PHYSICS CH -1 { LIGHT –REFLECTION AND REFRACTION} - PowerPoint Presentation

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PHYSICS CH -1 { LIGHT –REFLECTION AND REFRACTION}

EVERYONE WELCOME HERE IN THE NEW CLASS.

IN THIS CLASS WE ALL ARE GOING TO STUDY A NEW CHAPTER OF PHYSICS THAT IS LIGHT. SO LET US START IT

LIGHTKYA HOTI H YE LIGHT ?

LIGHT VO HI HOTI H JO HAME SAB KUCH DIKHATI H. EXAMPLE SE SAMAJHTE H.

M EK ROOM M GAYA, JAHAN PR BAHUT ANDHERA THA, BILKUL LIGHT NHI THI.

EK DUM DARK ROOM AUR US KAMRE M DEVENDRA BETHA THA.

THEEK H TO AB BATAO, KI MEIN DEVENDRA KO DEKH PAUNGA KYA ?

YA DEVENDRA MUJHE DEKH PAYEGA KYA ? SOCHO.

JYADA DIMAAG MT LAGAO M BATATA HUN, NHI DEKH PAYEGA KOI BHI KISI KO BHI.

AB US HI KAMRE M MAINE MERE PHONE KI TORCH ON KARI AUR US KAMRE M SARI CHEEZ DIKHNE LAG GAYI.

ISKA KYA MTLB HUA ? ISKA MTLB YE HUA KI LIGHT HI HAME SAB KUCH DIKHATI H.

AB TRY KARNA HO TO RAAT KO LIGHT BAND KARKE EK KAMRE M PACK HO JANA KUCH BHI NHI DIKHEGA JAB TAK KISI BHI CHEEZ SE LIGHT NHI AAYEGI.

AGAR DIKHE TO COMMENT KARNA.

LIGHTAB LIGHT KI DEFINATION KYA HUI LIGHT KI DEFINATION HUI KI :-

LIGHT BHI FORM OF ENERGY H JAISE KI SOUND HOTI H AB YAAD KARO SOUND SENSATION OH HEARING YANI KI SUNNE KI SHAKTI DETA THA AUR LIGHT DEKHNE KI SHAKTI DETI H.

TO IS DEFINATION KA YE MTLB HUA KI LIGHT EK ENERGY KI FORM H JO DEKHNE KI SHAKTI DETI H.

LIGHT IS A FORM OF ENERGY THAT GIVES SENSATION OF SIGHT.

PROPERTIES OF LIGHTAB SCIENCE H TO HAR CHEEZ KI KUCH NA KUCH PROPERTIES HOGI HI.JAISE TUMHARI BHI PROPERTIES HOTI HPREETI KI NARAJ HONA.YASMIN KI SHEKHI JHADNA.

KITTU KI BAATE KARNA.

DEVENDRA KI BAKVAS KARNA.

RAMDEV KI GUNDAGIRDI KARNA.

TANMAY KI BATA NHI SAKTA.

AUR MERI PROPERTY SMART HONA AUR AGAR TUMHE KUCH ALAG LAGE TO BATANA. COMMENT KARKE.TO AB AISE HI LIGHT KI BHI PROPERTIES HOTI H.

PROPERTIES OF LIGHTPEHLI PROPERTY YE H KI LIGHT IS A NON MECHANICAL WAVE.

{ PICHLE SAAL YE SAMJHAYA THA MAINE MECHANICAL OR NON MECHANICAL WAVE KYA HOTI H BHUL GAYE TO VAPAS YAAD KR LO KI MECHANICAL WAVE VO HOTI H JINHE PROPOGATION KE LIYE KISI MEDIUM KI REQUIREMENT HOTI H. AUR NON MECHANICAL KO MEDIUM KI REQUIREMENT NHI HOTI H} AGAR AISE SAMAJH NHI AAYA TO COMMENT KARNA M VAHI YAAD KARA DUNGA.

LIGHT EK ELECTROMAGNETIC WAVE HOTI H.

{ ELECTROMAGNETIC WAVE KA MTLB YE

HUA KI YE VO WAVE H JO ELECTRIC FIELD AUR MAGNETIC FIELD M HONE VALE VIBRATIONS SE PRODUCE HOTI H.) ISKE DEEP M MT JANA BAS ISKA NAAM YAAD RAKHNA.AUR EK TRANSVERSAL WAVE BHI HOTI H LIGHT.AUR YE STRAIGHT LINE M TRAVEL KARTI H.

AUR AAKHRI M LIGHT KI SPEED YAAD RAKHNI H 3 ×

. APPROX

OK TO AAJ BAS ITNA HI PADHO KL AAGE KA BATATA HUN PURA PADHNA HAR EK CHEEZ AGAR NHI SAMAJH AAYE KUCH BHI TO COMMENT M BATANA.

PHYSICS CH -1 { LIGHT –REFLECTION AND REFRACTION}

OK, SO TODAY WE WILL MOVE TOWARDS A NEW TOPIC.

THE NAME OF THE TOPIC IS

REFLECTION OF LIGHT.

KAHIN BHI JANE SE PEHLE EK CHEEZ DEKH LO YE M BATANA BHUL GAYA THA.LUMINIOUS AUR NON LUMINIOUS OBJECTObjects that emit light on their own are called luminous objects. Best examples of luminous objects are the sun, stars, light bulb etc

.

Objects that do not reflect light are known as non luminous objects. Examples of non luminous objects are wood, plastics, metals etc.

REFLECTION OF LIGHTAB EK CHEEZ YAAD KARO KI LIGHT KI BHI WAVE HOTI H AB WAVE H TO ISME BAHUT SARI RAYS HOGI. HENA.TO VO RAYS JAB KISI CHEEZ YANI KI SURFACE SE TAKRATI H TO VO VAPAS BOUNCE KARTI H. TO IS RAYS KE BOUNCE BACK HONE KO HI REFLECTION OF LIGHT KEHTE H.

KYONKI LIGHT RAYS SURFACE PR TAKRANE KE BAAD REFLECT HI TO HUI. ISLIYE USE REFLECTION KAHA H. OK

THEEK H TO AB ISKI DEFINATION YAAD RAKHO KI BHAI :-

REFLECTION OF LIGHT IS SAID TO BE DONE WHEN A LIGHT RAY STRIKES ON AN OBJECT AND BOUNCE BACK FROM THE SURFACE, THIS BOUNCE BACK OF LIGHT RAY FROM A SURFACE IS KNOWN AS REFLECTION OF LIGHT.

INCIDENT RAY :- VO RAY JO REFLECTING SURFACE PR GIR RAHI H OBJECT SE NIKAL KR.REFLECTED RAY

:-

VO RAY JO RELECT HONE KE BAAD HUMAN EYE PR JATI H YANI JO RAY BOUNCE BACK HOTI H.

NORMAL

:-

YE RAY HOTI H REFLECTING SURFACE KE PERPENDICULAR.POINT OF INCIDENCE:- VO POINT JAHAN PR INCIDENT RAY AAKAR TAKRATI H USE POINT OF INCIDENCE KEHTE H.

ANGLE OF INCIDENCE:

-

THE ANGLE MADE BY INCIDENT RAY AND NORMAL RAY AT POINT OF INCIDENCE.

ANGLE OF REFLECTION

:-

THE

ANGLE MADE BY

REFLECTED RAY

AND NORMAL RAY AT POINT OF INCIDENCE.

OBJECT

;-

KOI BHI CHEEZ JO YA TO KHUD LIGHT DETI H YA DUSRE OBJECT KI LIGHT SE REFLECT HONE KE BAAD DIKHTI H, USE OBJECT KEHTE H.

IMAGE:- IT IS FORMED BY INTERACTION OF REFLECTED RAYS.

IMPORTANT TERMS RELATED TO REFLECTION

IMPORTANT TERMS RELATED TO REFLECTION