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Light travels fastest in a vacuum at approximately 299,792 km/s. In water or any other medium, it slows down due to the medium's refractive properties. This fact highlights the unique behavior of light compared to sound, which indeed travels faster in solids due to better transmission through denser material.
A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole?
The distance- time graph for a body moving at uniform speed is?
In a concave mirror which of the following pair of position of object – size of the image is correct?
I. At infinity – point sized
Which of the following gas is used in the manufacture of Vanaspati Ghee?Â
A fluid flows through a horizontal pipe. The pressure drops by 2000 Pa and speed increases from 2 m/s to 4 m/s. Find density.
‘Lubb-dupp’ sound is produced due to the action of
Which of the following is a characteristic of a conductor? Â
A toroid has a core (non-ferromagnetic) of inner radius 23 cm and outer radius 28 cm, around which 4000 turns of a wire are wound. If the current in th...
Stereo was invented by               .
Which of the following is not a nuclear reaction?
