Question
Select wrong statement about pressure ..........
✓
Answer
(d)
Pressure is scalar as it is not added vectorially. Pressure is compressive in nature, it is same in all the directions at a point.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
One mole of an ideal gas at $300 \mathrm{~K}$ in thermal contact with surroundings expands isothermally from $1.0 \mathrm{~L}$ to $2.0 \mathrm{~L}$ against a constant pressure of $3.0 \mathrm{~atm}$. In this process, the change in entropy of surroundings $\left(\Delta S_{\text {surr }}\right)$ in $\mathrm{J} \mathrm{K}^{-1}$ is $(1 \mathrm{~L} \mathrm{~atm}=101.3 \mathrm{~J})$
→Half angular width of the central maxima in the fraunhaufer diffraction due to slit width $\frac{{1200}}{{\sqrt 2 }}\ \mu m $ is $45^o$. Then wavelength of the light is......$\mu m $
→An object is placed $0.40 \,m$ from one of the two lenses $L_1$ and $L_2$ of focal lengths $0.20 \,m$ and $0.10 \,m$ respectively, as depicted in the figure. The separation between the lenses is $0.30 \,m$.The final image formed by these two lenses system is at
→The activity of a radioactive sample is measured as $9750$ counts per minute at $t = 0$ and as $975$ counts per minute at $t = 5$ minutes. The decay constant is approximately ............ per minute
→Magnetic fleld changing at the rate of $4\,T/sec$ in a circular region of $5\, cm$ radius. The value of induced electric field at a point $'P'$, which is $10\, cm$ distance away from the centre $'O'$ of region is .....$V/m$
→We wish to make a microscope with the help of two positive lenses both with a focal length of $20\, mm$ each and the object is positioned $25\, mm$ from the objective lens. How far apart the lenses should be so that the final image is formed at infinity?......$mm$
→A $2\,\mu F$ capacitor is charged to $100$ $volt$ and then its plates are connected by a conducting wire. The heat produced is........$J$
→Two equal masses ${m_1}$ and ${m_2}$ moving along the same straight line with velocities $+ 3 \,m/s$ and $-5\, m/s$ respectively collide elastically. Their velocities after the collision will be respectively
→What is the magnitude of a point charge due to which the electric field $30\,cm$ away has the magnitude $2\,newton/coulomb$ $[1/4\pi {\varepsilon _0} = 9 \times {10^9}\,N{m^2}/{C^2}]$
→$Assertion$ : Mountain roads rarely go straight up the slope.
$Reason$ : Slope of mountains are large, therefore more chances of vehicle to slip from roads
→$Reason$ : Slope of mountains are large, therefore more chances of vehicle to slip from roads