Question
The angle of dip at a place is 37^ and the vertical component of the earth's magnetic field is 6 10^ -5 ~T . The earth's magnetic field at this place is ( 37^ = 3 4 )
BITSAT
Physics
Magnetic Properties of Matter
2021
BITSAT 2021
BITSAT Physics Question (2021) — Solution
Options
- A. 7 10^ -5 ~T
- B. 6 10^ -5 ~T
- C. 5 10^ -5 ~T
- D. 10^ -4 ~T
Answer
D. 10^ -4 ~T
Step-by-step solution
= V H = 3 4 [ 37^ = 3 4 ] V = 3 4 H V =6 10^ -5 ~T H = 4 3 6 10^ -5 ~T =8 10^ -5 ~T B _ total = V ^ 2 + H ^ 2 = (36+64) 10^ -5 =10 10^ -5 =10^ -4 ~T .
Related: Physics — Magnetic Properties of Matter · All PYQ Banks