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
    $v^2-u^2=2 a s$

Answer

Correct option: A.
$u^2=2 a(g t-1)$
a
(a)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A body of mass $ 2 \,kg$ is moving with a velocity $8\, m/s$ on a smooth surface. If it is to be brought to rest in $4 \,seconds$, then the force to be applied is ......... $N$
One mole of an ideal gas is taken from a to $b$ along two paths denoted by the solid and the dashed lines as shown in the graph below. If the work done along the solid line path is $\mathrm{w}_{\mathrm{s}}$ and that along the dotted line path is $w_d$, then the integer closest to the ratio $w_d / w_5$ is
A metal ball falls from a height of $32$ metre on a steel plate. If the coefficient of restitution is $0.5$, to what height will the ball rise after second bounce ............ $m$
The extension of a wire by the application of load is $3$ $mm.$ The extension in a wire of the same material and length but half the radius by the same load is..... $mm$
Velocity-time curve for a body projected vertically upwards is
A heave uniform rod Is hanging vertically form a foxed support. It is stretched by its won weight. The diameter of the rod is.
Two objects of mass $10\,kg$ and $20\,kg$ respectively are connected to the two ends of a rigid rod of length $10\,m$ with negligible mass. The distance of the center of mass of the system from the $10\,kg$ mass is :
A system has basic dimensions as density $[D]$, velocity $[V]$ and area $[A]$. The dimensional representation of force in this system is 
A body of mass $0.5 \,kg$ is projected under gravity with a speed of $98 \,m/s$ at an angle of ${30^o}$ with the horizontal. The change in momentum (in magnitude) of the body is ......... $N-s$
A spring balance $A$ reads $2 \,kg$ with a block of mass $m$ suspended from it. Another balance $B$ reads $3 \,kg$ when a beaker with a liquid is put on its pan. The two balances are now so arranged that the hanging mass $m$ is fully immersed inside the liquid in the beaker as shown in the figure given below.In this situation,