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If we study the vibration of a pipe open at both ends, then the following statement is not true:
A wave travelling in the positive x-direction having maximum displacement along y-direction as $1 \text{ m}$, wavelength $2\pi \text{ m}$ and frequency of $1/\pi \text{ Hz}$ is represented by
The equation of a simple harmonic wave is given by $y=3\sin\frac{\pi}{2}(50t-x)$ where $x$ and $y$ are in meters and $t$ is in seconds. The ratio of maximum particle velocity to the wave velocity is:
Two waves are represented by the equations $y_1=a\sin(\omega t+kx+0.57)\text{ m}$ and $y_2=a\cos(\omega t+kx)\text{ m}$, where $x$ is in metre and $t$ in second. The phase difference between them is:
A tuning fork of frequency $512 \text{ Hz}$ makes $4 \text{ beats/s}$ with the vibrating strings of a piano. The beat frequency decreases to $2 \text{ beats/s}$ when the tension in the piano strings is slightly increased. The frequency of the piano string before increasing the tension was:
A wave in a string has an amplitude of $2 \text{ cm}$. The wave travels in the +ve direction of x-axis with a speed of $128 \text{ ms}^{-1}$ and it is noted that $5$ complete waves fit in $4 \text{ m}$ length of the string. The equation describing the wave is:
A wave traveling in the +ve x-direction having maximum displacement along y-direction as $1 \text{ m}$, wavelength $2\pi \text{ m}$ and frequency of $1/\pi \text{ Hz}$, is represented by:
Each of the two strings of lengths $51.6 \text{ cm}$ and $49.1 \text{ cm}$ is tensioned separately by $20 \text{ N}$ of force. The mass per unit length of both strings is the same and equals $1 \text{ g/m}$. When both the strings vibrate simultaneously, the number of beats is:
In a guitar, two strings $A$ and $B$ made of same material are slightly out of tune and produce beats of frequency $6 \text{ Hz}$. When tension in $B$ is slightly decreased, the beat frequency increases to $7 \text{ Hz}$. If the frequency of $A$ is $530 \text{ Hz}$, the original frequency of $B$ will be:
The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is:
In the given nuclear reaction, the element $X$ is $^{22}_{11}\text{Na} \rightarrow X + e^+$
If a soap bubble expands, the pressure inside the bubble
As the temperature increases, the electrical resistance
Two resistors of resistance, $100\text{ }\Omega$ and $200\text{ }\Omega$ are connected in parallel in an electrical circuit. The ratio of the thermal energy developed in $100\text{ }\Omega$ to that in $200\text{ }\Omega$ in a given time is
The total energy of an electron in an atom in an orbit is $-3.4 \text{ eV}$. Its kinetic and potential energies are, respectively:
Which of the following acts as a circuit protecting device?
<p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">The work done to raise a mass m from the</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">surface of the earth to a height h, which is</p><p class="p1" style="font-width: normal; font-size: 10px; line-height: normal; font-family: Helvetica; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; color: rgb(20, 20, 19); white-space: normal;">equal to the radius of the earth, is:</p>
Two particles A and B are moving in uniform circular motion in concentric circles of radii $r_A$ and $r_B$ with speed $v_A$ and $v_B$ respectively. Their time period of rotation is the same. The ratio of angular speed of A to that of B will be :
Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes :
Two parallel infinite line charges with linear charge densities $+\lambda \text{ C/m}$ and $-\lambda \text{ C/m}$ are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?