- NCERT Solution
- Popular Books
- Class
- Subject
- Download PDFs
- Quick Revision Notes
- Mind Maps
- Sample Question Papers
- Class 10

- Previous Years Papers
- Class 10

- Important Questions
- Class 10

- NCERT Textbook Solutions
- Class 10

- Supplementary Books
- Class 10

- More
- Join Now

A closed compartment containing gas is moving with some acceleration in horizontal direction. Neglect effect of gravity. Then the pressure in the compartment is

(A) same everywhere

(B) lower in the front side

(C) lower in the rear side

(D) lower in the upper side

(A) same everywhere

(B) lower in the front side

(C) lower in the rear side

(D) lower in the upper side

Answer: B

(b) When a enclosed gas is acclerated in the positve

x-direction tine the pressure of the gas decrease along

the positve x-axis and follows the equation

\(\Delta{P}=-\rho{a}{\left.{d}{x}\right.}\)

Where \(\rho\) is the density and a the acceleration of the

container.

The result will be more pressure on the rear side and

less pressure on the front side.

(b) When a enclosed gas is acclerated in the positve

x-direction tine the pressure of the gas decrease along

the positve x-axis and follows the equation

\(\Delta{P}=-\rho{a}{\left.{d}{x}\right.}\)

Where \(\rho\) is the density and a the acceleration of the

container.

The result will be more pressure on the rear side and

less pressure on the front side.

To Keep Reading This Answer, Download the App

4.6

Review from Google Play

To Keep Reading This Answer, Download the App

4.6

Review from Google Play

Correct16

Incorrect0

Still Have Question?

A small quantity of solution containing \({N}{e}^{{{24}}}\) radio nucliode (half life \(={15}{h}{o}{u}{r}\)) of activity \({1.0}\) microcurlar is injected into the blood of a person A sample of the blood of volume \({1}{c}{m}^{{{3}}}\) taken a after \({5}\) hour shown an activity of the blood in the body of the person . Assume that redicative solution mixed uniformly in the blood of the person \({\left({1}{c}{u}{r}{i}{e}={3.7}\times{10}^{{{10}}}\right.}\) disntegrations per sound)

Which of the following cannot be emited by radicative subsstances durind their decay ?

(A) protons

(B) Neutroes

(C) Helium nuclei

(D) Elactrons

(A) protons

(B) Neutroes

(C) Helium nuclei

(D) Elactrons

The pitch of a screw gauge is 1 mm and there are \({100}\text{divisions}\) on circular scale. When faces \({A}\) and \({B}\) are just touching each without putting anything between the studs 32nd divisions of the circular scale (below its Zero) coincides with the reference line. When a glass plate is placed between the studs, the linear scale reads 4 divisions and the circular reads 16 divisions. Find the thickness of the glass plate. Zero of linnear scale is not hidden from circular scale when A and B touches each other.

The velocity of a projectile when it is at the greatest height is \({\left(\sqrt{{{2}/{5}}}\right)}\) times its velocity when it is at half of its greatest height. Determine its angle of projection.

A shaft is turning at \({65}{r}{a}{d}/{s}\) at time zero. Thereafter, angular acceleration is given by \(\alpha=-{10}{r}{a}{d}/{s}^{{{2}}}-{5}{t}{r}{a}{d}/{s}^{{{2}}}\)

Where \({t}\) is the elapsed time

(a). Find its angular speed at \({t}={3.0}\) s

(b). How much angle does it turn in these \({3}{s}\)?

Where \({t}\) is the elapsed time

(a). Find its angular speed at \({t}={3.0}\) s

(b). How much angle does it turn in these \({3}{s}\)?

A tube \({1.0}{m}\) long is closed at one end. A stretched wire is placed near the open end. The wire is \({0.3}{m}\) long and a mass of \({0.01}{k}{g}\) . It is held fixed at both ends and vibrates in its fundamental mode. It sets the air column in the tube into vibration at its fundamental frequency by resonance. Find

(a) the frequency of oscillation of the air column and

(b) the tension in the wire.

Speed of sound in air = \({330}{m}/{s}\) .

(a) the frequency of oscillation of the air column and

(b) the tension in the wire.

Speed of sound in air = \({330}{m}/{s}\) .

Identify the correct statement about the magnetic field lines.（ ）

A. These start always from closed loops

B. These lines always form closed loops

C. Both A and B are correct

D. Both A and B are wrong

The dimensional forumla for thermal resistance is

(A) \({\left[{M}{L}^{{2}}{T}^{{-{3}}}{K}^{{-{1}}}\right]}\)

(B) \({\left[{M}{L}^{{2}}{T}^{{-{2}}}{A}^{{-{1}}}\right]}\)

(C) \({\left[{M}^{{-{1}}}{L}^{{-{2}}}{T}^{{3}}{K}\right]}\)

(D) \({\left[{M}{L}^{{2}}{T}^{{-{3}}}{K}^{{-{2}}}\right]}\)

(A) \({\left[{M}{L}^{{2}}{T}^{{-{3}}}{K}^{{-{1}}}\right]}\)

(B) \({\left[{M}{L}^{{2}}{T}^{{-{2}}}{A}^{{-{1}}}\right]}\)

(C) \({\left[{M}^{{-{1}}}{L}^{{-{2}}}{T}^{{3}}{K}\right]}\)

(D) \({\left[{M}{L}^{{2}}{T}^{{-{3}}}{K}^{{-{2}}}\right]}\)

Given that \(\int\frac{{{\left.{d}{x}\right.}}}{{\sqrt{{{2}{a}{x}-{x}^{{2}}}}}}={a}^{{n}}{{\sin}^{{-{1}}}{\left(\frac{{{x}-{a}}}{{{a}}}\right)}}\) where a is a constant. Using dimensional analysis. The value of n is

(A) 1

(B) -1

(C) 0

(D) none of the above.

(A) 1

(B) -1

(C) 0

(D) none of the above.

Statement -1 : Distance travelled in nth second has the dimensions of velocity.

Statement -2 : Because it is the distancce travelled in one (particular) second.

(A) Statement -1 is true, Statement -2 is true , and Statement -2 is correct explanation of Statement -1.

(B) Statement -1 is true , Statement -2 is true, but Statement -2 is not a correct explanation of Statement -1.

(C) Statement-1 is true, but Statement -2 is false.

(D) Statement-1 is false, but Statement -2 is true.

Statement -2 : Because it is the distancce travelled in one (particular) second.

(A) Statement -1 is true, Statement -2 is true , and Statement -2 is correct explanation of Statement -1.

(B) Statement -1 is true , Statement -2 is true, but Statement -2 is not a correct explanation of Statement -1.

(C) Statement-1 is true, but Statement -2 is false.

(D) Statement-1 is false, but Statement -2 is true.

Load More

More Solution Recommended For You