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Angle of dip at a place is 30^(@) . If...

Angle of dip at a place is `30^(@)` . If the vertical component of earth's magnetic field at that point is `7.5 xx 10^(-5)` T, then the total magnetic field of earth at the point will be .

A

`7.5 xx 10^(-5) T `

B

`1.5 xx 10^(-4) T`

C

`8.67 xx 10^(-5) T`

D

`1.5 xx 10^(-5) T `

Text Solution

Verified by Experts

The correct Answer is:
B
`B_(v) = B sin theta`
`B = (B_(v))/(sin theta) = (7 .5 xx 10 ^(-5))/(sin 30^(@)) = 2 xx 7.5 xx 10^(-5)`
` = 1.5 xx 10^(-4) T`
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