MCQ
A standing wave having $3$ nodes and $2$ antinodes is formed between two atoms having a distance $1.21\;\mathring A$ between them. The wavelength of the standing wave is .... $\mathop A\limits^o $
- ✓$1.21$
- B$2.42 $
- C$6.05$
- D$3.63 $
✓
Answer
Correct option: A.
$1.21$
a
(a) $\lambda = 1.21{Å}$
(a) $\lambda = 1.21{Å}$
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
Inside a closed furnace held at a temperature of $400\,\, K,$ we have a black body. A hole of area $10\,\, cm^2$ is opened in the furnace so that sunlight starts falling on black body. The intensity of sunlight is $2000\, W/m^2.$ In the steady state
→A stone tied to a string is rotated in a circle. If the string is cut, the stone flies away from the circle because
The linear mass density $(\lambda)$ of a rod of length $L$ kept along $x$-axis varies as $\lambda=\alpha+\beta x$; where $\alpha$ and $\beta$ are positive constants. The centre of mass of the rod is at ..........
→$10 \,\,gm$ of ice at $0^o C$ is kept in a calorimeter of water equivalent $10 \,\,gm$. ....... $cal$ heat should be supplied to the apparatus to evaporate the water thus formed? (Neglect loss of heat)
→Two satellites $A$ and $B$ revolve round the same planet in coplanar circular orbits lying in the same plane. Their periods of revolutions are $1\, h$ and $8\, h,$ respectively. The radius of the orbit of $A$ is $10^{4}\; km$. The speed of $B$ is relative to $A$. When they are closed in $k m / h$ is
→An organ pipe is closed at one end has fundamental frequency of $1500 Hz$. The maximum number of overtones generated by this pipe which a normal person can hear is :
→A strange cat with a mass $m_c$ is sitting at rest on the left plank of a pair of identical planks. Each plank has mass $m_s$ and they rest on frictionless ice. Suddenly, the cat leaps to the right plank, traveling with a horizontal speed $v_{cg}$ measured with respect to the ground. The instant the cat reaches the right plank, it turns around and leaps back to the left plank. The horizontal component of the cat’s speed is again $v_{cg}$ measured with respect to the ground. The final speed of right plank in terms of the masses of the cat and planks and the cat’s leaping speed is (The cat remains on the left plank after its return).
→The driver of a car travelling at velocity $v$ suddenly see a broad wall in front of him at a distance $d$. He should
→A rifle bullet loses $1/20th$ of its velocity in passing through a plank. The least number of such planks required just to stop the bullet is
→A wire of length $l$ and mass $m$ is bent in the form of a rectangle $ABCD$ with $(AB/BC) = 2.$ The moment of inertia of this wire about the side $BC$ is
→