WAEC (WASSCE) Physics · Atomic and nuclear physics
Structure of the atom: WAEC Physics Past Questions and Answers
What the WAEC syllabus covers in Structure of the atom
Our summary: Models of the atom, energy levels, the photoelectric effect and X-rays.
- Models of the atom (Thomson, Rutherford, Bohr and electron-cloud (wave-mechanical) models should be discussed qualitatively. Limitations of each model. Quantization of angular momentum (Bohr).)
- Energy quantization (Energy levels in the atom. Colour and light frequency. Treatment should include the following: Franck-Hertz experiment, line spectra from hot bodies, absorption spectra and spectra of discharge lamps.)
- Photoelectric effect (Explanation of photoelectric effect. Dual nature of light. Work function and threshold frequency. Einstein's photoelectric equation and its explanation. Application in T.V., camera, etc. Simple problems may be set.)
- Thermionic emission (Explanation and applications.)
- X-rays (Production of X-rays and structure of X-ray tube. Types, characteristics, properties, uses and hazards of X-rays. Safety precautions.)
Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)).
WAEC (WASSCE) Physics questions on Structure of the atom
- WAEC 2024Light of energy 1.12 x 10 ^ -18 J is incident on a metal of ejected electrons with maximum energy of 8.0 x 10 ^ -19 J. Calculate the threshold frequency of the…
- WAEC 2024All of the following uses are practical applications of x-ray except
- WAEC 2024What are cathode rays?
- WAEC 2024The main difference between X-rays and gamma rays is in their
- WAEC 2023When an electron jumps directly from an orbit of n = 4 to n = 2,
- WAEC 2023In the Rutherford scattering experiment, a beam of alpha particles was fired at a thin gold film and few of the particles were deflected considerably. This…
- WAEC 2023An electron moves from an energy level of -8.6 eV to another level of -3.5 eV. Determine the frequency of the absorbed radiation. [1 eV = 1.6 × 10^ 19 J, h =…
- WAEC 2021The electrons in a cathode-ray tube are produced by?
- WAEC 2020Which of the following statements about photoelectrons is correct?
- WAEC 2020In photoelectric effect, the number of electrode emitted per second from a metallic surface is proportional to the
- WAEC 2019Which of the following statements about a neutral atom is correct? The
- WAEC 2019When ultraviolet light is incident on certain metallic p articles are emitted. These particles are called
- WAEC 2018In which of the following situations is photoelectric effect employed? I. Automatic devices for switching on light at dusk II. Automatic doors in departmental…
- WAEC 2017Which of the following processes is not a surface phenomenon?
- WAEC 2015Which of the following radiations constitutes a stream of electrons?
- WAEC 2013The minimum energy required to cause photoelectric emission when the surface of a metal is irradiated with electromagnetic radiation of suitable frequency is…
- WAEC 2013The work function of a metal is 2.56 x 10-19J. Calculate the frequency of a photon whose energy is required to eject from the metal an electron with kinetic…
- WAEC 2012A metal with a work function of 3.0ev is irradiated with ultraviolet light of energy 4.0 ev. The kinetic energy of the ejected electron is
- WAEC 2012Which of the following statements about X-rays is correct? X-rays
- WAEC 2012An atom in an excited state is one whose
- WAEC 2011For photoelectric emission, the threshold frequency is the
- WAEC 2011Which of the following properties is not applicable to X-rays? They
- WAEC 2010In a cathode ray tube, the function of the x-plates is to
Years with Structure of the atom questions in DeeepSolve's question bank
From the past questions DeeepSolve holds, not a count of everything the exam body has set.
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