Students and Teacher's Forum

Students and Teachers Forum

1. Which is the fastest media in which data are transmitted according to the speed of light

Fiber optics is the fastest media of data transmission in which data are transmitted according to the speed of the light .....

2. Why did the ancient people give a name loadstone to the stone found in magnesia?

A lodestone is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, which can attract iron. The property of magnetism was first discovered .....

3. Which matrix post multiplies to 1334 to get 19-37513 ?

Let, acbd be the required matrix. Now,1334 ×acbd = 19-37513 1×a+3×c 1×b+3×d3 ×a+4×c3 ×b+4×d = 19-37513 a+3c 1b+3d 3 a+4c3 b+4d = 19-37513 Now , equating the .....

4. If cosx.cosy=1/2 and tanx.tany=1 , solve for x and y

Here, cosx.cosy=1/2 ....................(i) and tanx.tany=1 or, sinx siny = cosx cosy or, sinx sony = 1/2........................(ii) Adding 1 & 2 cosx cosy + sinx siny = 1 or, cos(x - y) = cos0 or, x = .....

tnsf zAbx¿nfO{ cy{ v'Ng] u/L jfSodf k|of]u u/ M
nf}, :ofaf;, k/Gt', g}, tyf

.....

6. गाइ जात्राको बारेमा २ पेज लेखनुहोस ।

गाइ जात्रा पर्व ऐतिहासिक प्रमाण अनुसार पुत्रशोकले विह्वल भएकी आफ्नी रानीलाई दुनियाले पनि .....

7. Find the value of following.

Here, x = 2 ∗ 39 [ Relation between central angle and inscribed angle standing on same arc ] x = 78 Again, y = 39 [ Inscribed angle standing on same arc are equal .....

8. Find the value of following.

Here, ⋖DCO + ⋖COD = ⋖ADB[ Sum of two interior angle of a triangle is equal to its opposite exterior angle] 30 + ⋖COD = 90 ⋖COD = 90 - .....

9. In ∆ABC, AE is the bisector of ∡A and CI is the bisector of ∡ACB. Prove that EB = CE = EI.

Here, ∡BAE = ∡EAC = x(say) [ Since, AE is bisector of ∡A.] ∡BCI = ∡ ACI = y(say) [ Since, CI is bisector of ∡C.] Now, ∡BCE = x .....

10.

sf]i7sdf ;ª\s]t u/]cg';f/ jfSo kl/jt{g u/ M
s_ uf}FynL 3/d} u'F8 nufP/ a;] . - jt{dfg sfn _
==================================================================
V_ alxgL / d ;w}F ljb\ofno hfG5f}F . - e"tsfn _
======================================================================
u_ ltdLn] g]kfnLsf] u[xsfo{ u¥of} < - jt{dfg sfn _
=====================================================================
3_ d]/f] ;fyL lutf/ ahfpg hfGb5 . - eljiot\ sfn _
========================================================================
ª_ olt w]/} dfG5] sxfF a:5g\ < - e"t sfn _
========================================================================

.....

11.

sf]i7sdf ;ª\s]t u/]cg';f/ jfSo kl/jt{g u/ M
s_ uf}FynL 3/d} u'F8 nufP/ a;] . - jt{dfg sfn _
==================================================================
V_ alxgL / d ;w}F ljb\ofno hfG5f}F . - e"tsfn _
======================================================================
u_ ltdLn] g]kfnLsf] u[xsfo{ u¥of} < - jt{dfg sfn _
======================================================================
3_ d]/f] ;fyL lutf/ ahfpg hfGb5 . - eljiot\ sfn _
========================================================================
ª_ olt w]/} dfG5] sxfF a:5g\ < - e"t sfn _
========================================================================

.....

12.

sf]i7sdf ;ª\s]t u/]cg';f/ lqmofsf] ¿k agfP/ vfnL 7fpFdf n]v M
s_ Zofdn] lrl8ofvfgfdf af3=========. - b]v\ M e"t sfn _
v_ alxgLNf] emu8f u/]/ ;a} vfg]s'/f =========. - kf]v\ M e"t sfn _
u_ d ltdLnfO{ w]/} k};f =====================. - lb M jt{dfg sfn _
3_ ltdL oxfF s] u/]/ =====================/ < - a;\ M jt{dfg sfn _
ª_ kl5 o; 7fpFdf e]8fx¿=================. - r/\ M eljiot\ sfn _
r_ lxpFb nfu]kl5 vf]nfx¿===============. - ;'s\ M eljiot\ sfn _

.....

13.

sf]i7sdf ;ª\s]t u/]cg';f/ jfSo kl/jt{g u/L vfnL 7fpFdf n]v M
s_ p;n] /fd|f] uLt ufPsf] lyof] . - cEo:t e"t
====================================================================
v_ d 3/ lt/ cfPsf] lyPF . -ck"0f{ e"t _
======================================================================
u_ pm dRrL dRrL xfF:t} lyof] . - k"0f{ e"t _
==========================================================================
3_ ltdL lbgx'F Jofofd uYof{} . - c1ft e"t _
=========================================================================

.....

14.

tnsf jfSox¿ e"t sfnsf] s'g kIfsf x'g\, lrg / n]v M
s_ Pp6f ;fgf] s]6f] ?Fb} lyof] . → =====================
v_ d t ;wF} /fd|f] sfd uy{] . → =============================
u_ clgtf SofDk; uPsL lyO{ . → ===========================
3_ :ofnn] s'v'/f] vfP5 . → ====================================
ª_ pgLx¿ lgbfO/x]sf] lyP . → ================================
r_ ufO{ al;/x]sf] lyof] . → ===================================
5_ ltdL lrl6Ss k/]/ lxF8\Yof} . → =============================

.....

15.

tnsf lqmof s'g sfnsf x'g\, 5'6\ofP/ vfnL 7fpFdf ;f/ M
rN5, rNg] 5, w'g] 5, wf]O{, w'G5], vfG5', vfPF, vfg] 5, a:g] 5f}, a:of}, a:5f}

e"t sfn	jt{dfg sfn	eljiot\ sfn

.....

16. The line joining one of the vertex of an equilateral triangle and the mid-point of the side opposite to it bisects the vertical angle and perpendicular on the side. Prove it.

Let ABC be a equilateral triangle. Now, take ∆APB & APC and show them congurrent by SSS axiom. Then, Corresponding angles of congurrent triangles are equal. Write the .....

17. If f(x) = 3x + 5, g(x) = x-2 and f^-1g(x) = 6, find the value of x.

Here, f(x) = 3x + 5 and g(x) = x - 2 Now for, f-1(x) let y = f(x) = 3x + 5 interchnging the position of x and y we get, x = 3y + 5 (x - 5) = 3y y = (x - 5)/3 Therefore, f-1(x) = (x - 5)/3 Now, f-1g(x) = [(x .....

18.

tnsf zAbx¿nfO{ cy{ v'Ng] u/L jfSodf k|of]u u/ M
k/f/ M
cr]n M
;/;tL{ M
k6\6L M
v'?v'? M

.....

19.

sf]7faf6 ldNbf] gfdof]uL zAb 5fg]/ vfNfL 7fpF e/ M
s_ kf]xf]/ ;fn b;}F ========Ps lbg a]n'sL=========xfdL ;kl/jf/ ahf/lt/ 3'Dg lg:s]sf lyofF} .
kv÷tfs_
v_ 3/ ========auF}rfdf k'u]/ xfdLn] a'af=========cfˆgf s'/f v'n:t ¿kdf /fVof}F .
u_ ufpF =======3'Dg hfG5' eg]/ lgl:sPsf] ltd|f] 7'nf] bfO clxn] =====;Dd kms{]/ cfPsf] 5}g . - ;Dd÷lt/ _
3_ xft xltof/ ======= cfPsf 8fFsfx¿======= /ftel/ k|x/Lsf] 7'nf] le8Gt eof] . - l;t÷;lxt _

.....

20. Diagonals AC and BD of parallelogram ABCD meet at O. If a line through O meet AB at E and CD at F, show that the area of quadrilateral AEFD = 1/2 area of □ ABCD.

Here, ∆BOE ≅ ∆DOF [ By ASA axiom.] i.e; ∆BOE = ∆DOF ...........(i) Now, Qd.AEFD = ∆AOE + ∆DOA + ∆DOF [ Whole part axiom.] or, Qd.AEFD .....

21. If the p^th term of an AS is 1/q and q^th term is 1/p, prove that (pq)^th term is 1.

.....

22. What happens when a burning magnesium is inserted in the jar containing carbon dioxide? Write the chemical equation.

Magnesium burns in presence of carbon dioxide because, the oxygen in the carbondioxide is able to boind with magnesium and produce an oxide. Carbon is formed as a biproduct the carbon which is formed is in the form of soot. Burning or Mg in CO2 .....

23. It is dangerous to clean well remaining closed for a long time, why?

As there will be a lack of oxygen inside the close well, the person cleaning the well can suffocate. So it is dangerous to clean a well remaining closed for a longer .....

24.

sf]7faf6 ldNbf] lqmofof]uL zAb 5fg]/ vfnL 7fpF e/ M
s_ =========ltdL u[xsfo{ gu/L s] u/]/ a:of}, xF < dfdf3/ hfg egL lxF8]sf] d]/f] efO=======sxfF k'Uof] xf]nf < - oltv]/÷oltGh]n _
v_ efO / d psfnf] lxF8\b} lyofF}===========ufpFdf k'u]/ bxL vfg] ljrf/n] xfdL ===========nfUof}F . – pFef]÷dfly
u_ tkfO{ ========= lt/ lx8\g'ePsf] s'/f] xfdLnfO{ =========cl3 g} yfxf eO;Sof] . clxn] sxfF cfOk'Ug'eof] < - otf÷oxfF _
3_ d'lStgfy hfFbf laxfg =========xfjf rNb} lyof] . xfdL rflxF lr;f] xfjfdf /dfpFb} =====lxFl8/XofF} . -;/f;/÷;/;/_

.....

25. Why did Prithvi Narayan Shah appoint Kalu Pande as the Kazi of Gorkha?

There was an agreement reached between Gorkha and Ripu Mardan Shah, the king of Lamjung through the efforts sought by Kalu Pandey. Prithivi Narayan Shah promoted Kalu Pandey to the post of 'kaji', as per the wishes of his caretaker mother .....

26. Rohan had 5/8 of a cake? He ate 2/5 of it. What part of the whole cake did rohan eat?

Here, Let hole part be x. Then, He has 5x / 8 cake. Now he ate 5x/ 8 ⨯ 2/5 = x /4 . So, he ate 1/4 part of wholw .....

27. What is economic blockade?

An economic blockade in particular, targets to disrupt the economic activities of an area. It can do so by severing all trade ties, destroying markets and other activities to destroy the economic condition of a country. The basic aim is to isolate .....

28. How do the cultural heritages promote tourism? Any 8 points.

- Cultural heritage represents a huge and varied collection of human creation across the entire globe and the entire span of human history which promotes tourism. - It spells bound the people around the globe and they come to visit which helps to .....

29. Wap to check perfect square number.

.....

30. Find the value of x and y in the figure given below giving reason.

Here, ⦟ DAB = ⦟ ABD = 37⁰[ base angle of isosceles triangles are equal.] ⦟ DAB + ⦟ ABD = ⦟BDC [ sum of two opposite interior angles = exterior angle] ⦟BDC = y =37⁰ +37⁰ = 74⁰ ⦟BDC = ⦟ DCB = 74⁰[ base .....

31. Name these sets and write the member of sets.

1. This is a set of vegetables. Its members are {cauliflower, carrot, tomato, cabbage} 2. This is a set of fruits. Its members are {pear, strawberry, papaya, grapes} 3.This is a set of flowers. Its .....

32. (cotA-3)(3cotA-1)=3cosec²A-10cotA

from LHS (cot A - 3) (3 cot A - 1) =3cot2 A - cot A - 9cot A + 3 = 3(cosec2A - 1) -10 cot A +3 [cot2 A = cosec2A - 1 ] = 3cosec2A - 3 - 10 cot A .....

33. प्राणीहरु कति बेला फस्टिनेछन् ?

पानी परेपछि रुखका जराले खानेकुरा पाउँछन् । यसपछि रुखले नयाँ प्राण धारण गर्छन् । .....

34. पानी परेपछि खहरे खोला कसरी बग्न थाल्छन् ?

पानी परेपछि खहरे खोला बिजुलीको वेगमा बग्न थाल्छन् । ठूलो आवाजका साथ चञ्चल बनी अघि .....

35. मानव सभ्यताको संरक्षण शिर्षकमा निबन्ध लेख्नुहोस

सभ्यता र संस्कार

नेपालीहरु आफ्नै भाषा, भेषभूषा, .....

36. Bones of lower jaw

Bone of lower jaw is called .....

37. पृथ्वी के कारणले कलिली देखिन्छिन् ?

पानी परेपछि पृथ्वी नरम हुन्छ । यसपछि पृथ्वी कलिली देखिन्छिन् । नरम बनेको .....

38. An umbrella is made by stitching 20 triangular pieces of cloth of two different colors, each piece measuring 13 cm, 20 cm and 21 cm. How much cloth is required for the umbrella if the cost of 1 square cm is Rs.25, find the total cost of cloth. [ Ans- Rs. 63000 ]

.....

39. 2 circles sit inside rectangle ABCD such that AB is tangent to both circles. AC and CD are CD are tangents to larger circle and BD is tangent to smaller circle. Find r₂.

Let us make the figure and construct as shown: Here, I wrote r2 = r. Now in right angled triangle OO'R, (4 + r)2 = ( 8 - r)2 + (4 - r)2 [ Since, h2 = p2 + b2.] Simplify and get r = 2cm and .....

40. Difference between true ribs and false ribs.

True ribs join directly, each via its own cartilage, to the breastbone or sternum. False ribs connect to a common piece of cartilage which then connects with the .....

41. The pupa stage of the silkworm and honeybee is also called the resting stage why

The pupa stage of the silkworm and honeybee is called resting stage because the brood inside the cocoo, the pupa gets .....

42. The Slant height of cone is 25cm and the sum of their curved surface area is 858 square cm.Find the common radius if their is hemisphere too.

Let r be the common radius. Then, Total CSA = πrl + 2πr2 or, 858 = 25πr + 2πr2 or, 2r2 + 25r = 858/π or, 2r2 + 25r - 273 = 0 Now factorize and find .....

43. Why queen bee grows faster than other bees?

Queen bee grows faster than other bees because the queen larva receives royal jelly more than other bee. And due to difference in intake of nutrients, bees show difference inthe rate of their .....

44. Write three applications of archimedes principle.

Fish float based on Archimedes' principle. Most fish have an organ known as the swim bladder. When they want to rise, fish release gas into the swim bladder and increase their volume. As a result, they displace more water. The force of .....

45. Name the bone of forehead

The frontal bone or os frontis is a bone in the front of the human skull. The biggest part of the frontal bone is under .....

46. Find out the reasons for the defeat of democratic forces in the referendum of 2036.

The referendum was declared for the first time in Nepal on 10th Jestha 2036 BS. It was held on 20th Baishakh 2037 BS. The result of the referendum was the victory of partyless Panchayat System. The record shows that 24 lakhs people voted in .....

47. Find the value of unknown angle.

Here, BQ and AQ is a tangent to the circle touching at point B and P respectively. Then, ⋖OCQ = 90 [ The radius is perpendicular to the tangent at the point of contact ] Similarly, ⋖OPQ = 90 [ The radius is perpendicular to the tangent at the .....

48. What is column choromatography?

Column Chromatography is a preparative technique used to purify compounds depending on their polarity or hydrophobicity. In column chromatography, a mixture of molecules is separated based on their differentials partitioning between a mobile phase .....

49. Find the value:

.....

50. Ssid

SSID stands for Service Set Identifier. An SSID is a unique ID that consists of 32 characters and is used for naming wireless networks. When multiple wireless networks overlap in a certain location, SSIDs make sure that data gets sent to the .....