anonymous
  • anonymous
An attachment of Questions.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Solve and explain all the questions given in the attachemnt file.
1 Attachment
apoorvk
  • apoorvk
length of night increases, and change to night from day and vice-versa would occur quite suddenly as there will be no atmosphere to cause diffraction as well scattering light rays.
anonymous
  • anonymous
Okay. The other questions please......................

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apoorvk
  • apoorvk
A prism has two inclined surfaces, so even if you the light is incident perpendicular to the first surface, it will bend while emerging from the second. (mudna toh hai hi)
anonymous
  • anonymous
But is there any difference between the refraction of monochromatic and polychromatic light?
anonymous
  • anonymous
But why would night's period increase?
apoorvk
  • apoorvk
|dw:1334821169427:dw| ab ek aur image hoga shaayad, main soch nahi paa raha abhi, bata hoon ek minute ruko. The difference between refraction for monochromatic and polychromatic light is only this that polychromatic light is made up of more than one wavelengths of light. Now, for different wavelengths, relative refractive index is different, toh bending kisi mein kam kisi mein zyada hogi.(jaise color spectrum mein hota hai) @Ishaan94 explanation for why days would get shorter is that, when the earth then while rotating, when a certain longitude of it is just about to lose direct reception of sun rays, would suddenly get dark. BUT, in the present case, due to atmosphere (OOPS i forgot to mention the most important phenomena here - REFRACTION), light rays bend, and reach that portion of the earth for just a few more minutes than they would have. This elongates the daylight period.
apoorvk
  • apoorvk
|dw:1334821864367:dw|
anonymous
  • anonymous
Good figure by the way @apoorvk bhai..............)
apoorvk
  • apoorvk
|dw:1334822038038:dw| Now in this question, there is no net force on the block due to the movement of the elevator, since it is moving with a constant velocity. But the lift moves up by 2m in that once second, and the block also moves by 2metres (since there is no net motion on the incline)
anonymous
  • anonymous
@neha2050 didi, please try. @adityanaik28 bhai, please try.
anonymous
  • anonymous
hey @ Aadarsh bhai kahan ho..
anonymous
  • anonymous
@Taufique bhai, kahiye ji.
anonymous
  • anonymous
av time nahi hai bhai rat tak in sab ka solution vej dunga bhai..Explanation k sath...
anonymous
  • anonymous
Ji haan. Thanks a lot bhai.
anonymous
  • anonymous
wo wala sin^-1x wala graph dekhkr samaj aya tha na bhai,or apparent depth wala physics ka question...
anonymous
  • anonymous
Ji haan. Samajh mein to aaya hia.
anonymous
  • anonymous
ok bhai thik hai iska v vejdunga bhai...
anonymous
  • anonymous
Ji haan. Sure............)
anonymous
  • anonymous
wo ruchi ko ap samjayega thora hehe
anonymous
  • anonymous
ji haan. will try.
anonymous
  • anonymous
chromatic light means jante ho ap kuch..
anonymous
  • anonymous
Ji nahin. Itna kuch nahin. Abhi to apoorv bhai ne samjhaya tha aur mein thoda bahut samajh gaya.
anonymous
  • anonymous
kiya samje...
anonymous
  • anonymous
Jo bhaiya ne definition diya hai, regarding polychromatic light is made of more than one wavelength of light..............
anonymous
  • anonymous
thik hai bhai.. sahi kha usne Aadarsh...
anonymous
  • anonymous
Yeah. aap raat tak sab kuch post kar dijiye.
anonymous
  • anonymous
thik hai beye bhai kar dunga..
apoorvk
  • apoorvk
Hmm, @Aadarsh continuing with the lift-question. So, the block moves up by 2m. And the force of friction is acting at an angle of 45 degrees with the displacement. Its magnitude is (mu *mg * cos45) = mg*sin45 (since the FBD shows that the gravitational force along the incline is being balanced by the frictinal force, causing the block to remain at rest w.r.t. the incline) So work done by friction = = W = F.s.cos(x) ...here F = frictional force's magnitude, s=displacement, x= angle between the direction of the force that is acting and the displacement = 45 degrees S0, W = mgsin45 * s * cos 45 = 10/sqrt2 * 2 * 1/sqrt2 = 10 J.
anonymous
  • anonymous
i wanted to post but i needed to shut the computer
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
|dw:1334963628922:dw|
anonymous
  • anonymous
1 Attachment

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