MCQ
Which of the following pairs is wrong
- APressure-Baromter
- ✓Relative density-Pyrometer
- CTemperature-Thermometer
- DEarthquake-SeismographDimensions
✓
Answer
Correct option: B.
Relative density-Pyrometer
b
(b) Pyrometer is used for measurement of temperature.
(b) Pyrometer is used for measurement of temperature.
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
The portion $AB$ of the indicator diagram representing the state of matter denotes
→The resistance of a wire is ${10^{ - 6}}\,\Omega $ per meter. It is bend in the form of a circle of diameter $2\,m$. A wire of the same material is connected across its diameter. The total resistance across its diameter $AB$ will be
→A student connects a long air cored-coil of manganin wire to a $100\,V\, D.C.$ supply and records a current of $25\,amp$. When the same coil is connected across $100\,V$, $50\,Hz\, a.c.$ the current reduces to $20\,A$, the reactance of the coil is....$\Omega $
→The transverse displacement of a string (clamped at its both ends) is given by
→$y(x,t)\, = \,0.6\,\sin \,\left( {\frac{{2\pi }}{3}x} \right)\,\cos \,(120\,\pi t)$
where $x$ and $y$ are in $metre$ and $t$ in $second$ . The length of the string is $1.5\,m$ and its mass is $3.0\times 10^{-2}\,kg$ the tension in the string will be .... $N$
A light ray enters a solid glass sphere of refractive index $\mu=\sqrt{3}$ at an angle of incidence $60^{\circ}$. The ray is both reflected and refracted at the farther surface of the sphere. The angle (in degrees) between the reflected and refracted rays at this surface is......
→A man weighing $60\ kg$ stands on the horizontal platform of a spring balance. The platform starts executing simple harmonic motion of amplitude $0.1\ m$ and frequency $\frac{2}{\pi } Hz$. Which of the following staements is correct
→A $60 \,kg$ weight is dragged on a horizontal surface by a rope upto $ 2$ metres. If coefficient of friction is $\mu = 0.5$, the angle of rope with the surface is $60^°$ and $g = 9.8\,m/{\sec ^2}$, then work done is ........ $joules$
→With increase in frequency of an $a.c.$ supply, the impedance of an $L C R$ series circuit
→The mass of the earth is $6.00 \times {10^{24}}\,kg$ and that of the moon is $7.40 \times {10^{22}}\,kg$. The constant of gravitation $G = 6.67 \times {10^{ - 11}}\,N - {m^2}/k{g^2}$. The potential energy of the system is $ - 7.79 \times {10^{28}}\,joules$. The mean distance between the earth and moon is
→$Assertion :$ The total translational kinetic energy of all the molecules of a given mass of an ideal gas is $1.5$ times the product of its pressure and its volume.
$Reason :$ The molecules of a gas collide with each other and the velocities of the molecules change due to the collision.
→$Reason :$ The molecules of a gas collide with each other and the velocities of the molecules change due to the collision.