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Physics

Physics
Brightness of bulb depends on voltage or current?

Current
Both A & B
Voltage
None

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Physics
Compressions and Rarefactions are characteristic of

Transverse waves
Neither of A & B
Longitudinal waves
Both A & B

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Physics
Which one of the following ray has minimum wavelength

Cosmic ray
Utraviolet ray
X-rays
Gamma ray

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Physics
The magnitude of buoyant force depends on the ________ of the fluid.

Volume
Temperature
Density
Mass

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Physics
Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

12.33 diopters
-12.33 diopters
4.33 diopters
-4.33 diopters

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Physics
The device used to change the speed of an electric fan is

Switch
Regulator
Amplifier
Rectifier

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