# 2023 NECO Physics Answers Objective & Essay Free Expo

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NECO Physics 2023 Answers: Get NECO Physics Objective & essay questions and answers for Thursday, 27th July 2023, Paper III & II: Objective & Essay –Physics.

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## NECO Physics Answers 2023 Objective

CACAA
51-60 AEBACCBCAC

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OR

### NECO Physics 2023 Answers Essay

(10a)
Photo-electrons are particles of light, or photons, that are emitted when a photon of sufficient energy strikes a material. They are the result of the photoelectric effect, which is the emission of electrons from a material when it is exposed to electromagnetic radiation. Photo-electrons are typically used in photoelectric detectors, which are used to measure the intensity of light.

(10b)
Threshold frequency = (Work function x 1.6×10^-19 J) / (h x 66×10^-34 Js)

Threshold frequency = (3.5eV x 1.6×10^-19 J) / (66×10^-34 Js)
Threshold frequency = 2.27×10^14 Hz
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NUMBER 11

(11a)
Pick any two(2)

1. Radiation Exposure: X-rays are a form of ionizing radiation, which can cause damage to living tissue, including skin and organs.
2. Cancer Risk: Lon