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Student Questions
Identify isostructural pairs NF3 No3- BF3 H3+O HN3
chemistry
class11
asked
Apr 6, 2020
by
tatikondasrinivas313
1
answer
Picture question - class 11 - physics
physics
class11
asked
Apr 6, 2020
by
thakursarita748
1
answer
(chatquestion)...(c) 15 J none of these (p) 26. A particle ´A' of mass m collides head on with another stationary particle 'B’ of the same mass 'm'.The kinetic energy lost by the colliding particle 'A' will be maximum if the coefficient of the restituition is AS (a) 1 (b) 0 (c) 0.5 (d) none 27. A plank of mass m moving with a velocity 'v' along a frictionless horizontal track and a | 30. body of mass m/2 moving with 2 v collides...(26th)
other
telegram-61858
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A lens forms a real image of an object on a screen placed at a distance of 100 cm from the screen. If the lens is moved by 20 cm towards the screen, another image of the object is formed on the screen. What is the focal length of the lens ? [Ans. 24 cm]
other
telegram-1606
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...LAIIS. 20 cn] A convex lens of focal length 20 cm produces an image half the size of the object, what is the distance of the object from the lens ? [Ans. 10 cm]
other
telegram-1604
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A lamp is placed 6-0 m from a wall. On putting a lens between the lamp and the wall at a distance of 1-2 m from the lamp, a real image of the lamp is formed on the wall. What is the magnification of the image ? (C.P.M.T.) [Ans. - 4]
other
telegram-1603
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A object 10 cm high is placed at the principal focus of a concave lens of focal length 20 cm. Find the size, position and nature of the image. (C.B.S.E.) [Ans. 5 cm, - 10 cm, erect]
other
telegram-1602
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...[Ans. 3-46 cm] An empty spherical flask of diameter 20 cm and of negligible thickness is placed in a liquid of refractive index 1-65. A parallel beam of light strikes the flask. From where does the light appear to come if seen froi within the flask ? [Ans. - 15-4 cm] sed on Lens maker Formula and
other
telegram-1600
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A sphere of glass 10 cm in diameter contains a small air bubble which appears to be 3 cm below the surface of the sphere when seen along the diameter. What is the actual distance of the bubble from the surface ? Given, n = 1-5. %3D [Ans. 3-46 cm] An empty sphericelA
other
telegram-1598
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A diver looking up through the water in a lake sees the outside world contained in a circular horizon. If the refractive index of water is 4/3 and the eye of the diver is situated 10 cm below the surface, what is the radius of the horizontal circle ? [Ans. 11-34 cm]
other
telegram-1596
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
Arrange the following in increasing order of connections a1% by mass b 1ppm
chemistry
class12
asked
Apr 5, 2020
by
shrutisingh0660
0
answers
(chatquestion)...Complex number z satisfies arg (z - (3 + 3i)) = a and arg z-2 TC 58. 11 then range of a such that no z z-2i exists is [a ,b], then find the value of [ 10 Ja+b|] where [.] represents the greatest integer function and arg means principal value of argument. 11a + hl
other
telegram-61852
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
if the quartiles for the following distribution are q1=23.125 and q3=43.5,f
noclass
asked
Apr 5, 2020
by
amit84ridhi
1
answer
(chatquestion)...wave is given by E = 100 sin (10+2z) j then H [AIIMS 2010] 39. If electric field in a nonmagnetic medium for EM is :- 50 (1) sin (10't+2z)i (2) sin (10°t +2z)î INS AST (3) 20 sin (10s t + 2z) i LA 25 (4) sin (10°t+2z)j Rajl
other
telegram-61848
asked
Apr 5, 2020
by
balaji.thirumalai
0
answers
The point intersection 2x+3y=0 and x+5y=0 is
math
class9
asked
Apr 5, 2020
by
vishalreddy69748
1
answer
(chatquestion)...|(b+c)² ERAMPLE 25 Prove that a² a² (c + a)? = 2abc (a + b+c) %3D (a + b)? [HSB 1993 C, 2001, PSB 1995, 97, J&K 1995, CBSI
other
telegram-61838
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
Picture question - class 12 - chemistry
chemistry
class12
asked
Apr 5, 2020
by
sonikhushboo945
1
answer
(chatquestion)...7. The domain of definition of the function (x) = log32log,2log,logx is %3D ((a) (e)-) (1) (0, ) (2) 0, TC TC (3) 4 (4) 4....(Plz give reason or working)
other
telegram-61833
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...24 7 moles of tetra atomic non-linear gas A at 10 atm and T K are mixed with 6 moles of another gas B т K and 5 atm in a closed vessel without energy at 3 transfer with surroundings. If final temperature of 5T K then, gas B is mixture was (b) diatomic (a) monoatomic (d) tetraatomic (c) triatomic bridisation of
other
telegram-61830
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...In the circuit shown in the figure R = 50 Q, F. = 253 V and E2 = 25/6 sin(@f) V, where %3D %3D 0= 100 TS. The switch is closed at t = 0 and remains closed for 14 min, then it is opened. nerical openi (a) The amount of heat produced in the resistor is 63000 J (b) The amount of heat produced in the resistor is 7000 J () If total of heat produced is used to heat 3 kg of water at 20°C, the final temperature will be 25°C E, E2 of the s (d) The value of direct current that will produce same amount of heat in same time through same resistor will be 1.5 A of the s 9. Chooso tl SI
other
telegram-61828
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...20 20 The value of >)t tan- is: j=1 i=1 1 200 Tt 2 50 t 3 150 Tt 4 100 Tt...(Please solve this question)
other
telegram-61825
asked
Apr 5, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...11. The range of the function y = f(x) if (34)* + (34) = 34 equals %3D (1) (-00, -1) (2) (-00, 1) (3) (-0o, 1] (4) (1, o)
other
telegram-61823
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
Oxidation number of p in PO4 3-
chemistry
class11
asked
Apr 5, 2020
by
ddchavhan01
1
answer
A closed container has excess of CaCO3 and BaCO3. The Kp for the equilibriu
chemistry
class11
asked
Apr 5, 2020
by
lrajkumar990
1
answer
Picture question - class 12 - math
math
class12
asked
Apr 5, 2020
by
keerthana.urlam
0
answers
Picture question - class 12 - math
math
class12
asked
Apr 5, 2020
by
keerthana.urlam
0
answers
Picture question - class 12 - math
math
class12
asked
Apr 5, 2020
by
keerthana.urlam
0
answers
Curved surface area of a cylinder is 16\pi cm2, radius is 4cm, then find it
math
class10
asked
Apr 5, 2020
by
rathinasamygayathri2004
1
answer
A five digit number divisible by 3 is to be formed using the numericals 0,
math
class11
asked
Apr 5, 2020
by
15goeldhruv
1
answer
In a test +5 marks are given for every correct answer and -2 are given for
math
class7
asked
Apr 5, 2020
by
kohligagan022
1
answer
Picture question - class 7 - math
math
class7
asked
Apr 5, 2020
by
muralilalith1
1
answer
(chatquestion)...Find C.O.M. of the given combination 1. r=Kg/m² %3D
other
telegram-61815
asked
Apr 5, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...An under water swimmer sends a sound signal to the surface. It produces 5 beats/sec when compared with fundamental tone of a pipe of 20 cm length closed at one end. What is (1) y 16. (2) wavelength of sound in water. - 1500 m/sec, V (take V_ (1) 3.3 m or 3.37 m _ - 360m/sec) (2) 4.4 m or 4.47 m water (4) 1m or 1.7 m (3) 2.5 m or 2.7 m VTARGET AYNGCDUE
other
telegram-61807
asked
Apr 5, 2020
by
balaji.thirumalai
1
answer
If the sum of coefficients of is 6561 then the greatest coefficient is
math
class12
asked
Apr 5, 2020
by
dharavathsaikumar897
1
answer
Picture question - class 12 - chemistry
chemistry
class12
asked
Apr 5, 2020
by
msaikiran782
0
answers
(chatquestion)...Ostep and then succinyl-CoA. In the remaining steps of citric acid cycle, succinyl-CoA is oxidised to OAA allowing the cycle to continue. During the conversion of succinyl-CoA to succinic acid a molecule of GTP is synthesiscd. This is a substrate level phosphorylation.?/In a anboxylation akveac. sofylationOupled reaction GTP is converted to GDP with the simultaneous synthesis of ATP from ADP. Also there are three points in the cycle where не NAD* is reduced to NADH+ H* and one point carbo where FAD* is reduced to FADH,. The tovitabue detoberfastin continued oxidation of acetyl CoA via the TCA cycle requires the continued replenishment of
other
telegram-61803
asked
Apr 5, 2020
by
balaji.thirumalai
0
answers
Torque is minimum when the plane of the coil is
physics
class12
asked
Apr 5, 2020
by
kamalgautam0512
1
answer
A man cleaning a floor pulls a vacuum cleaner with a force of magnitude F =
physics
class5
asked
Apr 4, 2020
by
nabeellrm
1
answer
(chatquestion)...Ous 3 Thaenin's theonem i tnd the current is lon belaw:- Rafsi320 yon in he ehauit ghren 602...(Solve)
other
telegram-61798
asked
Apr 4, 2020
by
balaji.thirumalai
1
answer
Two balls A and B are thrown vertically upwards from the same location on t
physics
class12
asked
Apr 4, 2020
by
atharva.h.jadhav
1
answer
Examination of blood of a person suspected of having anaemia, shows large,
biology
class12
asked
Apr 4, 2020
by
johnknox9345797750
1
answer
(chatquestion)...(7, Select the correct statement(s) regarding the solution culture techniques. (a) Successful hydroponic culture requires a large volume of nutrient solution or frequent adjustment of the nutrient solution to prevent roots from producing radical changes in nutrient concentrations and pH of the medium. (b) In nutrient film growth system, plant roots lie on the surface of a trough, and nutrient solutions flow in a thin layer along the trough over the roots. (c) In aeroponics technique, plants are grown with their roots suspended in air while being sprayed continuously with a nutrient solution. (d) All of these
other
telegram-61791
asked
Apr 4, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...tan x dx (sec x + tan x)
other
telegram-61788
asked
Apr 4, 2020
by
balaji.thirumalai
1
answer
Calculate the compression of the spring at the moment when Kinetic energy o
physics
class12
asked
Apr 4, 2020
by
bharatikhatua611
1
answer
Calculate the Brewster's angle for a glass slab ( refractive index =3/2) im
physics
noclass
asked
Apr 4, 2020
by
ruchikarawal07
1
answer
(chatquestion)...(3) 1:4 (4) 4 12. A wave represented by the equation y = acos(kx- ot) is superposed with another wave to form a stationary wave such that the point x = 0 is a node. The equation for the other wave is (1) asin(kx + wt) (2) -acos(kx + ot) (3) -acos(kx – of) (4) -asin(kx – ot)
other
telegram-61783
asked
Apr 4, 2020
by
balaji.thirumalai
1
answer
The second ionization energy of Li, Be, B, C follow
chemistry
class12
asked
Apr 4, 2020
by
nanireddym546333
1
answer
Picture question
noclass
asked
Apr 4, 2020
by
amit84ridhi
0
answers
which condition wire ab can perform simple harmonic motion
physics
class12
asked
Apr 4, 2020
by
farhankareem941
1
answer
(chatquestion)...finition 2 AOP circle and cut off as, BLATION BETWEEN DEGREES AND RADIAN GAand eutoff an ton the drle e duce AO to meet Twesador a de wish centre Oandradtheer Let Ateapo 1 radian n d length egual to the radnesof the circde The AOB-a straight angle-2 right angles m e ares subtending them We Amow that the angles at the centre of a circle are proportional them. are AP arc APB LAOP 2right angles Circumference) are APB rightangles 2- Fig. 4.11 180° Hence, One radian = 180° → n radians = 180°. REMARK I Clearly, arc (APBQA) = 2 nr. So, the measure of angle made by this arc at this centre O of Om pelr the measure of this angle is the measure of one revolution i.e. 360°. 2nradians = 360° = T radians =180° 2nr radians i.e. 2n radians. the circle is fre of the unit circle shown in Fig. Зп radians. 3 Sinceone complete revolution subtends an angle of 2n radians at (27) 4 %3D =(2)= t radians and, 4AOD : are integral multiples of All integral multiples of 2 ZAOB ==x2n =" radians, LAOC= are called the a Thus, quadrant angles ngles. a constana
other
telegram-61771
asked
Apr 4, 2020
by
balaji.thirumalai
0
answers
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