In a Young's double slit experiment the intensity at the cetral maxima is I_{0}. Find the intensity at a distance

B(beta)/4 from the central maxima where B(beta) is the fringe width.

a thin film of water (refractive index= 4/3) is 3100 angstom thick. if it is illuminated by a white light and normal incidence . the color of film in the reflected light will be

1) blue

2) black

3) yellow

4) red

A plane mirror is placed at origin parallel to y-axis, facing the positive x axis. An object starts from (2m,0,0)with a velocity of (2^i + 2^j) m/s. The relative velocity of image with respect to object is along

two rods of equal length(l) and equal mass M are kept along x and y axis respectively such that their centre of mass lie at origin.the moment of inertia about an line y=x,is

a particle is moving on a circular path with constant speed V. it moves between two points A and B, which subtends an angle 60degree at the centre of circle. the magnitude of change in its velocity and change in magnitude og its velocity during motion from A to B are respectively

1) zero,zero

2) v,0

3) 0,v

4) 2v,v

In a Young's double slit experiment the intensity at the cetral maxima is I_{0}. Find the intensity at a distanceB(beta)/4 from the central maxima where B(beta) is the fringe width.a thin film of water (refractive index= 4/3) is 3100 angstom thick. if it is illuminated by a white light and normal incidence . the color of film in the reflected light will be

1) blue

2) black

3) yellow

4) red

$\left(1\right)30\hat{i}kgm{s}^{-1}\phantom{\rule{0ex}{0ex}}\left(2\right)-30\hat{i}kgm{s}^{-1}\phantom{\rule{0ex}{0ex}}\left(3\right)6\hat{i}kgm{s}^{-1}\phantom{\rule{0ex}{0ex}}\left(4\right)-6\hat{i}kgm{s}^{-1}$

plz ans fast !

Solve this :$8.\mathrm{If}\mathrm{current}{\mathrm{I}}_{3}=3\mathrm{A}\mathrm{sin}\mathrm{\omega t}\mathrm{and}{\mathrm{I}}_{2}=4\mathrm{A}\mathrm{cos}\mathrm{\omega t},\mathrm{then}{\mathrm{I}}_{3}\mathrm{is}:\phantom{\rule{0ex}{0ex}}\left(1\right)5\mathrm{A}\mathrm{sin}\left(\mathrm{\omega t}+53\xb0\right)\left(2\right)5\mathrm{A}\mathrm{sin}\left(\mathrm{\omega t}+37\xb0\right)\phantom{\rule{0ex}{0ex}}\left(3\right)5\mathrm{A}\mathrm{sin}\left(\mathrm{\omega t}+45\xb0\right)\left(4\right)5\mathrm{A}\mathrm{sin}\left(\mathrm{\omega t}+30\xb0\right)$

A plane mirror is placed at origin parallel to y-axis, facing the positive x axis. An object starts from (2m,0,0)with a velocity of (2^i + 2^j) m/s. The relative velocity of image with respect to object is along

two rods of equal length(l) and equal mass M are kept along x and y axis respectively such that their centre of mass lie at origin.the moment of inertia about an line y=x,is

Q. If radii of curvature of both convex surfaces is 20 cm, then focal length of the lens for an object placed in air in the given arrangement is

(1) 10 cm

(2) 20 cm

(3) 40 cm

(4) 80 cm

a particle is moving on a circular path with constant speed V. it moves between two points A and B, which subtends an angle 60degree at the centre of circle. the magnitude of change in its velocity and change in magnitude og its velocity during motion from A to B are respectively

1) zero,zero

2) v,0

3) 0,v

4) 2v,v