The mantle extends to a depth of about:
A3,900 km
B4,900 km
C2,900 km
D1,900 km
Answer & Solution
Correct answer: C. 2,900 km
1. The mantle begins below the crust.
2. It ends where the core begins.
3. That boundary lies at 2,900 km.
4. So the answer is 2,900 km.
_Source: NCERT Class 11 Geography, Ch 3 'Interior of the Earth'_