MCQ
If temperature increases, the surface tension of a liquid
- AIncreases
- ✓Decreases
- CRemains the same
- DIncreases then decreases
✓
Answer
Correct option: B.
Decreases
b
(b)
(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 body of mass $m$ moving with velocity $v$ makes a head-on collision with another body of mass $2 \,m$ which is initially at rest. The loss of kinetic energy of the colliding body (mass $m$) is
→A mass $\mathrm{m}$ is suspended from a spring of negligible mass and the system oscillates with a frequency $f_1$. The frequency of oscillations if a mass $9 \mathrm{~m}$ is suspended from the same spring is $f_2$. The value of $\frac{f_1}{f_{.2}}$ is_____________.
→In the absence of intermolecular force of attraction, the observed pressure $P$ will be
→Time period of revolution of a nearest satellite around a planet of radius $R$ is T. Period of revolution around another planet, whose radius is $3R$ but having same density is
→A liquid is contained in a vertical tube of semicircular cross-section The contact angle is zero. The forces of surface tension on the curved part and on the flat part are in ratio:
A glass capillary tube is of the shape of a truncated cone with an apex angle $\alpha$ so that its two ends have cross sections of different radii. When dipped in water vertically, water rises in it to a height $h$, where the radius of its cross section is $b$. If the surface tension of water is $S$, its density is $\rho$, and its contact angle with glass is $\theta$, the value of $h$ will be ( $g$ is the acceleration due to gravity)
→A particle moves in a region having a uniform magnetic field and a parallel, uniform electric field. At some instant, the velocity of the particle is perpendicular to the field direction. The path of the particle will be:
Which of the following is best close to an ideal black body
Two particles are projected from a tower in opposite directions horizontally with speed $10\,m / s$ each. At $t=1\,s$ match the following two columns.
→| Column $I$ | Column $II$ |
| $(A)$ Relative acceleration between two | $(p)$ $0$ SI unit |
| $(B)$ Relative velocity between two | $(q)$ $5$ SI unit |
| $(C)$ Horizontal distance between two | $(r)$ $10$ SI unit |
| $(D)$ Vertical distance between two | $(s)$ $20$ SI unit |
Consider two masses with $m_1 > m_2$ connected by a light inextensible string that passes over a pulley of radius $R$ and moment of inertia $I$ about its axis of rotation. The string does not slip on the pulley and the pulley turns without friction. The two masses are released from rest separated by a vertical distance $2 h$. When the two masses pass each other, the speed of the masses is proportional to
→