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What Neco Sets In Physics And Hot Topics

Updated on by Isaac Inegbenehi
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2021 NECO PHYSICS: What are the areas Neco will set PHYSICS questions from and how do I get NECO Physics 2021 OBJ and theory questions answered correctly in the exam hall? Neco 2021 Physics Questions and how you can answer them correctly to get A1 is today exam topic.

NECO Physics is compulsory for every Neco 2021 Science Student. Continue reading for Sample Questions Neco would set in 2021 Physics or click here for Neco 2021 Physics Syllabus.

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NECO 2021 Physics Questions And Answers

You have asked the questions, what are the areas Neco sets questions in Physics? I am here to give you bold answers to your question.

To make this topic easy for you to understand, I will divide it into three sections. The three sections are:

  1. NECO 2021 Physics Objective Questions
  2. 2021 Neco Physics Theory Questions And Answers.
  3. Instructions To Pass Neco 2021 Examination.

Now that you are familiar with the various areas Physics Neco 2021/2019 questions will come from, the next thing is to know exactly what Neco will ask from these areas in 2021 Neco.

NECO 2021 Physics Objective Questions

As usual, you will be given questions and options A to D to choose from. Normally, the number of objective questions (OBJ) you are to answer in Neco 2021 Physics is 50.



The Following Are Sample Neco Objective Questions. They are likely Physics questions for Neco 2021.

1. A semiconductor diode is used in rectifying alternating current into direct current mainly because it
  • A. allows current to flow in either direction
  • B. is non-linear
  • C. offers a high input resistance
  • D. allows current to flow only in one direction
2. if ˆ†x is the uncertainty in the measurement of the position of a particle along the x-axis and ˆ†Pxis the uncertainty in the measurement of the linear momentum along the x-axis, then the uncertainty principle relation is given as
  • A. ˆ†x ˆ†Px ‰¥ h
  • B. ˆ†x ˆ†Px = 0
  • C. ˆ†x ˆ†Px < h
  • D. ˆ†x ˆ†Px = ˆž
3. When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will
  • A. increase
  • B. decrease
  • C. remain the same
  • D. increase then decrease
4.
I. Its velocity is constant
II. No work is done on the body
III. It has constant acceleration directed away from the centre
IV. The centripetal force is directed towards the centre5. Which combination of the above is true of a body moving with constant speed in a circular track?
  • A. II and IV
  • B. I and IV
  • C. II and III
  • D. I and III
6. The velocity ratio of a machine is 5 and its efficiency is 75%. What effort would be needed to lift a load of 150N with the machine?
  • A. 20N
  • B. 30N
  • C. 40N
  • D. 50N
7. Gamma rays are produced when
  • A. high velocity electrons are abruptly stopped in metals
  • B. energy changes occur within the nucleus of atoms
  • C. energy changes occur within the electronic structure of atoms
  • D. electrons are deflected in very strong magnetic fields

8. What is the speed of a particle of mass 10-27kg whose wavelength is 10-8m.

[h = 6.63 x 10-34Js]

  • A. 6.63ms-1
  • B. 66.30ms-1
  • C. 663.00ms-1
  • D. 6630.00ms-1
9. in a series R-L-C circuit at resonance, the voltages across the resistor and the inductor are 30V and 40V respectively, what is the voltage across the capacitor?
  • A. 30V
  • B. 40V
  • C. 50V
  • D. 70V
10. In the Rutherford scattering experiment, a beam of alpha particles was fired at a thin gold film with some of the particles being considerably deflected. This shows that
  • A. a gold nucleus contains protons, neutrons and electrons uniformly distributed in a tiny volume
  • B. the gold nucleus is positively charged and is concentrated in a tiny volume
  • C. the gold nucleus emitted alpha particles
  • D. the gold nucleus is concentrated in a tiny volume and contains alpha particles
11. 2311Na + Proton †’ pqX + alpha particle
What are the values of p and q respectively in the equation above?
  • A. 10 and 20
  • B. 12 and 24
  • C. 20 and 10
  • D. 24 and 12
12. A 3000W electric cooker is to be used on a 200V mains circuit. Which of the fuses below can be used safely with the cooker?
  • A. 2A
  • B. 5A
  • C. 10A
  • D. 20A
13. A galvanometer has a resistance of 5Ω. By using a shunt wire of resistance 0.05Ω, the galvanometer could be converted to an ammeter capable of reading 2Amp. What is the current through the galvanometer?
  • A. 2mA
  • B. 10mA
  • C. 20mA
  • D. 25mA
14. In fleming’s right-hand rule, the thumb, the forefinger and the middle finger if held mutually at right angles represent respectively, the
  • A. motion, the field and the induced current
  • B. induced current, the motion and the field
  • C. field, the induced current and the motion
  • D. induced current, the field and the motion
15. At what frequency would a 10H inductor have a reactance of 2000Ω?
  • A. Ï€/200Hz
  • B. Ï€/100Hz
  • C. 100/Ï€Hz
  • D. 100Ï€Hz
16. The core of an efficient transformer should consist of laminated pieces of metal in order to
  • A. increase the heat produced by increasing the eddy current
  • B. increase the heat produced by reducing the eddy current
  • C. reduce the heat produced by increasing the eddy current
  • D. reduce the heat produced by reducing the eddy current
17. The velocities of light in air and glass are 3.0 x 108ms-1 and 2.0 x 108ms-1 respectively. If the angle of refraction is 30°, the sine of the angle of incidence is
  • A. 0.33
  • B. 0.50
  • C. 0.67
  • D. 0.75
18. An astronomical telescope is said to be in normal adjustment when the
  • A. eye is accommodated
  • B. focal length of objective lens is longer than that of eye piece
  • C. final image is at the near point of eye
  • D. final image is at infinity
19. Which of the following electromagnetic waves is least energetic?
  • A. Infra-red rays
  • B. X-rays
  • C. Ultra-violet rays
  • D. Gamma rays
20. Steel is more suitable for permanent magnet than iron because the former
  • A. is easily demagnetized by shaing vigorously
  • B. is an alloy of many metals
  • C. is easily magnetized by alternating current through one cycle
  • D. retains magnetism more than iron
21. Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination?
  • A. 6.0V, 16Ω
  • B. 6.0V, 1Ω
  • C. 1.5V, 4Ω
  • D. 1.5V, 1Ω

 

Read Also: How to answer neco questions very fast

Note: Neco Physics Objective and Essay paper is on the 20th of June 2021.

Physics Neco 2021 Essay Questions

The following are the kind of questions you should expect in neco 2021 Physics Theory or Essay. They are hot cake questions:



  1. Define force
  2. What is a wave
  3. List and explain the types of waves
  4. Differentiate between tension, force and thrust
  5. List and explain the classification of waves
  6. What are optical instruments? Give examples
  7. Define electromagnetism
  8. Explain the methods of making magnets
  9. What are the characteristics of semiconductors
  10. Explain the concept of doping and how to form P and N type semiconductors.

That’s all for now… I shall update you when more real live questions and answers come up. However, I advise that you are hardworking so as to pass your Neco once and for all.

Read Also: How to read and pass neco in one day

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Comments

What Neco Sets In Physics And Hot Topics — 7 Comments

  1. MUJITTAFA on said:

    MUJITTAFA LAWAL

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    • MUJITTAFA LAWAL on said:

      G . D S S DAMARI

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