Recent content by sarthak sharma

Homework Statement if the tangent at a point P("theta") on the ellipse 16 (x^2) + 11 (y^2) = 256 is also tangent to the circle (x^2) + (y^2) + 2(x) = 15 then ("theta") = ?? 2. The attempt at a solution {{{{ i have taken "theta" as "d" }}}} P [4 cos d , (16/(sqrt11)) sin d] equation of...

@haruspex i think i kind of get what you want to say that angle of refraction are not very much large... so the diagram given above by @ehild would be an ideal diagram and going by it it is pretty much clear that the incident rays converge on the same side on a point on the pricipal axis and...

@collinsmark @Simon Bridge @haruspex

If the plane surface of a plano-convex lens in silvered then which of the following statements is true? 1. it acts like a convex mirror 2. it acts like a concave mirror 3. it acts like a concave lens 4. no changemy attempt--- the incident ray on the convex surface of the plano-convex will...

@collinsmark hey can you please have a look at the solution as i mentioned above and add your comments on it...

@collinsmark thanks for this solution it really helped me...:):):):):)

can you please explain its solution for this as I'm facing difficulty in it...

sorry to say but I'm unable to understand what you want to say in the above reply...:confused:

i agree with your point of instantaneous acceleration i.e. here energy is lost due to abrupt motion of the rope in lump where it instantaneously changes from zero to a non-zero velocity...and thus we can't apply conservation of energy here in this problem... please help me out with the solution...

i'm also in agreement to the fact that it should not be equal to sqrt(gL) but don't have any other ideas of solving it...

please can you explain how did you get this answer...

i took this problem to one of my seniors and he gave me a different way to solve it which seems to be a much easier method... it is as stated below...i would like to know about what you all think about this solution... relative velocity=v-u ((this we all know and agree upon)) if u=0 i.e...

@Jazz hey can you have a look at this one too and add what's your say about this question...

okay in that way i accept it...it was my mistake as i was considering that by referring to "distance" you mean distance travelled...:P

don't you think that this applies in only some cases but not in all...like if we go 30m towards north then back 20m towards south so here distance is 50m but displacement is 10m towards north