Physics: Radioactivity And Particles: Units
Akopọ
Radioactivity is invisible, silent and completely beyond the reach of your senses. The only way to say anything useful about a radioactive source is to attach numbers to it, and numbers in physics are worthless without the right units.
This short lesson covers the handful of units you need for the whole radioactivity topic: the becquerel for activity, the centimetre for the distances and thicknesses used in absorption experiments, and the second, minute and hour for the times that appear in half-life questions. You will also practise the conversions that examiners build into calculation questions.
Awọn Afojusun
- Use the following units: becquerel (Bq), centimetre (cm), hour (h), minute (min) and second (s)
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Physics: Radioactivity And Particles: Units. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- The becquerel is the unit of: A) Half-life B) Activity C) Absorbed dose D) Count rate in a detector Answer: B
- An activity of 1 Bq means: A) One decay per minute B) One decay per hour C) One decay per second D) One thousand decays per second Answer: C
- A source has an activity of 2.5 kBq. In becquerels this is: A) 25 Bq B) 250 Bq C) 2500 Bq D) 25000 Bq Answer: C
- A detector records 600 counts in 5 minutes. The count rate in counts per second is: A) 2 counts per second B) 120 counts per second C) 12 counts per second D) 0.5 counts per second Answer: A
- An absorber is 6 mm thick. In centimetres this is: A) 0.06 cm B) 0.6 cm C) 6 cm D) 60 cm Answer: B
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Physics: Radioactivity And Particles: Units? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
Ṣe igbasilẹ ohun elo naa lori Google Playstore
Gbogbo ohun ti o nilo lati ṣe dara julọ ninu JAMB, WAEC ati NECO.
