Maths-

#### If one root of the equation is reciprocal of the one of the roots of equation then

Maths-General

#### Answer:The correct answer is:

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### Related Questions to study

maths-

A triangle is inscribed in a circle. The vertices of the triangle divide the circle into three arcs of length 3, 4 and 5 units. Then area of the triangle is equal to:

A triangle is inscribed in a circle. The vertices of the triangle divide the circle into three arcs of length 3, 4 and 5 units. Then area of the triangle is equal to:

maths-General

maths-

#### If the quadratic equation and have a common root then is equal to

#### If the quadratic equation and have a common root then is equal to

maths-General

maths-

maths-General

chemistry-

#### Compounds (A) and (B) are –

#### Compounds (A) and (B) are –

chemistry-General

physics-

#### Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on frictionless horizontal surface. An impulsive force gives a velocity of 14 to the heavier block in the direction of the lighter block. The velocity of centre of mass of the system at that very moment is

At the time of applying the impulsive force block of 10 kg pushes the spring forward but 4 kg mass is at rest.

Hence,

Hence,

#### Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on frictionless horizontal surface. An impulsive force gives a velocity of 14 to the heavier block in the direction of the lighter block. The velocity of centre of mass of the system at that very moment is

physics-General

At the time of applying the impulsive force block of 10 kg pushes the spring forward but 4 kg mass is at rest.

Hence,

Hence,

maths-

#### In a Δabc if b+c=3a then has the value equal to –

#### In a Δabc if b+c=3a then has the value equal to –

maths-General

maths-

#### In a simplifies to

#### In a simplifies to

maths-General

maths-

#### In a triangle ABC, a: b: c = 4: 5: 6. Then 3A + B equals to :

#### In a triangle ABC, a: b: c = 4: 5: 6. Then 3A + B equals to :

maths-General

physics-

#### A bullet of mass is fired with a velocity of 50 at an angle with the horizontal. At the highest point of its trajectory, it collides had on with a bob of massless string of length m and gets embedded in the bob. After the collision, the string moves to an angle of 120. What is the angle

Velocity of bullet at highest point of its trajectory = 50 in horizontal direction.

As bullet of mass collides with pendulum bob of mass 3 and two stick together, their common velocity

As now under this velocity pendulum bob goes up to an angel 120, hence

or

Comparing two answer of , we get

or

As bullet of mass collides with pendulum bob of mass 3 and two stick together, their common velocity

As now under this velocity pendulum bob goes up to an angel 120, hence

or

Comparing two answer of , we get

or

#### A bullet of mass is fired with a velocity of 50 at an angle with the horizontal. At the highest point of its trajectory, it collides had on with a bob of massless string of length m and gets embedded in the bob. After the collision, the string moves to an angle of 120. What is the angle

physics-General

Velocity of bullet at highest point of its trajectory = 50 in horizontal direction.

As bullet of mass collides with pendulum bob of mass 3 and two stick together, their common velocity

As now under this velocity pendulum bob goes up to an angel 120, hence

or

Comparing two answer of , we get

or

As bullet of mass collides with pendulum bob of mass 3 and two stick together, their common velocity

As now under this velocity pendulum bob goes up to an angel 120, hence

or

Comparing two answer of , we get

or

physics-

#### A spherical hollow is made in a lead sphere of radius such that its surface touches the outside surface of lead sphere and passes through the centre. What is the shift in the centre of lead sphere as a result of this hollowing?

Let centre of mass of lead sphere after hollowing be at point where

Mass of spherical hollow and

shift

Mass of spherical hollow and

shift

#### A spherical hollow is made in a lead sphere of radius such that its surface touches the outside surface of lead sphere and passes through the centre. What is the shift in the centre of lead sphere as a result of this hollowing?

physics-General

Let centre of mass of lead sphere after hollowing be at point where

Mass of spherical hollow and

shift

Mass of spherical hollow and

shift

maths-

maths-General

maths-

#### The coefficient of in is

#### The coefficient of in is

maths-General

chemistry-

#### On heating a mixture of ans , we get –

#### On heating a mixture of ans , we get –

chemistry-General

physics-

#### Three identical blocks and are placed on horizontal frictionless surface. The blocks and are at rest. But is approaching towards with a speed 10 . The coefficient of restitution for all collisions is 0.5. The speed of the block just after collision is

For collision between blocks and ,

from principle of momentum conservation,

Or

Adding Eqs. (i) and (ii), we get

Similarly for collision between and

…(iv)

Adding Eqs. (iii) and (iv) we get

from principle of momentum conservation,

Or

Adding Eqs. (i) and (ii), we get

Similarly for collision between and

…(iv)

Adding Eqs. (iii) and (iv) we get

#### Three identical blocks and are placed on horizontal frictionless surface. The blocks and are at rest. But is approaching towards with a speed 10 . The coefficient of restitution for all collisions is 0.5. The speed of the block just after collision is

physics-General

For collision between blocks and ,

from principle of momentum conservation,

Or

Adding Eqs. (i) and (ii), we get

Similarly for collision between and

…(iv)

Adding Eqs. (iii) and (iv) we get

from principle of momentum conservation,

Or

Adding Eqs. (i) and (ii), we get

Similarly for collision between and

…(iv)

Adding Eqs. (iii) and (iv) we get

physics-

#### Two identical masses and are hanging stationary by a light pulley (shown in the figure). A shell moving upwards with velocity collides with the block and gets stick to it. Then

When collides with then due to impulsive force, combined mass () starts to move upward. Consequently the string becomes slack

#### Two identical masses and are hanging stationary by a light pulley (shown in the figure). A shell moving upwards with velocity collides with the block and gets stick to it. Then

physics-General

When collides with then due to impulsive force, combined mass () starts to move upward. Consequently the string becomes slack