physics

Pokhran

Pokhran is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Pokhran rather than just read about it. In short: Pokhran (official spelling Pokaran) is a town and a municipality located 112 km east of Jaisalmer city in the Jaisalmer district of the Indian state of Rajasthan. It is situated in the Thar Desert region.

Key takeaways

Pokhran belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Pokhran to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Pokhran from memory before moving on to harder problems.

Reference excerpt

Pokhran (official spelling Pokaran) is a town and a municipality located 112 km east of Jaisalmer city in the Jaisalmer district of the Indian state of Rajasthan. It is situated in the Thar Desert region. Surrounded by rocks, sand and five salt ranges, the word "Pokaran" (पोकरण) means "place surrounded by five salt-ranges" in Rajasthani. The site for India's first and second underground nuclear weapon test is near Pokhran.

Geography Pokhran is located 112 km east of Jaisalmer city, 172 km northwest of Jodhpur and 225 km south of Bikaner by road. It lies on Jaisalmer to Jodhpur railway line. It is situated at 27.095°N 71.753°E / 27.095; 71.753 and has an average elevation of 233 metres (764 feet). It has an arid climate as it lies in the Thar Desert and receives little rain in the monsoon months July to September. Pokhran has an extreme climate. It has extremely hot and dry summers from April to June though monsoon months are also very hot. The temperature in the summer can reach 46°C during the day. The night temperature in the summer is more than 30°C. Pokhran has very cold winters with temperatures dropping to as low as 1°C.

History

Former rulers Seat of Chief of the Champawats, a sub-clan of Rathores of the state of Marwar-Jodhpur. Bhawani Singh of Pokhran (b. 1911) was the last jagirdar of Pokhran before Indian independence. He was Sessions Judge and was elected to the 1st Lok Sabha, the Lower house of Indian parliament from Barmer-Jalore constituency, after getting elected as an Independent candidate in the 1952 Indian general election.

Demographics According to 2011 Indian census, Pokhran had a population of 28,457 within Pokaran Municipal Board territory. Males constitute 55% of the population and females 45%. Pokhran has an average literacy rate of 56%, lower than the national average of 74.0%: male literacy is 68%, and female literacy is 41%. In Pokhran, 19% of the population is under 6 years of age.

Pokhran Test Range

The Pokhran Test Range (PTR) is a key component of India's nuclear programme which is located outside the Pokaran Municipal Board jurisdiction and is controlled by the Indian Army. The army base is located 26 km north-west of Pokhran town and 4 km north of Khetolai village. The army base was built by the Indian Army Corps of Engineers and is under the control of the Indian Army. It was built sometime before May 1974, when, following authorization given to the Bhabha Atomic Research Centre by then-Prime Minister Indira Gandhi, it hosted the detonation of India's first nuclear device.

Nuclear testings

The Ministry of External Affairs designated the test "Pokhran-I", but it is also known as "Smiling Buddha". It was India's first successful nuclear bomb test on 18 May 1974. The bomb was detonated on the PTR by the Indian Army under the supervision of several key generals. On 11 and 13 May 1998, the Indian Defence Research and Development Organisation (DRDO) and Atomic Energy Commission (AEC) conducted five further nuclear tests, dubbed "Pokhran-II", at the Pokhran range. Four AEC devices and, under the codename Shakti, a thermonuclear device were tested.

See also Pokaran railway station Pokaran Assembly constituency

References

Illustrations

Worked examples

Example 1 — a first encounter with Pokhran

Start with the simplest possible case. Write down what Pokhran claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Pokhran before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Pokhran ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Pokhran

In research: Pokhran appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Pokhran in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Pokhran is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cities and towns in Jaisalmer district, Controversies in India, Environmental disasters in India, so understanding it makes those chapters shorter.
In everyday life: Look for Pokhran outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Pokhran in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Pokhran means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Pokhran out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pokhran in simple terms?

Why does Pokhran matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Pokhran?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Pokhran.