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At the drop of a hat - without any hesitation.
The reason for a swimming pool to appear less deep than the actual depth is –
The instrument used to see the distant objects on the Earth is –
A device used for converting A.C. into D.C. is called –
What is the phenomenon of bending of light around corners called?
The order of wavelengths for ordinary light is:
When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance?
In the absence of ozone layer, which rays will enter into atmosphere?
A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding?
In a convex lens, when the object is at infinity, then the position of image is ______.
Which of the following is a nonrenewable source of energy?
