A small block of mass of \( 0.1 \mathrm{~kg} \) lies on a fixed inclined plane PQ which makes an...

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A small block of mass of \( 0.1 \mathrm{~kg} \) lies on a fixed inclined plane PQ which makes an angle \( \theta \) with the horizontal. A horizontal force of \( 1 \mathrm{~N} \) acts on the block through its centre of mass as shown in the figure.
\( \mathrm{P} \) The block remains stationary if (take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )

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(A) \( \theta=45^{\circ} \)
- (B) \( \theta45^{\circ} \) and a frictional force acts on the block towards \( P \)
(C) \( \theta45^{\circ} \) and a frictional force acts on the block towards \( Q \)
- (D) \( \theta45^{\circ} \) and a frictional force acts on the block towards \( Q \)
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