Email Required Name Required Website. Process of digestion in human beings. Essential and Non-essential Parts of the Flowers. Essential Elements in Plants. Tissues [Plant and Animal Tissues]. Transpiration In Plants. Question Bank Solutions Time Tables Advertisement Remove all ads. What makes the candle flame yellow and luminous? Solution Show Solution A candle burns with a yellow, luminous flame due to the incomplete combustion of wax in the air.
Class Popular Books. Download PDFs. Quick Revision Notes. Mind Maps. Sample Question Papers. Previous Years Papers. Important Questions. Supplementary Books. SnapSolve Tutor. Examples of luminous flames include burning wood, candles, Olympic cauldron etc.
A non-luminous flame is colourless and is much hotter. A non-luminous flame undergoes complete combustion as it draws much more oxygen and gets much hotter. Fire, Sun and star have produce visible light, But Tree do not produce visible light So Tree will be non-luminous body.
Luminous objects are those which emit light on their own like stars, sun, etc. All its light we see is reflected from the sun and to a very minor effect, from the reflection of sunlight off the earth. Non-luminous objects are the objects that do not have their own source of light energy and hence they cannot emit light and are not responsible for vision. These objects can only be visible due to luminous objects.
Examples of non-luminous objects are the moon, plants, and spoons. Non-luminous objects reflect the light falling on them and the reflected light are sensed by the eye and thus we are able to see non-luminous objects.
Mirror is not a luminous object since it does not emit its own light but reflects and absorbs light rays coming from the sun. Hint:The luminous body is the body that produces the light on their own. The sun is the natural luminous body and it is the chief source of the light.
The light is visible to the human eye by the process of reflection by the objects in the environment.
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