While watching 3D movies at the theater, we have to wear special glasses because?
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Why metals conduct electricity?
The motion of a freely falling body is an example of ______________ accelerated motion.
What is the unit of the physical quantity "Magnetic field strength"?
The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called ___
A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is
A Sonar of a ship sends sounds waves of speed 1600 m/s. These waves are reflected back by the ocean floor in 4 seconds. Find the depth (in m) of the ocean floor.
The color with the longest wavelength is
Each color has a different wavelength.
Red has the longest wavelength and violet has the shortest wavelength.
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