How many protons are present in a single deuterium nucleus?
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When a green colored object is illuminated by a green light it will appear as what color to the human eye?
How d o the radio-waves pass through walls ?
Consider earth's equator is covered with a measuring tape touching the ground such both the ends touch each other. if the tape is lifted 1 meter from the ground, what would be the distance between two ends of tape?
Why is the apparent altitude of a star increased by reflection in atmosphere ?
What is periodic wave?
Explain why does a tea kettle sing?
our breath can produce current?
When a glass cylinder is filled with water and a piece of thick paper is placed at the mouth and the cylinder is inverted, the paper dies not fall. Why ?
By passing current through a wire wrapped around an iron rod, william sturgeon invented the?
How is soda in a glass sucked up with the help of a straw ?
What is tone control?
Explain the difference between free electron theory and band theory of solids?