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$6.$ In a uniform circular motion, if the radius decreases to half of it's initial value. Angular velocity becomes a) times b) $4$ times $c\right)$ $3$ times d) $3$ times $7.$ $A$ A fan is rotating with $10$ rpm which has $lm$ length petal from the centre. The linear velocity of a fly on its tip is a) $\dfrac {\pi } {3}m/min$ b) $\dfrac {\pi } {3}ms^{-1}$ $\dfrac {\pi } {30}rads^{-1}$ d) $\pi $ rad $f>'$

3.How many times an atom of sulphur is heavier than an atom of carbon? $0$ (atomic mass of sulphur $=32g\right)$ a) $32$ times b) $12$ times $mcs$ $C\right)$ $8/3$ times $S$ d) $\right)$ $1232$ times

Over the past $30$ games between team $A$ and team $B,$ team $A$ has won $14$ times, team $B$ Bhas won $11$ times and the game has ended in a draw $5$ times. If these two teams $S$ played $9$ games this season, What is the that team $A$ would win $5$ games, probability team Bwould win $3$ games, and the remaining $8$ $game$ would be a draw?

$1-$ Fill in the $b|ank5:$ $a\right)$ The number of times 'E' comes in ELEPHANT $15=$ . b) 1 tens and 2 ones $\pi $ $E\right)$ .comes between $11$ and $13$ $\square \right)$ Write in $Mord55$ $89\pi $ $--→.-$ $e\right)$ The number letters in word MATHEMATICS is ........ f) $5=5\pi $ g) .. comes after $30$ h) $65=$ . tens and 6 ones. $1\right)$ $542\pi $ . j) .... comes before $100$

$4.$ A prticle moves in a circle of radius $0.5m$ with an angular speed of $4rad$ $S^{-1}$ $.$ It's linear speed is a) $20ms^{-1}$ b) $2ms^{-1}$ c) $8ms^{-1}$ d) $0.2ms^{-1}$ 5. Two bodies are moving along a circular path with different speeds $2ms^{-1}and$ $4ms^{-1}$ Ratio of their angular speed is $a\right)2:1$ b) $1:2$ c) $1:1$ $d\right)$ $2:3$ 6. In a uniform circular motion, if the radius decreases to half of it's initial value. Angular velocity becomes a) 2 times b) 4 times c) $3tim$ times $\square $ $5tim$ times