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Two masses rest on smooth surface as shown in the figure. Force exerted by `P` on `Q` is.

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Two masses rest on smooth surface as shown in the figure. Force exerted by `P` on `Q` is.
image
A. `1.5N`
B. `1N`
C. `2N`
D. `3N`
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Correct Answer - B
Acceleration of the system,
`a=(F)/(m_(1)+m_(2))=(3)/((2+1))`
`=(3)/(3)=1ms^(-2)`
Force exerted by block `P` on block `Q` is
`1xx1=1N`
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