MCQ
If temperature of an object is $140°F$, then its temperature in centigrade is........ $^oC$
- A$105$
- B$32$
- C$140$
- ✓$60$
✓
Answer
Correct option: D.
$60$
d
(d) $\frac{C}{5} = \frac{{F - 32}}{9}$ $⇒$ $\frac{C}{5} = \frac{{140 - 32}}{9}$ $\Rightarrow$ $C = 60^\circ C$
(d) $\frac{C}{5} = \frac{{F - 32}}{9}$ $⇒$ $\frac{C}{5} = \frac{{140 - 32}}{9}$ $\Rightarrow$ $C = 60^\circ C$
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
Infinite numbers of blocks are placed on $a$ table edge as shown in the diagram. What is the minimum value of $L$ so that the blocks are just going to topple over the table ?
→A train moving at a speed of $220\, ms^{-1}$ towards a stationary object, emits a sound of frequency $1000\, Hz$. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is .... $ Hz$ (speed of sound in air is $330\, ms^{-1}$)
→A mass of $100\,g$ strikes the wall with speed $5\,m/s$ at an angle as shown in figure and it rebounds with the same speed. If the contact time is $2 \times {10^{ - 3}}\,\sec $, what is the force applied on the mass by the wall
→A drinking straw is dipped in a pan of water to depth d from the surface (see figure below). Now water is sucked into it up to an initial height $h_0$ and then left to oscillate. As a result, its height $y$ from the surface of the water varies periodically. Ignoring damping, the equation for $y$ is ( $g$ is the acceleration due to gravity):
→An experiment measures quantities $a, b$ and $c$, and quantity $X$ is calculated from $X=a b^{2} / c^{3}$. If the percentage error in $a$, $b$ and $c$ are $\pm 1 \%, \pm 3 \%$ and $\pm 2 \%$, respectively, then the percentage error in $X$ will be
→Suppose a tunnel is dug along a diameter of the earth. A particle is dropped from a point, a distance h directly above the tunnel. The motion of the particle as seen from the earth is:
- Simple harmonic.
- Parabolic.
- On a straight line.
- Periodic.
The ratio of total energy of all molecules of one mole $O_2$ to the total energy of all molecules of two moles of $He$ at the same temprature is
→An unknown frequency $x$ produces $8$ beats per seconds with a frequency of $250 Hz$ and $12$ beats with $270 Hz$ source, then $x$ is .... $Hz$
→A particle at the end of a spring executes simple harmonic motion with a period ${t_1}$, while the corresponding period for another spring is ${t_2}$. If the period of oscillation with the two springs in series is $T$, then
→The wavelength of maximum intensity of radiation emitted by a star is $289.8 \,nm$. The radiation intensity for the star is : (Stefan’s constant $5.67 \times {10^{ - 8}}W{m^{ - 2}}{K^{ - 4}}$, constant $b = 2898\mu mK)$
→