Apedia Logo Apedia
Join

Choose Language

Select your preferred reading language
🇬🇧
English
✔
🇮🇳
हिन्दी
✔
✕
Full View
Science & Tech
Astronomy
EN हिंदी
✕
UPSC Prelims 2024 Paper-I 📅 16 Jun, 2024

Consider the following statements:
Statement-I: Giant stars live much longer than dwarf stars.
Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

Which one of the following is correct in respect of the above statements?

A
Both Statement-I and Statement-II are correct and Statement-II explains Statement-I
B
Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I
C
Statement-I is correct, but Statement-II is incorrect
D
Statement-I is incorrect, but Statement-II is correct
Result Summary
Logo

APEDIA

UPSC Prelims
2024 • 16 Jun, 2024 • Paper-I
Consider the following statements:
Statement-I: Giant stars live much longer than dwarf stars.
Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

Which one of the following is correct in respect of the above statements?
Correct Answer
Statement-I is incorrect, but Statement-II is correct
Science & Tech: Astronomy.Concept: Stellar Lifespan.Details: Statement I is factually incorrect. Giant stars actually live much shorter lives (millions of years......
Ref/Book : UPSC Prelims 2024
Ref. Subject Science & Tech
Chapter -
Ref. Topic Astronomy
Pg. No -
💡 Analysis & Explanation
Science & Tech ▼
Astronomy.
Concept ▼
Stellar Lifespan.
Details ▼
Statement I is factually incorrect. Giant stars actually live much shorter lives (millions of years) compared to smaller dwarf stars (which can live for billions of years). Statement II is correct; massive stars have significantly higher gravitational pressure at their core, triggering an extremely fast and furious rate of nuclear fusion, burning through their fuel very rapidly.
← Prev
32 / 100
Next →