The only light energy that can be seen., Materials that don't allow light to pass through., The main source of light and heat on Earth., The darkened area which is formed as a result of falling of light on an opaque object., Candles are from................sources of light., What is your favourite subject?, A form of energy., .................and................image of the candle flame is formed on the translucent paper., Who is your favourite teacher?, A property of light., What is your favourite animal?, The photographic (pin-hole) based on idea of travelling light in................., ................is not considered as a source of light as it reflects the sunlight falls on its surface., The..................object to the light source has the bigger shadow..

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