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Are these answers correct? if not which are the correct answers for Q 1 & 2? Question 1 0.5 pts When you shine light on

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Are these answers correct? if not which are the correct answers for Q 1 & 2?

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Question 1 0.5 pts When you shine light on a clean metal surface, electrons can be ejected. How do each of the changes below affect the ejected electrons? decreasing the brightness of fewer electrons aree w the light decreasing the wavelength of the light ejected electrons mc v [ Choose | ejected electrons move away faster fewer electrons are ejected Question 2 0.5 pts Which will have a higher "binding energy" (aka "threshold frequency"), hydrogen or helium? O Helium, because it has a higher Zeff. O Helium, because it has a lower Zeff. O Hydrogen, because it has a higher Zeff. O Hydrogen, because it has a lower Zeff

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