?
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T is a laterally symmetrical object and hence its image in a plane mirror would be the same as itself.

Olympiad Test: Light - 1 - Question 11
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A source of light is
Olympiad Test: Light - 1 - Question 12
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As the distance of source increases
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The energy of the light keeps on getting absorbed and transformed as it moves through a medium. Therefore, its intensity decreases.

Olympiad Test: Light - 1 - Question 13
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Which of the following statement is true?
Olympiad Test: Light - 1 - Question 14
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A spherical mirror with its reflecting surface on the outside is a
Olympiad Test: Light - 1 - Question 15
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Which of the following is luminous?
Detailed Solution for Olympiad Test: Light - 1 - Question 15

Objects that can emit light energy by themselves are known as luminous objects.

These objects can cause a sensation of light.

The luminous objects are visible as they emit light on their own.

Olympiad Test: Light - 1 - Question 16
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Which of the following is transparent?
Olympiad Test: Light - 1 - Question 17
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Which of the following is opaque?
Olympiad Test: Light - 1 - Question 18
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Shadows are formed because
Olympiad Test: Light - 1 - Question 19
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A magnifying glass is nothing but
Detailed Solution for Olympiad Test: Light - 1 - Question 19

A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. A sheet magnifier consists of many very narrow concentric ring-shaped lenses, such that the combination acts as a single lens but is much thinner.

Olympiad Test: Light - 1 - Question 20
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Following conditions are true for virtual image
Detailed Solution for Olympiad Test: Light - 1 - Question 20

a) The virtual image is always erect. The common example of virtual image is the image formed in the mirror when we stand in front of that mirror. 

b) In reality, these rays come from the points on the mirror where they are reflected. The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror.

c) Virtual images cannot be obtained on the screen because the image formed is from the light rays that do not meet but appear to meet when they are produced backwards. 

 

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