MCQ
If $L = 2.331\,cm,\;B = 2.1\,cm$, then $L + B = $
  • A
    $4.431 \,cm$
  • B
    $4.43 \,cm$
  • $4.4 \,cm$
  • D
    $4 \,cm$

Answer

Correct option: C.
$4.4 \,cm$
c
(c) Given, $L = 2.331\;cm$

$ = 2.33$ (correct upto two decimal places)

and $B = 2.1\;cm$$ = 2.10\;cm$

$\therefore \;L + B = 2.33 + 2.10 = 4.43\;cm$.$ = 4.4\,cm$

Since minimum significant figure is $2$.

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

An air bubble of radius $r$ rises steadily through a liquid of density $\rho $ with velocity $v$ . The coefficient of viscosity of liquid is
Which of the following practical units of length is not correct?
A ball of mass $( m )=0.5 \ kg$ is attached to the end of a string having length $(L)$ $=0.5 m$. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is $324 \ N$. The maximum possible value of angular velocity of ball (in radian/s) is
A particle moves on the $X-$axis according to the equation $\text{x}=\text{x}_0\sin^2\omega\text{t.}$ The motion is simple harmonic.
Two particles of mass $5\, kg$ and $10\, kg$ respectively are attached to the two ends of a rigid rod of length $1\, m$ with negligible mass. The centre of mass of the system from the $5\, kg$ particle is nearly at a distance of $..........\, cm$
A liquid mixture of volume $V$, has two liquids as its ingredients with densities $\alpha$ and $\beta$. If density of the mixture is $\sigma$, then mass of the first liquid in mixture is ............
$N _{2}$ gas is heated from $300\, K$ temperature to $600\, K$ through an isobaric process. Then find the change in entropy of the gas. $( n =1 mole )$ (in $J/K$)
Find the velocity of the hanging block if the velocities of the free ends of the rope are as indicated in the figure.
The height $y$ and the distance $x$ along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by $y = (8t - 5{t^2})$ meter and $x = 6t\, meter$, where $t$ is in second. the angle with the horizontal at which the projectile was projected is
The magnitude of gravitational potential energy of the moon$-$earth system is $U$ with zero potential energy at infinite separation. The kinetic energy of the moon with respect to the earth is $K$.