A body is projected vertically upward with speed 10 ,m / s and ot… - Vidyadip

MCQ

A body is projected vertically upward with speed $10 \,m / s$ and other at same time with same speed in downward direction from the top of a tower. The magnitude of acceleration of first body w.r.t. second is ...... $m / s ^2$ $\left\{\right.$ take $\left.g=10 \,m / s ^2\right\}$

✓
$0$
B
$10$
C
$5$
D
$20$

✓

Answer

Correct option: A.

$0$

a
(a)

The acceleration of first body

$a_1=10 \,ms ^{-2}$

$a_2=10 \,ms ^{-2}$

$a_{ rel }=a_1-a_2=10 \,ms ^{-2}-10 \,ms ^{-2}=0$

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

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

If the length of a cylinder on heating increases by $2\%$, the area of its base will increase by ....... $\%$

The diameter of the eye-ball of a normal eye is about $2.5\, cm$. The power of the eye lens varies from

The resistance of the meter bridge $AB$ in given figure is $4\,\Omega $. With a cell of emf $\varepsilon \, = 0.5\,\,V$ and rheostat resistance $R_h = 2\,\Omega $ the null point is obtained at some point $J.$ When the cell is replaced by another one of emf $\varepsilon \, = {\varepsilon _2}$ the same null point $J$ is found for $R_h = 6\,\Omega .$ The $emf$ ${\varepsilon _2}$ is ................. $V$

An object is placed at a distance of $20 cm$ from a convex lens of focal length $10 cm$. The image is formed on the other side of the lens at a distance......$cm$

The length of a wire of a potentiometer is $100\, cm$, and the $emf$ of its standard cell is $E\,volt$. It is employed to measure the $e.m.f$ of a battery whose internal resistance is $0.5 \,\Omega$. If the balance point is obtained at $l = 30\, cm$ from the positive end, the $e.m.f.$ of the battery is

where $i$ is the current in the potentiometer

Find the reading of spring balance as shown in figure. Assume that mass $M$ is in equilibrium. All surfaces are smooth ....... $N$

The direction of magnetic lines of forces close to a straight conductor carrying current will be

In the following diagram the work done in moving a point charge from point $P$ to point $A$, $B$ and $C$ is respectively as $W_A$, $W_B$ and $W_C$ , then

In gold foil experiment number of deflected $\alpha -$ particles at angle $90^o$ is $63$ than number of $\alpha -$ particle deflected at $120^o$ is

For the $LCR$ circuit, shown here, the current is observed to lead the applied voltage. An additional capacitor $C '$ , when joined with the capacitor $C$ present in the circuit , makes the power factor of the circuit unity. The capacitor $C'$, must have been connected in