4 nodes
5 nodes
3 antinodes
4 antinodes
Correct answer is A
The 3rd overtone for an open pipe has 5 antinodes and 4 nodes.
A rainbow is formed when sunlight is incident on water droplets suspended in the air due to
interference
refraction
dispersion
diffraction
Correct answer is C
No explanation has been provided for this answer.
0
\(\frac{A}{2}\)
\(\frac{A}{4}\)
\(2A\)
Correct answer is D
This is a type of constructive interference. When two waves of equal amplitude are interfering constructively, the resulting amplitude is twice as large as the amplitude of an individual wave.
= A + A = 2A
A vapour whose molecules are in dynamic equilibrium with those of its own liquid is said to be
unsaturated
gaseous
saturated
diffused
Correct answer is C
A saturated vapour is one which is in a dynamic equilibrium with its own liquid
The maximum density of water occurs at a temperature of
0°C
4°C
37°C
273°C
Correct answer is B
This is as a result of the Hydrogen bonding in water. Due to the high Kinetic Energy of water, the hydrogen bonds can't hold for too long but from 4°C, there's an increase in the hydrogen bonds hence strenghtening it. From the point of production of more hydrogen bonds, the bonding is no longer easily broken. Generally, these and a few factors based on these cause the density of water to be maximum at 4°C.
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