Recently Active Physics Questions

A circular disc of diameter d lies horizontally inside a metallic hemispherical bowl of radius 'a'. The disc is just visible to an eye looking over the edge. The bowl is now filled with a liquid of refractive index u. Now the ...

*Image* value of [flux]*[epsilon] through curved surface=?.. i'm getting 56/65 .. pls confrm... ...

A ball of mass M moving with velocity V0 on a frictionless surface strikes the first of two identical balls, each of mass m = 2 kg, connected by a massless spring with spring constant k = 1 kg/s2 (see Figure). Consider the co ...

Last question of old NCERT : Chapter - EMI A line charge " λ " per unit length is lodged uniformly onto the rim of a wheel of mass " M " and radius " R " . The wheel has light non - conducting spokes and is free to rotate wi ...

What is the maximum angle to the horizontal at which a stone can be thrown and always be moving away from the thrower ? the interesting thing is all over projectiles i never thought of this as a problem ;) ...

A physical quantity x is being calculated by using the formula x = yz . In a particular set of values , the value of y is measured with an error of +10% , whereas the value of z is measured with an error of -10% . For this pa ...

10 gms of 57Co kept in an open container beta-decays with a half life of 270 days. The wt. of the material inside the container after 540 days will be very nearly (A) 10 g (B) 5 g (C) 2.5 g (D) 1.25 g ...

the electric field at any point is given by E= ax2i+by2j+cz2k/ax2+by2+cz2 find the flux paasibg thru the solid sphere of radius R with centre at origin. ...

1 . *Image* A plane monochromatic light wave of intesity I 0 falls normally on the surfaces of the opaque screens in the figure here . Find the intensity of light at the behind the blackened points of the screens . ...

Suppose a circular string with linear mass density U and radius R rotates with an angular speed W.A pulse moves on it with some velocity Establish v = WR ( where v means the velocity of any point on the string) ...

1 . *Image* A particle of mass " m " rests on a straight groove along which it is constrained to move . The mass is attached to a vertical rubber band suspended froma rigid support . Initially , the band is of its natural len ...

*Image* find force exerted by 1 on 2 and 2 on 1. ...

consider a u tube filled with water (height h both arms). now let it displace by x units. find time period.... ...

hey...anyone can help me out from these questions..pllzzz Q1. A cylindrical vessel, whose diameter and height both are equal to 30 cm, is placed on horizontal surface and a small particle P is placed in it at a distance of 5 ...

A uniform magnetic field of intensity 1T is applied in a circular region of radius 0.1 m , directed into the plane of paper . A charged particle of mass 5 x 10 -5 kg and charge q = 5 x 10 -4 C enters the field with vel. 1/roo ...

statement1 - a liquid cannot emerge in the form of a fountain from the upper end of a short capillary tube, kept immersed in water. statement2 - if the length of the tube is h' , is less than the rise h , the liquid would spr ...

A thin unifor rod is suspended in vertical plane as a physical pendulum about point A.The time period of oscillation is T0.Not counting the point A,the number N of other points of suspension on rod such that the time period o ...

Ques 1) A solid Copper cube of edge 1 cm is suspended in an evacuated enclosure. It's temperature is found to fall from 100 ° C to 99 ° C in 100 sec. Another solid copper cube of edge 2 cm with similar manner. The time requ ...

wen to and wen not to take self energy... eg: a sphere of mass 2m is broken into two spheres of mass m each and kept dist d apart... also does it mattter whether d original sphere was broken inti a sphere and a cube of mass m ...

today my sir took a lecture on quantum mechanics , and he told us an amazing thing , which i would like to share with the young enthusiastic brains here The particle theory of light failed to explain the phenomenon like diffr ...

if 2 identical point charges , dist d apart, are kept. then how do they know to get away from each other??? i mean .... plz explain wid d help of field lines... ...

*Image* A rod (red) is just release from the position shown here.. Where will the rod finally rest? (to the right, to the left) Why? Clarifications: No friction.. Red part is the rod Vertical Black line is a string Blue top i ...

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In the arrangement shown wavelength of light used is \lambda . The distance b/w slits S1 and S2 is d ( <<D) . The distance b/w S3 and S4 is u = \lambda D / 3d . If the ratio of max to min intensity observed on screen is ...

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What exactly an angle is[1]....since it is dimensionless we know its value should remain same in all units!...so certainly we cant say it is dimensionless.If not dimensionless then what it is??.... say cheese ...

a uniform length L is actd upon by 2 colinear forces P ND Q...APPLIED 2 ITS ENDS IN OPP direction..calculate tension at a distance 'l' frm the end where force P IS APPLIED... ...

*Image* oops i got it now sorry for silly mistake thanx for help....thread closed! ...

*Image* FIGURE (a) A smooth wedge of mass M rests on a smooth horizontal surface. A block of mass m is projected from it's lowermost point with velocity V0 . What is the maximum height reached by the block ? ...