Modelová Otázka ID 3587 - 
Jaký bude vzájemný vztah dvou paprsků, jestliže druhý paprsek vznikne odrazem prvního paprsku od soustavy dvou navzájem kolmých rovinných zrcadel v rovině kolmé na tato zrcadla, přičemž se paprsek odrazí od jednoho zrcadla k druhému a poté putuje pryč?
Správná odpověď je: C
Při odrazu paprsku od dvou na sebe kolmých zrcadel dojde vždy, nehledě na úhel dopadu paprsku, k odrazu paprsku rovnoběžně s dopadajícím paprskem. Tato skutečnost vychází ze zákona odrazu, který říká, že úhel dopadu a úhel odrazu paprsku (v situaci, kdy odražený paprsek leží v rovině dopadu) jsou stejné. Součet obou úhlů dopadu s oběma úhly odrazu dá v této situaci vždy 180°.
| Cookie | Délka | Popis |
|---|---|---|
| _fbp | 3 months | Facebook sets this cookie to display advertisements when either on Facebook or on a digital platform powered by Facebook advertising after visiting the website. |
| _ga | 1 year 1 month 4 days | Google Analytics sets this cookie to calculate visitor, session and campaign data and track site usage for the site's analytics report. The cookie stores information anonymously and assigns a randomly generated number to recognise unique visitors. |
| _ga_* | 1 year 1 month 4 days | Google Analytics sets this cookie to store and count page views. |
| sbjs_current | session | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| sbjs_current_add | session | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| sbjs_first | session | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| sbjs_first_add | session | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| sbjs_migrations | session | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| sbjs_session | 1 hour | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| sbjs_udata | session | Sourcebuster sets this cookie to identify the source of a visit and stores user action information in cookies. This analytical and behavioural cookie is used to enhance the visitor experience on the website. |
| Cookie | Délka | Popis |
|---|---|---|
| lp_session_guest | 2 days | Description is currently not available. |
| uloha_switch | 1 day | Description is currently not available. |
