MCQ
The specific heat of isothermal process is
- A$0$
- ✓$\infty $
- C$\frac{3}{2}\,R$
- D$\frac{5}{2}\,R$
✓
Answer
Correct option: B.
$\infty $
b
Given the process is isothermal which means it's temperature won't increase.
Given the process is isothermal which means it's temperature won't increase.
$C _p=\frac{\Delta Q }{ n \Delta T }$
Therefore specific heat will be infinity, as it is defined as heat supplied per unit increase in 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
An oxide coated filament is useful in vacuum tubes because essentially
For designing a voltmeter of range $50\,V$ and an ammeter of range $10\,mA$ using a galvanometer which has a coil of resistance $54\,\Omega$ showing a full scale deflection for $1\,mA$ as in figure.
→$(A)$ for voltmeter $R \approx 50\,k\Omega$
$(B)$ for ammeter $r \approx 0.2\,\Omega$
$(C)$ for ammeter $r \approx 6\,\Omega$
$(D)$ for voltmeter $R \approx 5\,k \Omega$
$(E)$ for voltmeter $R \approx 500 \Omega$
Choose the correct answer from the options given below
Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
→Assertion $A$: The potential ( $V$ ) at any axial point, at $2 \mathrm{~m}$ distance ( $r$ ) from the centre of the dipole of dipole moment vector $\vec{P}$ of magnitude, $4 \times 10^{-6} \mathrm{C} \mathrm{m}$, is $\pm 9 \times 10^3 \mathrm{~V}$.
(Take $\frac{1}{4 \pi \epsilon_0}=9 \times 10^9 \mathrm{Sl}$ units)
Reason $R$: $V= \pm \frac{2 P}{4 \pi \epsilon_0 r^2}$, where $r$ is the distance of any axial point, situated at $2 \mathrm{~m}$ from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below:
Consider the following statements :
A. The junction area of solar cell is made very narrow compared to a photo diode.
B. Solar cells are not connected with any external bias.
C. LED is made of lightly doped p-n junction.
D. Increase of forward current results in continuous increase of LED light intensity.
E. LEDs have to be connected in forward bias for emission of light.
A. The junction area of solar cell is made very narrow compared to a photo diode.
B. Solar cells are not connected with any external bias.
C. LED is made of lightly doped p-n junction.
D. Increase of forward current results in continuous increase of LED light intensity.
E. LEDs have to be connected in forward bias for emission of light.
If a $30\, V$, $90\, W$ bulb is to be worked on a $120\, V$ line, a resistance of how many ohms should be connected in series with the bulb ............... $ohm$
→A submarine experiences a pressure of $5.05\times 10^6\,Pa$ at a depth of $d_1$ in a sea. When it goes further to a depth of $d_2,$ it experiences a pressure of $8.08\times 10^6\,Pa.$ Then $d_2 -d_1$ is approximately ........ $m$ (density of water $= 10^3\,kg/m^3$ and acceleration due to gravity $= 10\,ms^{-2}$ )
→In materials like aluminium and copper, the correct order of magnitude of various elastic modulii is
The ends of a rope are held by two men who pulls on it with equal and opposite forces of magnitude $F$ each. Then the tension in the rope is
→A long straight wire carries a current along the $x$-axis. Consider the points $A(0, 1, 0), B(0, 1, 1), C(1, 0, 1)$ and $D(1, 1, 1)$. Which of the following pairs of points will have magnetic fields of the same magnitude?
→When light is incident on a medium at angle $i$ and refracted into a second medium at an angale $r,$ the graph of $\sin i$ vs $\sin r$ is as shown in the graph. From this, one can conclude that is as shown in the graph. From this, one can conclude that :-
→$(a)$ Velocity of light in the second medium is $1.73$ times the velocity of light in the $I$ medium
$(b)$ Velocity of light in the $I$ medium is $1.73$ times the velocity in the $II$ medium
$(c)$ The critical angle for the two media is given by $\sin \,{i_c}\, = \,\frac{1}{{\sqrt 3 }}$
$(d)$ $\sin \,{i_c}\, = \,\frac{1}{2}$