JEE(ADVANCED) вЂ“ 2014
Concerns with Answers
PART вЂ“ 1 PHYSICS
SECTION вЂ“ 1 (One or More Than One Choices Correct Type)
This section consists of 10 multiple choice type questions. Each question provides four selections (A), (B), (C) and (D) out of which More than one THAN ONE are correct. At time рќ‘Ўрќ‘Ў sama dengan 0, terminal A in the circuit proven in the determine is attached to B by a keyand a great (рќњ”рќњ”рќњ”рќњ”), with рќђјрќђј0 sama dengan 1Aand П‰ = 500 rad s-1 starts moving in that with alternating current рќђјрќђј(рќ‘Ўрќ‘Ў) = рќђјрќђј0 cosвЃЎ
the first direction displayed in the figure. At t =
, the key is switched via B to D. Today
onwards simply A and D will be connected. An overall total charge Q flows in the battery to charge the capacitor totally. If C=20ВµF, R= twelve О© plus the battery is ideal with emf of 50V, identify the correct statement (s).
(A) Magnitude of the maximum
(B) The current
demand on the capacitor before рќ‘Ўрќ‘Ў = 6рќњ”рќњ” is you Г— 10в€’3 C. 7рќњ‹рќњ‹
in the kept part of the outlet just before рќ‘Ўрќ‘Ў = 6рќњ”рќњ”is clockwise.
Soon after A can be connected to G, the current in R is definitely 10A.
(D) Q = 2 Г— 10в€’3 C.
Answer (C) and (D)
A light source, which emits two wavelengths рќњ†рќњ†1 sama dengan 400 рќ‘›рќ‘›рќ‘›рќ‘› and рќњ†рќњ†2 = six-hundred рќ‘›рќ‘›рќ‘›рќ‘›, is employed in a Young's double slit experiment. In the event that recorded perimeter widths for рќњ†рќњ†1 andрќњ†рќњ†2 areрќ›Ѕрќ›Ѕ1 andрќ›Ѕрќ›Ѕ2 В© volume of fringes to them within a range yon a single side of the central maximum are m1 and m2, respectively, then
(A)рќ›Ѕрќ›Ѕ2 > рќ›Ѕрќ›Ѕ1
(B)рќ‘љрќ‘љ1 > рќ‘љрќ‘љ2
the central maximum, 3rdmaximum of О»2 overlaps with 5th the least О»1
angular separation of fringes for О»1 is definitely greater than О»2
Answer: (A), (B) and (C)
1 end of any taut line of span 3m along the x axis is set at x=0. The speed in the waves in the string is definitely 100 рќ‘љрќ‘љрќ‘ рќ‘ в€’1. The other end with the string is usually vibrating inside the y path so that standing waves are set up in the string. The possible waveform(s) of these immobile waves is(are)
(B)рќ‘¦рќ‘¦(рќ‘Ўрќ‘Ў) sama dengan рќђґрќђґ trouble cos
(C) рќ‘¦рќ‘¦(рќ‘Ўрќ‘Ў) sama dengan рќђґрќђґ desprovisto
(D) рќ‘¦рќ‘¦(рќ‘Ўрќ‘Ў) = рќђґрќђґ sin
(A)рќ‘¦рќ‘¦(рќ‘Ўрќ‘Ў) = рќђґрќђґ bad thing
Answer: (A), (C) and (D)
A parallel dish capacitor contains a dielectric slab of dielectric constant T between it is plates that covers 1/3 of the part of its discs, as proven in the physique. The total capacitance of the capacitor is C while those of the portion with di-electric in between is C1. When the capacitor can be charged, home plate area covered by the di-electric gets charge Q1 and the rest of the place gets impose Q2. The electric field in the di-electric is E1 and that in the other part is E2. Choose the correct option/options, ignoring edge results.
three or more
Answer: (A) and (D)
Letрќђёрќђё1 (рќ‘џрќ‘џ), рќђёрќђё2 (рќ‘џрќ‘џ) and рќђёрќђё3 (рќ‘џрќ‘џ) be the respective electric power fields at a distance r coming from a point charge Q, an infinitely lengthy wire with constant thready charge density О», and an endless plane with uniform surface area charge denseness Пѓ. If рќђёрќђё1 (рќ‘џрќ‘џ0 ) sama dengan рќђёрќђё2 (рќ‘џрќ‘џ0 ) = рќђёрќђё3 (рќ‘џрќ‘џ0 ) for a given distance r0, in that case 5.
(A)рќ‘„рќ‘„ = 4рќњЋрќњЋрќњЋрќњЋрќ‘џрќ‘џ02
(B)рќ‘џрќ‘џ0 sama dengan
(C) рќђёрќђё1 (рќ‘џрќ‘џ0 вЃ„2)= 2рќђёрќђё2 (рќ‘џрќ‘џ0 вЃ„2)
(D)рќђёрќђё2 (рќ‘џрќ‘џ0 вЃ„2)=4рќђёрќђё3 (рќ‘џрќ‘џ0 вЃ„2)
A student is performing an experiment using a resonance line and a tuning fork of regularity 244рќ‘ рќ‘ в€’1. He is advised that the air flow in the tube has been substituted by one more gas (assume that the steering column remains stuffed with the gas). If the bare minimum height when resonance occurs is (0. 350 В± 0. 005) рќ‘љрќ‘љ, the gas inside the tube is definitely
(Useful information: в€љ167рќ‘…рќ‘…рќ‘…рќ‘… = 640 рќђЅрќђЅ1вЃ„2 moleв€’1 2; в€љ140рќ‘…рќ‘…рќ‘…рќ‘… = 590 рќђЅрќђЅ1вЃ„2 moleв€’1 2 . The molar twelve
masses Min grams get in the options. Take the ideals of пїЅ for each gas as offered there. )
(A)Neon рќ‘Ђрќ‘Ђ sama dengan 20, пїЅ
(B) Nitrogen рќ‘Ђрќ‘Ђ = 28, пїЅ
(C) Oxygen рќ‘Ђрќ‘Ђ = thirty-two, пїЅ
(D)Argon рќ‘Ђрќ‘Ђ =...