Home » Posts tagged 'Smoke detector'

Tag Archives: Smoke detector

A question from photoelectric effect

If light of wavelength lambda is incident on metal surface, the ejected fastest electron has speed v. If the wavelength is changed to 3/4(lambda), the speed of the fastest emitted electron will be?

Asked Adithya

 

Ionizing Power of alpha and beta particles

Which has greater ionization power alpha or beta?

 

(Question received via speak pipe – a facility for the visitors to ask questions orally, if you have a mic)

 

Answer:

 

Alpha particles have greater ionization power as they have two units of positive charge and 4 units of mass, whereas beta has only one unit of negative charge and negligible mass as compared to alpha.

 

English: Diagram of an alpha particle with notes.

 

%d bloggers like this: