Maths-

#### The equation of the circumcircle of the triangle formed by the lines and y=0 is

Maths-General

#### Answer:The correct answer is:

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### Related Questions to study

physics-

#### Which of the substance or has the highest specific heat? The temperature time graph is shown

Substances having more specific heat take longer time to get heated to a higher temperature and longer time to get cooled.

If we draw a line parallel to the time axis then it cuts the given graphs at three different points. Corresponding points on the times axis shows that

If we draw a line parallel to the time axis then it cuts the given graphs at three different points. Corresponding points on the times axis shows that

#### Which of the substance or has the highest specific heat? The temperature time graph is shown

physics-General

Substances having more specific heat take longer time to get heated to a higher temperature and longer time to get cooled.

If we draw a line parallel to the time axis then it cuts the given graphs at three different points. Corresponding points on the times axis shows that

If we draw a line parallel to the time axis then it cuts the given graphs at three different points. Corresponding points on the times axis shows that

physics-

#### A body is projected up a smooth inclined plane with a velocity from the point as shown in figure. The angle of inclination is and top of the plane is connected to a well of diameter 40 m. If the body just manages to cross the well, what is the value of ? Length of the inclined plane is , and

Let be the velocity acquired by the body at which will be moving making an angle with the horizontal direction. As the body just crosses the well so

or

or

Taking motion of the body from to along the inclined plane we have

As

or or

or

or

Taking motion of the body from to along the inclined plane we have

As

or or

#### A body is projected up a smooth inclined plane with a velocity from the point as shown in figure. The angle of inclination is and top of the plane is connected to a well of diameter 40 m. If the body just manages to cross the well, what is the value of ? Length of the inclined plane is , and

physics-General

Let be the velocity acquired by the body at which will be moving making an angle with the horizontal direction. As the body just crosses the well so

or

or

Taking motion of the body from to along the inclined plane we have

As

or or

or

or

Taking motion of the body from to along the inclined plane we have

As

or or

physics-

#### The figure shows a system of two concentric spheres of radii and and kept at temperatures and respectively. The radial rate of flow of heat in a substance between the two concentric spheres, is proportional to

To measure the radial rate of heat flow, we have to go for integration technique as here the area of the surface through which heat will flow is not constant.

Let us consider an element (spherical shell) of thickness d and radius as shown in figure. Let us first find the equivalent thermal resistance between inner and outer sphere.

Resistance of shell=

=

Rate of heat flow = H

=

=

Let us consider an element (spherical shell) of thickness d and radius as shown in figure. Let us first find the equivalent thermal resistance between inner and outer sphere.

Resistance of shell=

=

Rate of heat flow = H

=

=

#### The figure shows a system of two concentric spheres of radii and and kept at temperatures and respectively. The radial rate of flow of heat in a substance between the two concentric spheres, is proportional to

physics-General

To measure the radial rate of heat flow, we have to go for integration technique as here the area of the surface through which heat will flow is not constant.

Let us consider an element (spherical shell) of thickness d and radius as shown in figure. Let us first find the equivalent thermal resistance between inner and outer sphere.

Resistance of shell=

=

Rate of heat flow = H

=

=

Let us consider an element (spherical shell) of thickness d and radius as shown in figure. Let us first find the equivalent thermal resistance between inner and outer sphere.

Resistance of shell=

=

Rate of heat flow = H

=

=

maths-

#### If the line y = x + 3 meets the circle at A and B, then equation of the circle on AB as diameter is

#### If the line y = x + 3 meets the circle at A and B, then equation of the circle on AB as diameter is

maths-General

physics-

#### An electric lamp is fixed at the ceiling of a circular tunnel as shown is figure. What is the ratio the intensities of light at base *A* and a point *B* on the wall

and

#### An electric lamp is fixed at the ceiling of a circular tunnel as shown is figure. What is the ratio the intensities of light at base *A* and a point *B* on the wall

physics-General

and

physics-

#### Trajectories of two projectiles are shown in figure. Let and be the time periods and and their speeds of projection. Then

Maximum height and time of flight depend on the vertical component of initial velocity

Here

Range

Here

Range

#### Trajectories of two projectiles are shown in figure. Let and be the time periods and and their speeds of projection. Then

physics-General

Maximum height and time of flight depend on the vertical component of initial velocity

Here

Range

Here

Range

physics-

#### Electrons ejected from the surface of a metal, when light of certain frequency is incident on it, are stopped fully by a retarding potential of 3 volts Photo electric effect in this metallic surface begins at a frequency 6 x 1014s ^{-1} The frequency of the incident light in s^{-1} is [h=6 x 10^{-34}J-sec;charge on the electron=1.6x10^{-19}C]

#### Electrons ejected from the surface of a metal, when light of certain frequency is incident on it, are stopped fully by a retarding potential of 3 volts Photo electric effect in this metallic surface begins at a frequency 6 x 1014s ^{-1} The frequency of the incident light in s^{-1} is [h=6 x 10^{-34}J-sec;charge on the electron=1.6x10^{-19}C]

physics-General

maths-

#### Polar of origin (0, 0) w.r.t. the circle touches the circle , if

#### Polar of origin (0, 0) w.r.t. the circle touches the circle , if

maths-General

physics-

#### The distance between a point source of light and a screen which is 60 *cm* is increased to 180 *cm*. The intensity on the screen as compared with the original intensity will be

#### The distance between a point source of light and a screen which is 60 *cm* is increased to 180 *cm*. The intensity on the screen as compared with the original intensity will be

physics-General

maths-

The pole of the straight line 9x + y – 28 = 0 with respect to the circle is

The pole of the straight line 9x + y – 28 = 0 with respect to the circle is

maths-General

physics-

#### Three rods of equal length are joined to form an equilateral triangle O is the mid point of Distance remains same for small change in temperature. Coefficient of linear expansion for and is same, but that for is Then

Neglecting and

#### Three rods of equal length are joined to form an equilateral triangle O is the mid point of Distance remains same for small change in temperature. Coefficient of linear expansion for and is same, but that for is Then

physics-General

Neglecting and

physics-

#### A particle originally at a rest at the highest point of a smooth circle in a vertical plane, is gently pushed and starts sliding along the circle. It will leave the circle at a vertical distance below the highest point such that

From law of conservation of energy, potential energy of fall gets converted to kinetic energy.

Also, the horizontal component of force is equal centrifugal force.

From Eq. (i)

From

Also, the horizontal component of force is equal centrifugal force.

From Eq. (i)

From

#### A particle originally at a rest at the highest point of a smooth circle in a vertical plane, is gently pushed and starts sliding along the circle. It will leave the circle at a vertical distance below the highest point such that

physics-General

From law of conservation of energy, potential energy of fall gets converted to kinetic energy.

Also, the horizontal component of force is equal centrifugal force.

From Eq. (i)

From

Also, the horizontal component of force is equal centrifugal force.

From Eq. (i)

From

physics-

#### A point source causes photoelectric effect from a small metal plate Which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal?

#### A point source causes photoelectric effect from a small metal plate Which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal?

physics-General

physics-

#### One of the following figures respesents the variation of particle momentum with associated de Broglie wavelength

a)

b)

c)

#### One of the following figures respesents the variation of particle momentum with associated de Broglie wavelength

a)

b)

c)

physics-General

physics-

#### For the circuit shown in figure the charge on 4F capacitor is

Combined capacity of and = 1 + 5=

Now, and are in series.

Charge in the arm containing capacitor is

Now, and are in series.

Charge in the arm containing capacitor is

#### For the circuit shown in figure the charge on 4F capacitor is

physics-General

Combined capacity of and = 1 + 5=

Now, and are in series.

Charge in the arm containing capacitor is

Now, and are in series.

Charge in the arm containing capacitor is