2020 NECO GCE Physics Questions and Answers to OBJ/Essay is right here for you. Get NECO Physics Expo
2020 NECO GCE Physics Questions and Answers to OBJ/Essay – See all the answers and questions on Physics for this year’s NOV/DEC NECO GCE Physics practical exams both Objectives and Essay Expo here. Check below for the questions and answers.
NECO GCE Physics Answers 2020/2020
NECO Physics Objectives and Essay Questions and Answers
. A stone projected horizontally from the top of a tower with a speed of 4 ms-1 lands on the level ground at a horizontal distance of 25 m from the foot of the tower. Calculate the height of the tower. [ g = 10 ms-2 ]
2. (a) Explain diffusion.
(b) Give one reason why the rate of diffusion is higher in gasses than in liquid at the same temperature.
3. (a) State two conditions under which photo-electrons can be emitted from the surface of a metal.
(b) List two particles characteristics of electromagnetic waves.
ANS: (a) Conditions for emission of photoelectrons
– the wavelength of incident radiation must be less than the threshold wavelength of metal surface.
– the frequency of incident radiation must be greater than the threshold frequency.
– the energy of the incident photons (radiation) must be greater than the Work function of the metal
(b) Particle characteristics of electromagnetic waves;
e.g – Photoelectric effect
– Thermionic emission
– Radiations from heated bodies (Black body)
– Emission and absorption of light (incandescence)
– Compton effect.
Simple way to Pass NECO 2020 GCE Physics Examination
- NECO 2020 GCE syllabus is the very first thing you should think of. If you know the syllabus for Physics Practical Specimen, then you can easily know which area to concentrate. So I recommend that you should get this NECO GCE Syllabus.
- NECO GCE Past questions on Physics should come into your mind. Having the past question for any subject helps you to know the manner and the likes of questions you should expect from that subject so as to be able to answer them accordingly.
- After getting all these items, then the next step is for you to sit down and study this subject effectively and all the questions will be very simple for you.
- Lastly, I will recommend that you should have sound knowledge about Physics because this is what will be required of you.
Pure NECO GCE 2020 Physics Answers and Expo
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