Light
Akopọ
Every time you glance in a mirror you are using a law of physics that is exact to a fraction of a degree: light bounces off a smooth surface so that the angle it arrives at equals the angle it leaves. That single rule lets us predict exactly where an image appears and why your reflection looks the size and distance it does.
In this topic you will define the normal and the angles of incidence and reflection, state and use the law of reflection, and describe the image formed by a plane mirror. You will also learn to construct and measure ray diagrams for reflection, the skill that turns the law into accurate predictions.
Awọn Afojusun
- [Core] Use ray diagrams to define the terms normal, angle of incidence and angle of reflection
- [Core] Describe the formation of an optical image by a vertical plane mirror and give its characteristics compared with the object, i.e. same size, same distance from mirror, laterally inverted
- [Core] State that for reflection, the angle of incidence is equal to the angle of reflection; recall and use this relationship
- [Supplement] Describe the formation of an optical image by a plane mirror and explain why it is virtual
- [Supplement] Use simple diagrams, measurements and calculations for reflection by plane mirrors
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 Light. 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 angle of incidence is measured between the incident ray and the: A. mirror surface B. reflected ray C. normal D. horizontal Answer: C
- A ray hits a plane mirror with an angle of incidence of 30 degrees. The angle of reflection is: A. 60 degrees B. 30 degrees C. 15 degrees D. 90 degrees Answer: B
- The image formed by a plane mirror is: A. real and larger B. virtual and the same size C. real and inverted D. virtual and smaller Answer: B
- A ray strikes a mirror at 20 degrees to the surface. The angle of reflection from the normal is: A. 20 degrees B. 40 degrees C. 70 degrees D. 90 degrees Answer: C
- An object is 5 cm in front of a plane mirror. Its image is: A. 5 cm in front B. 10 cm behind C. 5 cm behind D. on the mirror Answer: C
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 Light? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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Gbogbo ohun ti o nilo lati ṣe dara julọ ninu JAMB, WAEC ati NECO.
