Tamil Nadu (English Medium) Std 6 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
The emission of light given out by an organism is called

(A) Luminescence	(B) Bioluminescence
(C) Optical luminescence	(D) Non luminescence

Question-2
Substance which allow the light to pass through them completely are called

(A) translucent substance	(B) transparent substances
(C) opaque substances	(D) non luminous substances

Question-3
Objects that cast shadow are _________ objects.

(A) Transparent	(B) Opaque
(C) Luminous	(D) Translucent

Question-4
An object which is capable of giving light is called

(A) Bio luminous bodies	(B) Source of light
(C) Non-luminous bodies	(D) Luminous bodies

Question-5
_________ is a narrow path along which the light travels.

(A) Ray	(B) Beam
(C) Penumbra	(D) Umbra

Question-6
The substances which do not allow the light to pass through them are called

(A) Non luminous bodies	(B) Opaque substances
(C) Transparent substances	(D) Translucent substances.

Question-7
_____________ occurs when earth comes in between sun and moon.

(A) Solar eclipse	(B) Lunar eclipse
(C) Linear eclipse	(D) None of these

Question-8
Burning candle, oil lamp, tube light are _____________

(A) Natural source of light	(B) Artificial source of light
(C) Examples of bioluminescence	(D) None of these.

Question-9
Substances which allow only partial transmission of light to pass through them are called

(A) Opaque substances	(B) Luminous substances
(C) Transparent substances	(D) Translucent objects

Question-10
When opaque objects are placed infront of sunlight or torch light ________ is formed behind the object.

(A) Shadow	(B) Light
(C) Sound	(D) Heat

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Std 6

Tamil Nadu (English Medium)

Practice in Related Chapters
Chemistry in Daily Life
The World of Plants
Separation of Substances
Cell Structure
Our Environment
Changes Around Us
Light
Food Habit
Measurement and Motion
Types of Energy
Magnetism
Structure of Living Organisms