MCQ
A unit mass of solid converted to liquid at its melting point. Heat is required for this process is:
  • A
    Specific heat
  • B
    Latent heat of vaporization
  • C
    Latent heat of fusion
  • D
    External latent heat

Answer

  1. Latent heat of fusion

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If $c_V$ and $c_V$ denote the specific heats (per unit) mass of an ideal gas of molecular weight $M$, then 

where $R$ is the molar gas constant.

Two balls are projected from the same point simultaneously.First ball is projected vertically upwards and the second ball at an angle of projection $60^o$ to the ground level. Both the balls reach the ground simultaneously. The ratio of their velocities are
The electric field and the electric potential at a point are E and V respectively.
  1. If E = 0, V must be zero.
  2. If V = 0, E must be zero.
  3. If $\text{E}\neq0,$ V cannot be zero.
  4. If $\text{V}\neq0,$ E cannot be zero.
A tuning fork of known frequency $256\,Hz$ makes $5$ beats per second with the vibrating string of a guitar. The beat frequency decreases to $2$ beats per second when the tension in the guitar string slightly increased. The frequency of the guitar string before increasing the tension was ..... $Hz$
The equation of a wave is $y = 2\sin \pi (0.5x - 200t)$, where $x$ and $y$ are expressed in $cm$ and $t$ in $sec.$ The wave velocity is  ...... $cm/sec$
A block $B$ is placed on block $A$. The mass of block $B$ is less than the mass of block $A$. Friction exists between the blocks, whereas the ground on which the block $A$ is placed is taken to be smooth. $A$ horizontal force $F$, increasing linearly with time begins to act on $B$. The acceleration ${a_A}$ and ${a_B}$ of blocks $A$ and $B$ respectively are plotted against $t$. The correctly plotted graph is
If vm is the velocity of sound in moist air, vd is the velocity of sound in dry air, under identical conditions of pressure and temperature
Three identical sphere, each of mass $M$ and radius $R$ are placed as shown in figure. Consider an axis $XX'$ which is touching to two sphere and passing through diameter of third shell. Moment of inertia of the system consisting of these three sphere about $XX'$ axis is
A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that,
A soap bubble ( surface tension $= T$) is charged to a maximum surface density of charge $ = \sigma $. When it is just going to burst. Its radius $R$ is given by