Download App

Thermodynamics — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsThermodynamics1 Mark
Question
What forbids the complete conversion of heat into work?
✓

Answer

Second law of thermodynamics, which says that 100% conversion of heat into work is impossible.

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

Explore more

More "1 Marks Question" from Thermodynamics→Thermodynamics — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

What is the nature of thermal changes in air, when a sound wave propagates through it?
→
The following example represent periodic motion :
A swimmer completing one (return) trip from one bank of a river to the other and back.
→
A photographic plate placed at a distance of 5cm from a weak point source is exposed for 3s. If the plate is kept at a distance of 10cm from the source, the time needed for the same exposure is:
  1. 3s
  2. 12s
  3. 24s
  4. 48s
→
Two sounds of very close frequencies, say 256Hz and 260Hz are produced simultaneously. What is the frequency of resultant sound and also write the number of beats heard in one second?
→
Given below are some functions of x and t to represent the displacement (transverse or longitudinal) of an elastic wave. State which of these represent (i) a travelling wave, (ii) a stationary wave or (iii) none at all:
$\text{y}=3\sin(5\text{x}-0.5\text{t})+4\cos(5\text{x}-0.5\text{t})$
→
A metal bar of length L, area of cross-section A, Young's modulus Y and coefficient of linear expansion $\alpha$ is clamped between two stout pillars. What is the force exerted by the bar when it is heated through t°C?
→
Will the acceleration of a wire be greater when the accelerator is pushed towards the floor or when the brake pedal is pressed hard?
→
The magnitude of linear momentum of a particle moving at a relativistic speed v is proportional to:

  1. $\text{v}$

  2. $\sqrt{1-\frac{\text{v}^2}{\text{c}^2}}$

  3. $1-\frac{\text{v}^2}{\text{c}^2}$

  4. None of these.

→
What are the units and dimensions of coefficient of friction?
→
Show graphically the temperature variation with time associated with a cooling hot body.
→