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Physics
A Level

what is the centripetal force?

a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.

Answered by Othman A. Physics tutor
1048 Views

Explain the wave - particle duality

If electrons are fired through a thin piece of graphite towards a screen an interference pattern forms.We can explain this by thinking of the electrons as having a wavelength, called the de Broglie wavele...

Answered by Physics tutor
1338 Views

Describe and explain the photoelectric effect.

Consider a single photon (a particle of light) of a particular energy striking the surface of a metal. If the energy of this photon exceeds the work function of the metal, it will remove a single electron...

Answered by Abbie R. Physics tutor
1311 Views

Students conducted a Young's experiment. Explain how pattern seen on the screen is created.

Light firstly goes through a single slit, this makes light coherent and monochromatic. Then, light diffracts on the double slit, undergoes superposition and constructively and destructively interferes cre...

Answered by Ignacy O. Physics tutor
1952 Views

Explain the difference between the direction of the conventional current and the direction of electron flow.

The direction of the conventional current is from positive terminal to negative terminal. The direction of electron flow is from negative terminal to positive terminal. This is because electrons are a neg...

Answered by Ignacy O. Physics tutor
5007 Views

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