What is the relationship between the wavelength of a wave and its energy
2 answers:
Answer:
Inverse relation.
Explanation:
Let E is the energy of the wave and is its wavelength. The energy of the wave is given by :
..............(1)
Where
h = Planck's constant
c = speed of light
= wavelength of a wave
It is clear from equation (1) that the energy is inversely proportional to the wavelength of a wave. So, there exists an inverse relationship between the energy and the wavelength of the wave.
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Answer:
False
Explanation:
The torque exerted by a force is given by:
where
F is the magnitude of the force
d is the distance between the point of application of the force and the pivot
is the angle between the directions of F and d
We see that the magnitude of the torque depends on 3 factors. In this problem, we have 2 forces of equal magnitude (so, equal F). Moreover, one of the forces (let's call it force 1) acts farther from the pivot than force 2, so we have
However, this does not mean that force 1 produces a greater torque. In fact, it also depends on the angle at which the force is applied. For instance, if the first force is applied parallel to d, then we have
and the torque produced by this force would be zero.
So, the statement is false.