MCQ
When a wire is compressed, the potential energy of its molecules:
- Adecreases
- ✓increases
- Cremain unchanged
- Dnot certain
✓
Answer
Correct option: B.
increases
B
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
A shell of mass $m$ moving with velocity $ v$ suddenly breaks into $2$ pieces. The part having mass $m/4$ remains stationary. The velocity of the other shell will be
→A rod of length $1.2\,m$ is clamped at the mid point and its fundamental frequency is $2\,MHz$ , then speed of wave inside the rod?
→Ball $A$ moving at $12\ m/s$ collides elastically with $B$ as shown. If both balls have the same mass, what is the final velocity of ball $A$ ? ................$m/s$
→The two components of angular momentum are ahead of the components of linear momentum
A man standing on a road hold his umbrella at $30^° $ with the vertical to keep the rain away. He throws the umbrella and starts running at $10\, km/hr$. He finds that raindrops are hitting his head vertically, the speed of raindrops w.r.t. the moving man, will be
→A source of sound emits waves with frequency $f \,Hz$ and speed $V\, m/sec$. Two observers move away from this source in opposite directions each with a speed $0.2\, V$ relative to the source. The ratio of frequencies heard by the two observers will be
→A stone tied to a string of length $L$ is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position and has a speed $u$. The magnitude of the change in its velocity as it reaches a position where the string is horizontal is
→According to atomic hypothesis:
The radius of rotation of an object depends on:
In an isothermal expansion