Physics
A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

Decreasing the radius of the capillary tube
Increasing the radius of the capillary tube
Increasing the height of water in the vessel
None of these

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Physics
Which one of the following is not a property of electromagnetic waves?

Oscillating electric field and magnetic field are perpendicular to each other.
Electromagnetic waves do not show interference and diffraction.
Electromagnetic waves do not require a medium to propagate.
Electromagnetic waves are transverse waves

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