Physics-

General

Easy

### Question

#### Four balls each of radius 10 cm and mass 1 kg, 2kg, 3 kg and 4 kg are attached to the periphery of massless plate of radius 1 m. What is moment of inertia of the system about the centre of plate?

- 12.04 kg-
- 10.04 kg-
- 11.50 kg-
- 5.04 kg-

#### The correct answer is: 10.04 kg-

#### Moment of inertia of the system about the centre of plane is given by

## Book A Free Demo

+91

Grade*

Select Grade

### Related Questions to study

physics-

#### For the given uniform square lamina , whose centre is

Let the each side of square lamina is .

So, (due to symmetry)

And (due to symmetry)

Now, according to theorem of perpendicular axis,

(i)

and

(ii)

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

So,

So, (due to symmetry)

And (due to symmetry)

Now, according to theorem of perpendicular axis,

(i)

and

(ii)

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

So,

#### For the given uniform square lamina , whose centre is

physics-General

Let the each side of square lamina is .

So, (due to symmetry)

And (due to symmetry)

Now, according to theorem of perpendicular axis,

(i)

and

(ii)

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

So,

So, (due to symmetry)

And (due to symmetry)

Now, according to theorem of perpendicular axis,

(i)

and

(ii)

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

So,

chemistry-

#### Which is correct about the change given below

#### Which is correct about the change given below

chemistry-General

chemistry-

#### Identify Z in the reaction

Which undergoes Cannizaro’s reaction to give Z

#### Identify Z in the reaction

chemistry-General

Which undergoes Cannizaro’s reaction to give Z

chemistry-

#### X and Y are respectively

#### X and Y are respectively

chemistry-General

chemistry-

#### The product A is

#### The product A is

chemistry-General

chemistry-

#### Y is

#### Y is

chemistry-General

chemistry-

#### For which of the following molecule significant m ¹ 0

I)

II)

III)

IV)

-OH and -SH groups do not cancel their dipole moment

#### For which of the following molecule significant m ¹ 0

I)

II)

III)

IV)

chemistry-General

-OH and -SH groups do not cancel their dipole moment

chemistry-

#### Which one of the following will be the major product when

Is treated with dilute H_{2}SO_{4} in the presence of HgSO_{4}

#### Which one of the following will be the major product when

Is treated with dilute H_{2}SO_{4} in the presence of HgSO_{4}

chemistry-General

chemistry-

#### The appropriate reagent (s) for the transformation

is / are

Transformation of C = O group into CH

_{2}in the presence of Zn + Hg is called Clemmensen’s reduction and in the presence of NH_{2}- NH_{2}/OH^{-}is called Wolf-Kishner Reduction#### The appropriate reagent (s) for the transformation

is / are

chemistry-General

Transformation of C = O group into CH

_{2}in the presence of Zn + Hg is called Clemmensen’s reduction and in the presence of NH_{2}- NH_{2}/OH^{-}is called Wolf-Kishner Reductionchemistry-

#### The most suitable reagent of r the conversion of RCH_{2}OH → RCHO is

Refer to Comprehensive Review

#### The most suitable reagent of r the conversion of RCH_{2}OH → RCHO is

chemistry-General

Refer to Comprehensive Review

chemistry-

#### Which alkali metal floats over cold water without any reaction?

4, Na, k all are less denses them water among these first group Li is very less reactive

#### Which alkali metal floats over cold water without any reaction?

chemistry-General

4, Na, k all are less denses them water among these first group Li is very less reactive

physics-

#### The radius of germanium () nuclide is measured to be twice the radius of . The number of nucleons in Ge are

Let radius of nucleus be . Then radius of germanium (Ge) nucleus will be.

Radius ofnucleus is given by

Hence,

Thus, in germanium () nucleus number of nucleons is 72.

Radius ofnucleus is given by

Hence,

Thus, in germanium () nucleus number of nucleons is 72.

#### The radius of germanium () nuclide is measured to be twice the radius of . The number of nucleons in Ge are

physics-General

Let radius of nucleus be . Then radius of germanium (Ge) nucleus will be.

Radius ofnucleus is given by

Hence,

Thus, in germanium () nucleus number of nucleons is 72.

Radius ofnucleus is given by

Hence,

Thus, in germanium () nucleus number of nucleons is 72.

physics-

#### The approximate nuclear radius is proportional to ( is the mass number and the atomic number)

Experimentally it is found that the volume of a nucleus is directly proportional to its mass number. From this it is concluded that the density of each nucleus is uniform, it does not depend on the size of the nucleus.

It the nucleus is assumed to be a sphere of radius and its mass number is , then volume of nucleus

Thus,

Or

the radius of nucleus is directly proportional to the cube root(or power) of its mass number

Aliter

Nuclear radius

It the nucleus is assumed to be a sphere of radius and its mass number is , then volume of nucleus

Thus,

Or

the radius of nucleus is directly proportional to the cube root(or power) of its mass number

*A*.Aliter

Nuclear radius

#### The approximate nuclear radius is proportional to ( is the mass number and the atomic number)

physics-General

Experimentally it is found that the volume of a nucleus is directly proportional to its mass number. From this it is concluded that the density of each nucleus is uniform, it does not depend on the size of the nucleus.

It the nucleus is assumed to be a sphere of radius and its mass number is , then volume of nucleus

Thus,

Or

the radius of nucleus is directly proportional to the cube root(or power) of its mass number

Aliter

Nuclear radius

It the nucleus is assumed to be a sphere of radius and its mass number is , then volume of nucleus

Thus,

Or

the radius of nucleus is directly proportional to the cube root(or power) of its mass number

*A*.Aliter

Nuclear radius

physics-

#### The energy levels of the hydrogen spectrum is shown in figure. There are some transition and Transition and respectively represent

Transition A to 1) : Series limit of Lyman series

Transition B ( to ) : Third spectral line of Balmer series

Transition C ( to ) : Second spectral line of Paschen series

Transition B ( to ) : Third spectral line of Balmer series

Transition C ( to ) : Second spectral line of Paschen series

#### The energy levels of the hydrogen spectrum is shown in figure. There are some transition and Transition and respectively represent

physics-General

Transition A to 1) : Series limit of Lyman series

Transition B ( to ) : Third spectral line of Balmer series

Transition C ( to ) : Second spectral line of Paschen series

Transition B ( to ) : Third spectral line of Balmer series

Transition C ( to ) : Second spectral line of Paschen series

biology

#### In prokaryotes, chromatophores are

#### In prokaryotes, chromatophores are

biologyGeneral