UPSC Physics Optional Notes

*🛡️Space Debris* ♟️Space Debris (also called space junk or orbital debris) refers to all man-made objects in space that are no longer useful but still orbit the Earth. *💎Main Sources* *♟️1. Defunct satellites –* Old satellites that no longer work. *♟️2. Rocket parts –* Stages or fragments left behind after launches. *♟️3. Collision fragments –* Pieces created when satellites or rockets collide. *♟️4. Mission-related objects –* Bolts, metal pieces, or tools left during missions. *💎Dangers* *♟️Damage to active satellites –* Debris can crash into working satellites. *♟️Risk to astronauts –* Even tiny fragments can harm the International Space Station (ISS). *♟️Kessler Syndrome –* A chain reaction where collisions create more debris, making space too dangerous. *💎Solutions* *♟️Graveyard orbit or re-entry –* Moving old satellites into a safer orbit or burning them up in Earth’s atmosphere. *♟️Active Debris Removal (ADR) –* Using nets, robotic arms, or lasers to clear junk. *♟️New space rules –* Agencies now design missions to reduce future debris. *♟️In Short,* space debris = old satellites + rocket parts + fragments that make space operations risky.

*🛡️Pacific Ocean* *💎Warm Currents:-* ♟️1. Kuroshio Current (Japan Current) ♟️2. North Equatorial Current ♟️3. South Equatorial Current ♟️4. East Australian Current ♟️5. Equatorial Counter Current ♟️6. Alaskan Current *💎Cold Currents:-* ♟️1. Oyashio Current ♟️2. California Current ♟️3. Peru Current (Humboldt Current) ♟️4. West Wind Drift (part of Antarctic Circumpolar Current).

*🛡️Arrival Of European companies in chronological order* *💎Trick:-* PD BD FS ♟️P = Portuguese (1498)    ♟️D = Dutch    ♟️B-BRITISH English) (1600) ♟️D = Dennis (1616)  ♟️F = French (1664) ♟️S = Swedish (1731 *Hit 👍❤️👌 To Appreciate our Consistent Efforts.*

*🛡️Ethics in Action: The Manjunath Shanmugam Story* ♟️ *Man of Integrity* ♟️Manjunath Shanmugam, a sales officer at Indian Oil Corporation (IOC), stood firm against corruption by exposing and preventing the sale of adulterated fuel. ♟️His courageous actions to shut down a corrupt petrol station in Lakhimpur Kheri, Uttar Pradesh ultimately led to his tragic murder. ♟️ *Legacy and Inspiration* ♟️His sacrifice has inspired students across India, including those from IIM, IIT, and other institutions, to fight against corruption and stand up for ethical governance. ♟️The students at IIM set up the Manjunath Shanmugam Trust, initially to fight for justice in his case, with the long-term vision of improving governance in public life. ♟️ *Ethical Takeaway* ♟️Integrity and courage in the face of adversity are core ethical values. ♟️The Manjunath Shanmugam Trust exemplifies how individual action can spark a broader societal movement toward accountability and transparency in governance.

*Q) वस्तुओं के मूल्य बढ़ने और मुद्रा का मूल्य गिरने की स्थिति क्या कहलाती है?* *Q) What is the condition called when prices rise and value of money falls?* *______________________________________* *(A) अपस्फीति / Deflation 🙏* *(B) मुद्रास्फीति / Inflation ❤️* *(C) मंदी / Recession 🥰* *(D) अवसाद / Depression 👍* *______________________________________* 👉 Give Your Right Answer

*✍️प्रमुख राष्ट्रीय उद्यान / Major National Parks* ================================= *✅जिम कॉर्बेट राष्ट्रीय उद्यान (Jim Corbett National Park)* ➤ राज्य: उत्तराखंड ➤ स्थापना वर्ष: 1936 ➤ प्रसिद्ध जीव: बंगाल टाइगर ➤ State: Uttarakhand ➤ Established: 1936 ➤ Famous Animal: Bengal Tiger *✅काजीरंगा राष्ट्रीय उद्यान (Kaziranga National Park)* ➤ राज्य: असम ➤ स्थापना वर्ष: 1905 ➤ प्रसिद्ध जीव: एक सींग वाला गैंडा ➤ State: Assam ➤ Established: 1905 ➤ Famous Animal: One-horned Rhinoceros *✅रणथंभौर राष्ट्रीय उद्यान (Ranthambore National Park)* ➤ राज्य: राजस्थान ➤ स्थापना वर्ष: 1980 ➤ प्रसिद्ध जीव: टाइगर ➤ State: Rajasthan ➤ Established: 1980 ➤ Famous Animal: Tiger *✅गिर राष्ट्रीय उद्यान (Gir National Park)* ➤ राज्य: गुजरात ➤ स्थापना वर्ष: 1965 ➤ प्रसिद्ध जीव: एशियाई शेर ➤ State: Gujarat ➤ Established: 1965 ➤ Famous Animal: Asiatic Lion *✅सुंदरबन राष्ट्रीय उद्यान (Sundarbans National Park)* ➤ राज्य: पश्चिम बंगाल ➤ स्थापना वर्ष: 1984 ➤ प्रसिद्ध जीव: रॉयल बंगाल टाइगर ➤ State: West Bengal ➤ Established: 1984 ➤ Famous Animal: Royal Bengal Tiger *✅कान्हा राष्ट्रीय उद्यान (Kanha National Park)* ➤ राज्य: मध्य प्रदेश ➤ स्थापना वर्ष: 1955 ➤ प्रसिद्ध जीव: बारहसिंगा ➤ State: Madhya Pradesh ➤ Established: 1955 ➤ Famous Animal: Barasingha Tap ❤️ if this helped you!

🛡️ *Banjara Culture* ♟️The Banjara community consists of various groups found throughout India, with a significant population in Telangana, Andhra Pradesh, and Karnataka. ♟️They have settled in permanent settlements called Tandas, abandoning their nomadic lifestyle. ♟️The Banjara people speak GorBoli, also known as Lambadi, which belongs to the Indo-Aryan group of languages and has no script. ♟️Teej is a festival celebrated by young unmarried Banjara girls in Shravanam (August), where they pray for a good groom. ♟️Fire dance and Chari are traditional dance forms of the Banjara people.

*🛡️Governor Vs Lt. Governor Powers* ♟️President is final decision-making authority in case of dispute between LG and cabinet of UT. ♟️In general, Governor of a state has to act solely on the aid and advice of the Council of Ministers, whereas, the LG does not need the approval of the Council of Ministers on every matter. ♟️Unlike Governor which has dual role to play i.e. Constitutional Head of the state as well as agent of the President, LG is not Constitutional head of the UT but only an agent of President. ♟️Chief Ministers of Delhi and Puducherry are appointed by the President and not by LG, whereas the Chief Ministers of states are appointed by the Governor. ♟️CM give resignation to LG and not to Presiden *Hit 👍🏻❤️👌🏻 To Appreciate Our Consistent Efforts*

*::::::::::PREAMBLE::::::::::* WE, THE PEOPLE OF INDIA, having solemnly resolved to constitute India into a SOVEREIGN SOCIALIST SECULAR DEMOCRATIC REPUBLIC[1] and to secure to all its citizens: JUSTICE, social, economic and political; LIBERTY of thought, expression, belief, faith and worship; EQUALITY of status and of opportunity; and to promote among them all FRATERNITY assuring the dignity of the individual and the [unity and integrity of the Nation[2]; IN OUR CONSTITUENT ASSEMBLY this twenty-sixth day of November, 1949, do HEREBY ADOPT, ENACT AND GIVE TO OURSELVES THIS CONSTITUTION.

*🛡️Comptroller and Auditor General of India (CAG)* ♟️The Comptroller and Auditor General is appointed by the President of India and can be removed from office only in the manner and on the grounds that a Judge of the Supreme Court is removed. ♟️The person appointed to this office should take an oath of office before the President or any other person appointed by the office of the President. ♟️The salary, service conditions, leaves of absence, pension and age of retirement are determined by the Parliament of India and specified in the Second Schedule such that the service conditions and salary will not be modified to the disadvantage of the incumbent during their tenure. ♟️The CAG is not eligible for any further office after the end of their tenure either in the Government of India or any State Government. ♟️The administrative expenses of the office of CAG, including salaries, allowances and pensions serving in that office are charged up on the Consolidated Fund of India.Thus they are not subjected to the vote of Parliament.

*भारत के Seven Sister राज्य* 🌄🇮🇳 *Trick:* ATM में मीना 😄🧠 *A =* असम 🌿 *T =* त्रिपुरा 🌴 *M =* मणिपुर 🌸 *में =* मेघालय 🌧️ *मी =* मिजोरम 🌄 *ना =* नागालैंड 🏞️ *आ =* अरुणाचल प्रदेश 🌅 *Trick अच्छी लगी हो तो 👍♥️ लाइक जरुर करें*

*🛡️Trick to remember DPSPs (Article 36–51)* *💎Mnemonic:-* SEE GAPS JUMP ♟️Social Order ♟️Education ♟️Equal pay for equal work ♟️Gram Sabha ♟️Agriculture & animal husbandry ♟️Panchayats ♟️Scientific temper ♟️Judiciary independence ♟️Uniform Civil Code ♟️Minorities promotion ♟️Provision of early childhood care *Hit 👍❤️👌 to Appreciate our Consistent Efforts.*

🛡️ *Swaran Singh Committee* ♟️In 1976, Congress Party set up the Sardar Swaran Singh Committee to make recommendations about fundamental duties, the need felt during the operation of the internal emergency (1975–1977). ♟️The committee recommended the inclusion of a separate chapter on fundamental duties in the Constitution. ♟️It stressed that the citizens should become conscious that in addition to the enjoyment of rights, they also have certain duties to perform as well. ♟️The Congress Government at Centre accepted these recommendations and enacted the 42nd Constitutional Amendment Act in 1976. ♟️This amendment added a new part, namely, Part IVA to the Constitution. This new part consists of only one Article, that is, Article 51A. ♟️Though Swaran Singh Committee suggested eight Fundamental Duties in the Constitution, the 42nd Constitutional Amendment Act (1976) included ten Fundamental Duties.

*🛡️Countries bordering Kazakhstan* *💎Trick:-* TRUCK ♟️T- Turkmenistan ♟️R- Russia ♟️U- Uzbekistan ♟️C- China ♟️K- Kyrgyzstan

*Q. Which quantum number determines the shape of an orbital?* *A. Principal quantum number 👍🏻* *B. Azimuthal quantum number ❤️* *C. Magnetic quantum number 🥰* *D. Spin quantum number 🙏🏻* *👉🏻 Give Your Right Answer ✅*

*🛡️Procedure Of The Court* ♟️The Supreme Court can, with the approval of the president, make rules for regulating generally the practice and procedure of the Court. ♟️The Constitutional cases or references made by the President under Article 143 are decided by a Bench consisting of at least five judges. ♟️All other cases are decided by single judges and division benches. ♟️The judgements are delivered by the open court. All judgements are by majority vote but if differing, then judges can give dissenting judgements or opinions.

*🛡️Comptroller and Auditor General of India (CAG)* ♟️The Comptroller and Auditor General is appointed by the President of India and can be removed from office only in the manner and on the grounds that a Judge of the Supreme Court is removed. ♟️The person appointed to this office should take an oath of office before the President or any other person appointed by the office of the President. ♟️The salary, service conditions, leaves of absence, pension and age of retirement are determined by the Parliament of India and specified in the Second Schedule such that the service conditions and salary will not be modified to the disadvantage of the incumbent during their tenure. ♟️The CAG is not eligible for any further office after the end of their tenure either in the Government of India or any State Government. ♟️The administrative expenses of the office of CAG, including salaries, allowances and pensions serving in that office are charged up on the Consolidated Fund of India.Thus they are not subjected to the vote of Parliament.

✔️  Key Differences Between FERA and FEMA ❤️ FERA ✔️FERA is an acronym for Foreign Exchange Regulation Act. ✔️It was passed by the Parliament of India in 1973. The act came into force on 1st January 1974. ✔️FERA Act was repealed by the Vajpayee government in 1998. ✔️It was enacted to regulate foreign exchange and payments in India. Its main objective was to conserve forex transactions. ✔️The rules and regulations of FERA on foreign exchange were conservative and restrictive. ✔️This act came into force when the forex position in the country was not good. ✔️Comparatively, FERA Act is lengthier as it has 81 sections. ✔️Under this act, the definition of the term ‘Authorized person’ was narrow. ✔️Under this act, the citizenship of an individual was the basis for determining his/her residential status. ✔️Under FERA, no provisions were made for IT. ✔️Violation of the provisions of FERA has been considered a criminal offence and the punishment for contravention was imprisonment. ✔️Violation of FERA was a non-compoundable offence i.e. the offence cannot be compromised. Moreover, the accused was not allowed any assistance from the lawyer. ✔️The appeals were sent to the Supreme Court. ✔️According to FERA, an individual should obtain permission from the RBI to carry out forex transactions. ❤️ FEMA ✔️FEMA is an acronym for Foreign Exchange Management Act. ✔️FEMA Act was passed by the Parliament of India in 1999 to replace the FERA. It came into force on 1st June 2000. ✔️FEMA is currently active in the country. ✔️It was enacted to remove the stringent regulations on foreign exchange and promote orderly management of foreign exchange and payments. Its main objective was to manage the forex transactions. ✔️The approach of FEMA Act toward foreign exchange is flexible. ✔️This act was introduced when the strict provisions of FERA were hampering the growth of the Indian economy. ✔️FEMA has 49 sections and is shorter than the FERA. ✔️Under this act, the definition of the term ‘Authorized person’ is broad and it has included the banks under it. ✔️Under this act, the basis for determining the residential status was that an individual should be residing in India for the past 6 months. ✔️Provisions on IT were introduced under the FEMA Act. ✔️Violation of the provisions of FEMA has been considered a civil offence and the punishment for contravention was a monetary penalty. If an individual fails to pay the penalty on time, he/she may be imprisoned. ✔️Violation of FEMA is a compoundable offence and the charges can be compromised or removed. FEMA provides the accused the right to obtain legal assistance from a lawyer. ✔️A special director and a special court were introduced under FEMA to address the appeals. ✔️Under FEMA, no such pre-approval or permission of RBI is required to carry out forex transactions.

🛡️ *Classification of Solar Flares* Solar flares are classified based on their peak brightness in X-ray wavelengths into five categories:- ♟️ *X-class* The most powerful flares, capable of causing significant radio blackouts and radiation storms. ♟️ *M-class* Medium-sized flares that can cause brief radio blackouts, mainly affecting polar regions. ♟️ *C-class* Minor flares with minimal impact on Earth. ♟️ *B-class* Weaker than C-class flares. ♟️ *A-class* The weakest flares, with negligible effects

Question:- The question below has two statements followed by two conclusions. Consider the two given statements as true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows the given statements. *Statements* 1. All Mumbaikar are Maharashtrian. 2. All Maharashtrians are Indian. *Conclusions* 1. Some Maharashtrian are Mumbaikar. 2. Some Indian are Mumbaikar. A) Only I😀 B) Only II👍 C) Both I and II🙏 D) Neither I nor II❤️ Give your Right Answer