Download App

Waves — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsWaves2 Marks
Question
Given below are some functions of x and t to represent the displacement of an elastic wave.$​​​​\text{y}=10\cos[(252-250)\pi\text{t}]\cos[(252+250)\pi\text{t}]$
✓

Answer

Beats involve $(\text{v}_1+\text{v}_2)$ and $(\text{v}_1-\text{v}_2)$ so beats can be represented by$\text{y}=10\cos[(252-250)\pi\text{t}]$ represents beat so (c) (iii).

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 "2 Marks Questions" from Waves→Waves — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Assume that each iron atom has a permanent magnetic moment equal to $2$ Bohr magnetons $(1$ bohr magneton equals $9.27 \times 10^{-24}A-m^2)$. The density of atoms in iron is $8.52 \times 10^{28} atoms/m^3$.
  1. Find the maximum magnetization $I$ in a long cylinder of iron.
  2. Find the maximum magnetic field $B$ on the axis inside the cylinder.
→
A child blows air at one end of a straw and slowly cuts pieces of the straw from the other end. What will be the outcome that will be observed?
→
Write a formula for the frequency of vibration of a stretched string in the case of a sonometer.
→
Why gases at high pressure and low temperature show large deviation from ideal gas behavior?
→
Calculate the r.m.s velocity of oxygen molecule at 27°C. Given that atomic weight of oxygen is 16.
→
What are the three Newtons Laws of Motion.
→
If $\text{y}=\frac{1}{\sqrt{\text{a}}}\sin\omega\text{t}-\frac{1}{\sqrt{\text{b}}}\cos\omega\text{t},$ find the amplitude of motion.
→
Calculate the torque on the square plate of the previous problem if it rotates about a diagonal with the same angular acceleration.
→
Prove that the work done by a thermodynamic system depend on the path on which the expansion take place.
→
The force acting on a particle moving along X -axis is $\mathrm{F}=-\mathrm{k}\left(\mathrm{x}-\mathrm{u}_0 \mathrm{t}\right)$ where k is a positive constant. An observer moving at a constant velocity $\mathrm{v}_0$, along the X -axis looks at the particle. What kind of motion does he find for the particle?
→