Presently TODAY’S NECO PHYSICS ANSWERS | SOLVED NECO EXPO RUNZ OBJ & ANSWERS 2017, NECO Physics 2017 Questions with Theory and Objective Answers for June-July expo runz SSCE Exam is Out.
Senior School Certificate Examination – SSCE Physics paper of the National Examination Council (NECO) will be written on Monday, 10th July, 2017. As a matter of fact take Note of an important information about Neco Physics expo below;
Finally the O’level physics exam is for Paper III & II: Objective & Essay which will commence from 10.00am and end by 1.00pm. As a a matter of fact the examination will last 3 hours.
This article have post’s with samples of the neco physics questions for candidates that will participate in the examination. Read More.
Furthermore student’s are to Note that the questions from Neco past questions and answers that we feel are likely questions for SSCE preparation. Keep following this page and make sure you bookmark this site for reference purposes.
1. (a) A student makes a model of an atom. The model contains 24 electrons, 25 protons and 26 neutrons. Some of these particles are inside a nucleus at the centre of the model.
(i) Determine the nucleon number (mass number) of the atom.
(ii) Explain why the model represents a charged atom.
(iii) The student makes a new model of a different isotope of the same element. Describe the nucleus of this new model.
Ans: 1 (a)
(i) 51 B1
(ii) more protons than electrons or different number of protons and electrons positive and negative do not cancel.
(iii) 25 protons. a different number of neutrons.
2. Fig. 1.1 shows the distance-time graph for two cyclists A and B. They start a 500 m race together but finish the race at different times.
(a) Use Fig. 1.1 to determine
(i) the distance between A and B at time t = 20s,
(ii) the difference in the time taken by A and B for the race.
(b) Cyclist C starts the race at the same time as A and B and covers the first 200m of the race at a constant speed of 5.0 m/s. He then accelerates and finishes the race at t = 60s.
(i) On Fig. 1.1, draw the distance-time graph for cyclist C.
(ii) Calculate the average speed of cyclist C for the whole race.