A block of \( 1 \mathrm{~kg} \) is stopped against a wall by applying a force \( F \) perpendicu...

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A block of \( 1 \mathrm{~kg} \) is stopped against a wall by applying a force \( F \) perpendicular to the wall. If \( \mu=0.2 \) then minimum value of \( F \) will be
[MP PMT 2003]
(a) \( 980 \mathrm{~N} \)
(b) \( 49 N \)
(c) \( 98 \mathrm{~N} \)
(d) \( 490 \mathrm{~N} \)
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