MCQ
The key property of fluids is that:
- AThey offer very little esistance to shear stress.
- BTheir shape changes.
- CThey offer very large resistance to shear stress.
- DBoth (a) and (b).
✓
Answer
- Both (a) and (b).
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
A man standing on a road hold his umbrella at $30^° $ with the vertical to keep the rain away. He throws the umbrella and starts running at $10\, km/hr$. He finds that raindrops are hitting his head vertically, the speed of raindrops with respect to the road will be......... $km/hr$
→A car $P$ travelling at $20\,ms ^{-1}$ sounds its horn at a frequency of $400\,Hz$. Another car $Q$ is travelling behind the first car in the same direction with a velocity $40\,ms ^{-1}$. The frequency heard by the passenger of the car $Q$ is approximately $.......\,Hz$ [Take, velocity of sound $=360\,ms ^{-1}$ ]
→If the $r.m.s.$ velocity of a gas at a given temperature (Kelvin scale) is $300\, m/sec$. What will be the $r.m.s.$ velocity of a gas having twice the molecular weight and half the temperature on Kelvin scale ....... $m/sec$
→When a system is taken from a state $i$ to $f$ along the path $iaf$ (as shown in the figure). $Q = 50\, cal$ and $W = 20\, cal$ ; along path $ibf,$ $Q = 36\, cal.$
→$(i)$ What is $W$ along path $ibf$ ?
$(ii)$ If $W = 13$ cal for path $fi$, what is $Q$ for the path $fi$ ?
$(iii)$ Take $E_{int,i} = 10\,\, cal$ then what is $E_{int,f}$ ?
$A$ block of mass $M$ is placed on $a$ horizontal surface and it is tied with an inextensible string to $a$ block of mass, as shown in figure. A block of mass $m_0$ is also placed on $M$ The minimum value of $\mu$ between the block $M$ and $m_0$ (taking horizontal surface frictionless) for which all the three blocks move together, is
→The first overtone frequency of an open organ pipe is equal to the fundamental frequency of a closed organ pipe. If the length of the closed organ pipe is $20 \,cm$. The length of the open organ pipe is........$cm$.
→A stick has its bottom end attached to a wall by a pivot and is held up by a massless string attached to its other end. Which of the following scenarios has the smallest tension in the string ? (Length of stick is same in all scenarios)
An ideal heat engine exhausting heat at $77\,^oC$. To have a $30\%$ efficiency. It must take heat at...... $^oC$
→An engine moving away from a vertical cliff blows a horn at a frequency $f$. Its speed is $0.5 \%$ of the speed of sound in air. The frequency of the reflected sound received at the engine is ............ $f$
→Wax is coated on the inner wall of a capillary tube and the tube is then dipped in water. Then, compared to the unwaxed capillary, the angle of contact $\theta $ and the height $h$ upto which water rises change. These changes are
→