A magnetic needle makes an angle of $45$ with the thread from which it is suspended then ___________.

Dip at that place is

45

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Inclination at that place is

45

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Declination angle at that place is

45

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Both

(1)

and

(2)

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Solution

The correct option is D Both $(1)$ and $(2)$
Given, needle makes $45 °$ with thread. Thus $45 °$ with vertical and $45 °$ with horizontal . Now using dip, $θ$ ,relation.
$tan θ = \frac{V}{H}$
$⟹ tan θ = \frac{V}{H} = 1$
Since both components at equal inclination.
$⟹ θ = π / 4$

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Similar questions

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A magnetic needle makes an angle of 45 with the thread from which it is suspended then ___________.

The correct option is D Both (1) and (2)Given, needle makes 45° with thread. Thus 45° with vertical and 45° with horizontal . Now using dip,θ,relation.tanθ=VH⟹tanθ=VH=1Since both components at equal inclination.⟹θ=π/4

A magnetic needle makes an angle of $45$ with the thread from which it is suspended then ___________.

The correct option is D Both $(1)$ and $(2)$
Given, needle makes $45 °$ with thread. Thus $45 °$ with vertical and $45 °$ with horizontal . Now using dip, $θ$ ,relation.
$tan θ = \frac{V}{H}$
$⟹ tan θ = \frac{V}{H} = 1$
Since both components at equal inclination.
$⟹ θ = π / 4$