a box is divided into two equal compartments by a thin partition and they are filled with gases X and Y respectively. the two compartments have a pressure of 250 torr each. the pressure after remving partition will be equal to ?

A simple pendulum with bob of mass m and conducting wire of length L swings(is hanging ) under gravity thro' an angle 2theetha.

The earth's magnetic feild component in the direction perpendicular to swing is B.

the max potential diff induced across pendulum is?

the magnetic flux(x) through a stationary loop with resistance R varies during interval of time T as x= at(T-t). The heat generated during this time neglecting the inductance of loop will be

1) a^{2}T^{3}/3R

2) a^{2}T^{2}/3R

3) a^{2}T/3R

4) a^{3}T^{2}/3R

a box is divided into two equal compartments by a thin partition and they are filled with gases X and Y respectively. the two compartments have a pressure of 250 torr each. the pressure after remving partition will be equal to ?

Answer is (4) plz tell the reason

Please Explain Question No 14

14. A rod AB slides on a V shaped wire with speed v as shown, such that at any time OA = OB = l. Magnetic field in the region is perpendicular downwards and has strength B, induced emf in the rod is

$\left(1\right)Zero\left(2\right)Bvl\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(3\right)\frac{\sqrt{3}Bvl}{2}\left(4\right)\frac{Bvl}{2}$

velocity v towards East. The vertical component of

earth magnetic field is B and angle of dip is θ. The

induced e.m.f. in rod is

(1) Blv cot θ (2) Blv sin θ

(3) Blv tan θ (4) Blv cos θ

Ris rotated with an angular velocity ω perpendicular to the plane of a magnetic fieldBas shown in the figure. Emf induced in the loop is(1)

BωR^{2}(2) $\frac{1}{2}B\omega {R}^{2}$ (3) $\frac{3}{2}B\omega {R}^{2}$ (4) $\frac{1}{4}B\omega {R}^{2}$(Answer 2L)

A simple pendulum with bob of mass m and conducting wire of length L swings(is hanging ) under gravity thro' an angle 2theetha.

The earth's magnetic feild component in the direction perpendicular to swing is B.

the max potential diff induced across pendulum is?

the magnetic flux(x) through a stationary loop with resistance R varies during interval of time T as x= at(T-t). The heat generated during this time neglecting the inductance of loop will be

1) a

^{2}T^{3}/3R2) a

^{2}T^{2}/3R3) a

^{2}T/3R4) a

^{3}T^{2}/3R^{4}+1= 0 then z can take the value