Question
The functioning of a quartz crystal in a watch is based
on which principle?Solution
Quartz crystals in watches work on the piezoelectric effect, where they generate an electric charge in response to mechanical stress, maintaining precise timekeeping.
Which of the following is the most reactive element in the Halogen series?Â
Which of the following is the ratio of Oxygen to Nitrogen in the air?
If a medium has a critical angle for total internal reflection from the medium to vacuum as 90°, what is the velocity of light in the medium? (Take c =...
Which gas is responsible for the ozone layer's depletion?
The mass of a body on earth is 10 Kg, acceleration due to gravity, g (e) is 10 m/s² . If acceleration due to gravity on the moon is g (m) 6 m/s² , the...
Which of the following is the first organic compound that was synthesised in the laboratory?
Which of the following is a primary consumer in a food chain?
Which of the following gas is used in anesthesia?
The refractive index of glass is 1.5. What is the speed of light in glass? Speed of light in vacuum is 3.0 x 108 m/s.
An object is placed on the axis of a concave mirror at its focus (F). The image formed is:
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