# Olympiad Test: Light - 2

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## 10 Questions MCQ Test Science Olympiad Class 7 | Olympiad Test: Light - 2

Olympiad Test: Light - 2 for Class 7 2022 is part of Science Olympiad Class 7 preparation. The Olympiad Test: Light - 2 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Light - 2 MCQs are made for Class 7 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Light - 2 below.
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Olympiad Test: Light - 2 - Question 1

### A narrow stream of light is called a

Olympiad Test: Light - 2 - Question 2

### A broad stream of light is called a

Olympiad Test: Light - 2 - Question 3

### Radius of curvature for a plane mirror is

Olympiad Test: Light - 2 - Question 4

The distance between the focus and the pole of the mirror is called

Olympiad Test: Light - 2 - Question 5

In case of mirror match the columns A with columns B:

Olympiad Test: Light - 2 - Question 6

At a particular time of a day, the ratio of height of an object and the length of it’s shadow is ‘x’. Using this calculate the height of a tree if the length of the shadow of tree is L.

Detailed Solution for Olympiad Test: Light - 2 - Question 6

During the same time the ratio of the height and length of any object will be equal to that of any other including ‘x’.
Step 1- Let the height of the tree be ‘h’. The length of the tree is given as ‘L’
∴ the ratio of its height and length would be h/L
Step 2- This ratio will be the same as ‘x’

Olympiad Test: Light - 2 - Question 7

Prism has

Olympiad Test: Light - 2 - Question 8

A series of fast moving still pictures can create an illusion of movement because

Detailed Solution for Olympiad Test: Light - 2 - Question 8

This happens due to a phenomenon called persistence of vision.

Olympiad Test: Light - 2 - Question 9

In a periscope, the reflecting mirror will be

Olympiad Test: Light - 2 - Question 10

Periscope is used to