Question
If an electron has a wavelength, does it also have a colour?
✓
Answer
Colour is a characteristic of electromagnetic waves. Electrons behave as a de-Broglie wave because of their velocity. A de-Broglie wave is not an electromagnetic wave and is one dimensional. Hence, no colour is shown by an electron.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Consider the situation shown in figure. The switch is closed at t = 0 when the capacitors are uncharged. Find the charge on the capacitor C1 as a function of time t.
A rigid wire consists of a semi-circular portion of radius R and two straight sections The wire is partially immersed in a perpendicular magnetic field B, as shown in the figure. Find the magnetic force on the wire if it carries a current i.
A wire is bent in the form of a regular hexagon and a total charge q is distributed uniformly on it. What is the electric field at the centre? You may answer this part without making any numerical calculations.
By what fraction does the mass of a spring change when it is compressed by 1cm? The mass of the spring is 200g at its natural length and the spring constant is 500N/m.
Explain series connection of cells. Derive the formula for equivalent emf and equivalent internal resistance for series connection of cell.
A tuning fork produces 4 beats per second with another tuning fork of frequency 256Hz. The first one is now loaded with a little wax and the beat frequency is found to increase to 6 per second. What was the original frequency of the tuning fork?
A positive charge q is placed in front of a conducting solid cube at a distance d from its centre. Find the electric field at the centre of the cube due to the charges appearing on its surface.
What is natural frequency of a system ? What is resonance? - Explain using a simple example.
###
What is resonance ? Explain using an appropriate example.
###
What is resonance ? Explain using an appropriate example.
Write down the difference between series and parallel connection of capacitors
What will be the radius of a conducting sphere having electric capacitance of one Farad?