MCQ
Which of the following is dimensionally incorrect?
- ✓$u^2=2 a(g t-1)$
- B$s-u t=\frac{1}{2} a t^2$
- C$u=v-a t$
- D$v^2-u^2=2 a s$
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Statement $I$ : A uniform wire of resistance $80\,\Omega$ is cut into four equal parts. These parts are now connected in parallel. The equivalent resistance of the combination will be $5\,\Omega$.
Statement $II :$ Two resistance $2\,R$ and $3\,R$ are connected in parallel in a electric circuit. The value of thermal energy developed in $3\,R$ and $2\,R$ will be in the ratio $3:2.$
In the light of the above statements, choose the most appropriate answer from the options given below
If the whole set up is immersed in water without disturbing the object and the screen positions, what will one observe on the screen?
