Recent questions tagged class11

$\lim\limits_{x\to 1}(1-x)\tan\large\frac{\pi x}{2}$=__________

asked Dec 20, 2013 by sreemathi.v

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When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems the resonance of acceleration is more when

asked Dec 10, 2013 by meena.p

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The phase constant in rad of a simple pendulum whose amplitude of oscillation is 2; initial displacement is 1, initial velocity is 4 units/sec, frequency in rad/sec is 6 is:

asked Dec 10, 2013 by meena.p

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The phase constant in radians of a simple pendulum having an initial displacement of 24 units and having an amplitude of .24 is

asked Dec 10, 2013 by meena.p

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The product of time period in seconds and frequency of oscillation in rad/sec of a simple pendulum of length $l$ suspended inside a rocket moving vertically with an acceleration 'a' just above the earth is:

asked Dec 10, 2013 by meena.p

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A simple pendulum is suspended inside a truck moving uniformly with a small acceleration of '3b'. Its mean position as an angle in radians with respect to the vertical is

asked Dec 10, 2013 by meena.p

1 answer

If the velocity of a spring mass system which starts from zero is given by $6 \sin(4t)$ then its amplitude of displacement and accelerations are

asked Dec 10, 2013 by meena.p

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If the acceleration of the mass of a spring mass system is equal to $2 \sin 5t,$ the resulting motion is

asked Dec 10, 2013 by meena.p

1 answer

The damped natural frequency is higher than natural frequency is a

asked Dec 9, 2013 by meena.p

1 answer

When four similar springs are connected in series to four non identical masses with three of the masses in between the three springs and the other at the end:

asked Dec 9, 2013 by meena.p

1 answer

When three springs are used to suspend a mass what happens to the natural frequency when compared to when each of the spring is used to suspend the same mass:

asked Dec 9, 2013 by meena.p

1 answer

A body has the following combinations of acceleration, position, velocity at one instant while the fourth parameter is its initial position. Which of the following combinations describes $SHM$:

asked Dec 9, 2013 by meena.p

1 answer

How many minimum observations of the acceleration (at various time instants) are required to quantify a simple harmonic motion (form the exact equation describing the displacement as a function of time):

asked Dec 9, 2013 by meena.p

1 answer

The motion of the sea waves when wind is blowing uniformly can be considered as:

asked Dec 9, 2013 by meena.p

1 answer

The mean position and one extreme position of the two different waves represented by $x=23 \sin(2t)$ and $x=5+23 \sin(2t)$ respectively are:

asked Dec 9, 2013 by meena.p

1 answer

The motion of an electric train throughout the day is a:

asked Dec 9, 2013 by meena.p

1 answer

When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems the resonance of velocity is more when

asked Dec 9, 2013 by meena.p

1 answer

The phase constant in rad/sec of a simple pendulum whose amplitude of oscillation is 'b', initial displacement is 'y', initial velocity is 'v', frequency in rad/sec is 'w' is

asked Dec 9, 2013 by meena.p

1 answer

The phase constant in radians of a simple pendulum having an initial displacement of 4 units and having an amplitude of 3 is

asked Dec 9, 2013 by meena.p

1 answer

The time period of oscillation in sec of a simple pendulum of length l suspended inside a rocket moving vertically with an acceleration '2a' just above the earth is:

asked Dec 9, 2013 by meena.p

1 answer

A simple pendulum is suspended inside a truck moving uniformly with a small acceleration of $‘2a’.$ Its mean position as an angle in radians with respect to the vertical is

asked Dec 9, 2013 by meena.p

1 answer

If the velocity of a spring mass system which starts from zero is given by $7 \sin(4t)$ then its amplitude of displacement and accelerations are

asked Dec 9, 2013 by meena.p

1 answer

If the acceleration of the mass of a spring mass system is equal to $5 \sin 4t,$ the resulting motion is

asked Dec 9, 2013 by meena.p

1 answer

The damping in a system

asked Dec 9, 2013 by meena.p

1 answer

Which of the following is the correct order of C-C bond length?

asked Dec 9, 2013 by sreemathi.v

1 answer

When three similar springs are connected in series to three non identical masses with two of the masses in between the springs and the other at the end:

asked Dec 9, 2013 by meena.p

1 answer

When four springs are used to suspend a mass what happens to the natural frequency when compared to when each of the spring is used to suspend the same mass:

asked Dec 9, 2013 by meena.p

1 answer

A body starting from rest has the following combinations of acceleration, position, velocity and at one instant while its initial displacement is given as the fourth variable. Which of the following combinations describes $SHM$:

asked Dec 9, 2013 by meena.p

1 answer

How many minimum observations of the velocity (at various time instants) are required to be made to quantify a simple harmonic motion (to form the exact equation describing the displacement as a function of time):

asked Dec 9, 2013 by meena.p

1 answer

The motion of an object is given by $x=23 \sin^2(2-3t).$ This is a

asked Dec 9, 2013 by meena.p

1 answer

The mean position and one extreme position of the two different waves represented by $x=10-20 \sin(8t)$ and $x=12+21sin(3t)$ respectively are:

asked Dec 9, 2013 by meena.p

1 answer

VSEPR notation of $PCl_5, H_2O$ and $ICl_4^-$ are

asked Dec 9, 2013 by sreemathi.v

1 answer

The mean position and one extreme position of the two different waves represented by $x=35 \sin(5t)$ and $x=8+23 \sin(8t)$ respectively are:

asked Dec 9, 2013 by meena.p

1 answer

The motion of stars is a

asked Dec 9, 2013 by meena.p

1 answer

When a damped spring mass system is forced into oscillations at different frequencies it resonates (amplitude increases and peaks when compared to input amplitude) at its damped natural frequency. For such systems for the same input amplitude, the resonance is more when

asked Dec 9, 2013 by meena.p

1 answer

The phase constant, in rad/sec, of a simple pendulum - whose amplitude of oscillation is 'a' initial displacement is 'x', initial velocity is 'v', frequency in rad/sec is 'w' - is equal to:

asked Dec 9, 2013 by meena.p

1 answer

The phase constant in radians of a simple pendulum having an initial displacement of $3.9$ units and having an amplitude of $5.2$ is

asked Dec 9, 2013 by meena.p

1 answer

Match Column I (Name of the compound ) with Column II (structure/geometry of the molecule) and select the correct answer.

asked Dec 9, 2013 by sreemathi.v

1 answer

The frequency of oscillation in rad/sec of a simple pendulum of length l suspended inside a rocket moving vertically with an acceleration 'a' just above the earth is:

asked Dec 9, 2013 by meena.p

1 answer

A simple pendulum is suspended inside a truck moving uniformly with a small acceleration of 'a'. Its mean position as an angle in radians with respect to the vertical is

asked Dec 9, 2013 by meena.p

1 answer

If the velocity of a spring mass system which starts from zero is given by 5 sin(3t) then its amplitude of displacement and accelerations are

asked Dec 9, 2013 by meena.p

1 answer

If the acceleration of the mass of a spring mass system is equal to $2 \sin 2t$, the resulting motion is

asked Dec 9, 2013 by meena.p

1 answer

The damped natural frequency is

asked Dec 9, 2013 by meena.p

1 answer

When two similar springs are connected in series to two non identical masses with one of the masses in between the two springs and the other mass being at the end:

asked Dec 9, 2013 by meena.p

1 answer

Match Column I (Hybrid bond orbitals ) with Column II (species) and select the correct answer.

asked Dec 9, 2013 by sreemathi.v

1 answer

When two springs are used to suspend a mass what happens to the natural frequency when compared to when each of the spring is used to suspend the same mass:

asked Dec 9, 2013 by meena.p

1 answer

Can $SHMs$ have non zero acceleration, velocity and displacement at t=0:

asked Dec 9, 2013 by meena.p

1 answer

A body has the following combinations of acceleration, position and velocity at one instant. Which of the following combinations describes $SHM$:

asked Dec 9, 2013 by meena.p

1 answer

How many minimum observations of the displacement (at various time instants) are required to be made to quantify a simple harmonic motion (form the exact equation describing the displacement as a function of time):

asked Dec 9, 2013 by meena.p

1 answer

According to VSEPR theory, the number of lone pairs in $PCl_5, IF_5, SOF_4$, and $XeOF_4$

asked Dec 9, 2013 by sreemathi.v

1 answer

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