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Recent questions tagged class11

Write the negation of "Chennai is the capital of Tamil Nadu."

asked Jul 14, 2014 by rvidyagovindarajan_1

1 answer

Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum for the following : $ x^2=-16y$

asked Jul 14, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum for the following : $ y^2=-8x$

asked Jul 14, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum for the following : $ x^2=6y$

asked Jul 14, 2014 by thanvigandhi_1

1 answer

Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum for the following : $ y^2=12x$

asked Jul 14, 2014 by thanvigandhi_1

1 answer

A body is projected with speed $v_1$ at an angle of $45^{\circ}$ to the horizontal from a point A. At the same instant, another body is projected vertically below the highest point of the path of the first body, Both the bodies will collide if $v_1/v_2$ is

asked Jul 14, 2014 by meena.p

1 answer

A projectile is thrown with velocity u making angle $\theta$ with vertical. It just crosses the tops of two poles each of height h after 1 second respectively. The maximum height of projectile is

asked Jul 14, 2014 by meena.p

1 answer

From a point on the group at a distance 2 meters from the foot of a vertical wall , a ball is thrown at an angle $45^{\circ}$ which just clear the top of the wall and afterwards strikes the ground at a distance 4 m on the other side. The height of the wall is

asked Jul 14, 2014 by meena.p

1 answer

The velocity at the maximum height of a projectile is half of its initial velocity of projection u. Its range on horizontal plane is

asked Jul 14, 2014 by meena.p

1 answer

A body is projected at an angle $30^{\circ}$ to the horizontal with a speed $39.2 ms^{-1}$.What is the angle of projectile with the horizontal after 2 seconds ? (take $g= 9.8\;ms^{-2} )$

asked Jul 14, 2014 by meena.p

1 answer

The velocity of projection of an oblique projectile is $(6i +8j)m/s$ . The horizontal range of projectile is $( g=10 m/s)^2$

asked Jul 14, 2014 by meena.p

1 answer

The range of projectile which is launch at an angle of $15^{\circ}$ with the horizontal is $1.5 \;km$ what is the range of the projectile if it is projected at an angle of $45^{\circ}$ to the horizontal ?

asked Jul 14, 2014 by meena.p

1 answer

Does the point (–2.5, 3.5) lie inside, outside or on the circle $x^2 + y^2 = 25$ ?

asked Jul 13, 2014 by thanvigandhi_1

1 answer

Find the equation of a circle with centre $(2,2)$ and passes through the point $(4,5)$.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle passing through $(0,0)$ and making intercepts a and b on the coordinate axes.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with radius $5$ whose centre lies on x-axis and passes through the point $(2,3)$.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle passing through the points $(2,3)$ and $(–1,1)$ and whose centre is on the line $x–3y–11 = 0$.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle passing through the points (4,1) and (6,5) and whose centre is on the line 4x + y = 16

asked Jul 13, 2014 by thanvigandhi_1

1 answer

$2x^2 + 2y^2 – x = 0$, find the centre and the radius of the circles.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

$x^2+y^2–8x+10y–12=0$, find the centre and radius of the circles.

asked Jul 13, 2014 by thanvigandhi_1

1 answer

Find the value of $g$ (in $m\;s^{-2}$) up to approximate significant figures stating the uncertainty in the value of $g$, given the following information:

asked Jul 12, 2014 by balaji.thirumalai

1 answer

In the following experiment, find the value of the density in g cm$^{-3}$ up to the appropriate significant figures, stating the uncertainty in the value of the density.

asked Jul 12, 2014 by balaji.thirumalai

1 answer

Find the total mass up to the appropriate significant figures of four objects that have the following masses: 1.54 Kg, 3.668 Kg, 5.1278 Kg and 2.5 Kg

asked Jul 12, 2014 by balaji.thirumalai

1 answer

What is the area of the cross section of the wire up to approximate significant figures if the radius of a uniform wire is 0.021 cms. The value of $\pi$ is given to be 3.142.

asked Jul 12, 2014 by balaji.thirumalai

1 answer

A man runs 100.5 m in 10.3 seconds. What is his average speed up to approximate significant figures?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

A bee of mass 0.000087 Kg sits on a flower of mass 0.0123 Kg. What is the total mass supported by the stem of the flower up to the approximate significant figures?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

The dimensional method cannot be used to obtain the dependence of which of the following?

asked Jul 12, 2014 by balaji.thirumalai

1 answer

The radius of sphere is measured to be $(2.1 \pm 0.5)$ cms. What is its surface area with error limits?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

The velocity v of a particle at time t is given by $v=a+ bt+\large\frac{c}{t+d}$ where a, b, c and d are constants. The dimensions of a, b c and d are respectively

asked Jul 11, 2014 by balaji.thirumalai

1 answer

Given that the pressure $p$ at a depth $h$ below the surface of a fluid of density $\rho$ is given by $p = \rho gh$, where $g$ is the acceleration due to gravity, which of the following represent the dimensions of pressure?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

Which of the following is a good predictor of a period $\text{t}$ of a swinging pendulum based on the factors such as Length (l), Angle ($\theta$), the mass (m) and acceleration due to gravity (g)?

asked Jul 11, 2014 by balaji.thirumalai

1 answer

$x^2+ y^2– 4x–8y–45=0$ find the centre and radius of the circles.

asked Jul 11, 2014 by thanvigandhi_1

1 answer

$(x+5)^2+(y-3)^2=36$ find the centre and radius of the circles.

asked Jul 11, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with centre (–a, –b) and radius $ \sqrt{a^2-b^2}$

asked Jul 11, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with centre (1,1) and radius $ \sqrt 2$

asked Jul 11, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with centre $ \bigg( \large\frac{1}{2}$$, \large\frac{1}{4} \bigg)$ and radius $ \large\frac{1}{12}$

asked Jul 11, 2014 by thanvigandhi_1

1 answer

Two bodies are projected from the same point with the same speed but in different directions so as to have the same range. The ratio of their times of flight are .

asked Jul 11, 2014 by meena.p

1 answer

The greatest distance to which a man throw a stone is a. The greatest height to which he can throw it will be

asked Jul 11, 2014 by meena.p

1 answer

An object is thrown along a direction inclined at an angle of $45^{\circ}$ with the horizontal range of the particle is equal to

asked Jul 11, 2014 by meena.p

1 answer

Find the equation of the circle with centre (–2,3) and radius 4

asked Jul 11, 2014 by thanvigandhi_1

1 answer

Find the equation of the circle with centre (0,2) and radius 2

asked Jul 11, 2014 by thanvigandhi_1

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be $21.2\; s$ Suggest method to improve the accuracy of the result.

asked Jul 11, 2014 by meena.p

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be $21.2\; s$ . To get more accurate value of g , will more accurate measurement of bob will help ?

asked Jul 11, 2014 by meena.p

1 answer

The hypotenuse of a right angled triangle has its ends at the points (1, 3) and (– 4, 1). Find an equation of the legs (perpendicular sides) of the triangle.

asked Jul 11, 2014 by thanvigandhi_1

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be 98.2cm. The diameter of the bob was measured by a vernier caliper and it was found to be 3.62cm. The time for 10 oscillations was found to be 21.2 seconds. What is maximum error in the value of g?

asked Jul 11, 2014 by meena.p

1 answer

The length of string of a simple pendulum as measured by a meter scale was found to be $98.2 \;cm$ The diameter of the bob was measured by a vernier caliper and it was found to be $3.62\;cm$ The time for 10 oscillations was found to be 21.2 s What is the effective length of the pendulum

asked Jul 11, 2014 by meena.p

1 answer

While measuring the volume of sphere an error of $1.2 \%$ is committed in the measurement of radius. What percentage error is introduced in the measurement of volume ?

asked Jul 11, 2014 by meena.p

1 answer

The length and breadth of a rectangular area are 25.2 cm and 16.8 cm respectively and have been measured to an accuracy of 0.1 cm. Find the percentage error in the area .

asked Jul 11, 2014 by meena.p

1 answer

The initial and final temperature of water in a container are observed as $15 \pm 0.5^{C}$ and $40 \pm 0.2 ^{\circ}$ what is the rise in temperature ?

asked Jul 11, 2014 by meena.p

1 answer

Two resistances $R_1=50 \pm 1\;ohm$ and $R_2=100 \pm 3\;ohm$ are connected in series. Assuming the errors to be limiting error , find the equivalent resistance with error.

asked Jul 11, 2014 by meena.p

1 answer

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