Physics question and answers for August 20, 2024
- Q 24 Two concentric and coplanar circular coils have radii a and b a as shown in figure Resistance of the inner coil is R Current in the outer coil is...
- Q Question 30 In the following figure the diodes which are forward biased are A B A B and D C only C and A R and D SV 10V R...
- Q Charge is uniformly distributed with volume charge density p inside a very long cylinder of radius R If the potential difference between the surface and the axis of cylinder is...
- Q A piece of wood is floating in water kept in a 34 bottle The bottle is connected to an air pump Neglect the compressibility of water If more air is...
- Q SolveLancer Test Consider these statements i The reason of thermal expansion is asymmetry in potential energy curve ii Coefficient of expansion of invar is very high iii All specific heats...
- Q The figure below shows an initially stationary block of mass m on a floor A force of magnitude F 0 530mg is then applied at upward angle 8 24 a...
- Q A long current carrying wire having current Iis placed along z axis directed outside the plane Point A B and Care shown in figure Choose the correct options a 0...
- Q 4 0 12 15 Two exactly similar wires of steel and copper are stretched by equal forces If the total elongation is 2 cm then how much is the elongation...
- Q 175 A jet air plane travelling with a speed of 500 km h ejects its products of combustion with a speed of 1500 km h relative to the jet plane...
- Q A particle moves along x axis as x t t 2 t 2 Which of the following is true A The initial velocity of particle is 4 B The acceleration...
- Q T A particle starting from the origin 0 0 moves in a straight line in the x y plane Its co ordinates at a later time are 3 3 The...
- Q A steel wire of length 20 cm and uniform cross section 1 mm is tied rigidly at both the ends The temperature of the wire is altered from 40 C...
- Q 29 A charged particle is placed at the centre of cube o length L ABCDEFGH Another same charge q is placed at a distance L from O Then the electric...
- Q 3 31 In the circuit shown in figure 3 387 the voltmeter is having a resistance 400052 Find the percentage error in reading of this voltmeter AI 5000 300V 40000...
- Q 7 12 SolveLancer Test A body of mass m moving at velocity u collides with a body of mass m which is initially at rest The second body is moving...
- Q 3 tan 1 4 4 tan 2 38 A man moves on a horizontal road towards east at a speed of 1 km h and the rain appears to him...
- Q Gravitation 39 3 An artificial satellite is moving around earth in a circular orbit with speed equal to one fourth the escape speed of a body from the surface of...
- Q A person is throwing two balls into air one after another He throws the second ball when first ball is at highest point If he is throwing one ball every...
- Q lo d b Figure 4 48 Coaxial cable with off centered inner surface of the outer conductor for Problem 4 37 4 38 Force and torque on a triangular current...
- Q Two beams A and B of plane polarized light with mutually perpendicular planes of polarization are seen through a polaroid From the position when the beam A has maximum intensity...
- Q 126 A proton accelerated through a potential dif ference of 100V has de Broglie wavelength 20 The de Broglie wavelength of an a par ticle accelerated through 800V is 20...
- Q move apparent frequency equal to 11 12 of the original frequency 1 V 2 2 2V 3 V 4 4 V 11 31 A whistling engine is approaching a stationary...
- Q the equation of trajectory of a particle in bx2 where a and b vertical plane is y ax are positive constants then angle of elevation of highest point from the...
- Q A spring of force constant k is cut into lengths of ratio 1 2 3 They are connected in series and the new force constant is k Then they are...
- Q Three equal negative charges of magnitude 9 each are at the vertices of an equilateral triangle of side d How much work will have to be done by an external...
- Q A particle is projected from horizontal ground at some angle such that its horizontal component is ux and vertical component is uy and luxl luyl 20 m s If maximum...
- Q 4 t and t 3 t and t Which of the following velocity time graphs 12 shows a realistic situation for a body in motion 12 I 3 1 1...
- Q charge Q is of opposite polarity to that of q 8 When no current passes through a conductor choose which one of the following is incorrect 1 The average velocity...
- Q A swimmer can swim in still water at a ran If he swims in a river flowing at 3 0 km h and keeps hi direction with respect to water...
- Q The graph shown below shows variation of de Broglie wavelength A versus where Vis accelerating potential for three charged particles of equal charges but different masses B A OMA MB...
- Q I think the correct answer should be 4th option but the b ook says 2nd Please tell me if I am wrong and please expl ain the question properly to...
- Q View In English An apparatus is connected to an ideal battery as shown in figure For what value of current power delivered to the apparatus will be maximum apparatus 42...
- Q The variables x and y are related by the equation Sy 2 x 20 where h is a constant Diagram 5 shows the straight line MN obtained by plotting xy...
- Q A B Two conducting rings A and B are placed in a time varying magnetic field Both are made of identica wires and the radius of A is twice that...
- Q 2 7 Figure shows a small wheel fixed coaxially on a bigger one of double the radius The system rotates about the common axis The strings supporting A and B...
- Q It will rer Suppose the Saturn rings consist of football size particles orbiting in circular orbits If the maximum speed of these particles is 1 05 times of the minimum...
- Q AB and CD are fixed conducting smooth rails placed in a vertical plane and joined by a constant current source at its upper end PQ is a conducting rod which...
- Q The waves of 600 m wave length are incident normally on a slit of 1 2mm width The value of diffraction angle corresponding to the first minima will be in...
- Q CP Electromagi Magnetic flux in weber linked with a closed circuit of resistance 10 ohm varies with time t in seconds as 6 5 4t 1 The induced electromotive force...
- Q Three identical coils A B and C are placed coaxially with their planes parallel to each other The coil A and C carry equal currents in opposite direction as shown...
- Q Energy is stored in the choke coil in the form of 1 Heat 3 Magnetic energy 2 Electric energy 4 Electro magnetic energy 004 H than work done by source...
- Q OR Write the expression for speed of electromagnetic waves in a medium of electr permittivity and magnetic permeability u 22 An a particle and a proton are accelerated th
- Q Q 2 A fixed long thin wire carrying current I lies along the x axis A fixed square loop of side length a is placed on the xy plane so...
- Q The displacement of two identical particle executing SHM are represented by equ 8 sin 10t 6 and x 5 sin wt For what value of w energy of both the...
- Q 2 3 weber 0 5 weber B Bo p 0 02 cos 100nt weber turns and number of turns is 50 in the coil the maximum induced emf is 4...
- Q The path of a projectile thrown vertically upwards is as as shown Select incorrect statement Question Type Single Correct Type 1 B C At D 2 time taken from A...
- Q D 1 2 2 1 2 An ideal gas is compressed to half its initial volume by means of several processes Which of the process results in the maximum work...
- Q Two distant stars X and Y are observed in the sky Star X emits blue light whereas Star Y emits red light Which of the following conclusions can you draw...
- Q 1 30 k Assertion In adiabatic process change in internal energy is equal to work done on gas Reason In adiabatic process no heat exchange with surrounding 1 If both...
- Q Very Short Answer Type Questions 1 According to the New Cartesian Sign Convention for mirrors what sign has been given to the focal leng of 1 a concave mirror ii...
- Q The torque on a bar magnet due to the earth s magnetic field is maximum when the axis of the magnet is O Perpendicular to the field of the earth...
- Q A particle is confined to move along x axis has a wave function y Cx between x 0 and x 1 0 v 0 elsewhere The value of the constant...
- Q A body of mass m was slowly pulled up the hill by a force F which at each point was directed along the tangent of the trajectory All surfaces are...
- Q What should be the pressure inside a small ait bubble of 0 1 mm radius situated just below the water surface Surface tension of water 7 2 10 N m...
- Q 2R he two ends of a uniform thin rod of length and of mass 2 kg can move without friction along a fixed vertical circular path of radius R The...
- Q Fig shows a horizontal solenoid connected to a battery and a switch A copper ring is placed on a frictionless track the axis of the ring being along the axis...
- Q 2 less than g Two identical coils A and B are arranged coaxially as shown in the figure and the sign convention adopted is that the direction of currents are...
- Q Example 65 Round off the following numbers as indicated 1 18 35 upto 3 digits iii 18967 upto 3 digits v 248337 upto 3 digits vii 101 55 x 106...
- Q Q 53 Heat produced in a current carrying conducting wire is H I Rt it percentage error in I R and t is 2 4 and 2 respectively then total...
- Q Consider a uniform spherical charge distribution of radius R centred at the origin O In this distribution a spherical cavity of radius R2 centred at P with distance OP a...
- Q An intense light source radiate uniformly in all directions At a distance of 5 0 m from the source the radiation pressure on the perfectly absorbing surface is 9 0...
- Q 21 A particle of charge q is moving with velocity v in the presence of crossed electric field E and magnetic field B as shown in the figure i Write...
- Q c 3 Volt d 4 2 Volt 35 A current of 6A enters one corner P of an equilateral triangle PQR having 3 wires of resistances 20 each and leaves...
- Q experiment the slit separation d is 0 3 mm and the screen distance D is 1 m A parallel beam of light of wavelength 600 nm is incident on the...
- Q momentum of the system If one object within the system loses momentum it is gained by the other object within the system The combined momentum of both objects would be...
- Q A uniform rod AB of length L 2 3 m and weight W 124 N acting through the centre of the rod is supported by two vertical strings at its...
- Q U shaped block of mass M 89 5 kg is carrying a smaller magnetic block of mass M 48 2 kg inside of it Block 1 experiences a force Fi...
- Q Fill in the table below each column of which refers to a spherical mirror and real object Distances are in centimeters if a number has no plus or minus sign...
- Q The circuit diagram shows a source of emf 10 V having an internal resistance of 2 50 connected to an ideal ammeter The jockey can be slided to different points...
- Q In the crystal structure of Fe O Fe and Fe occupy collectively 1 50 tetrahedral and 50 octahedral voids 2 25 tetrahedral and 75 octahedral voids 3 12 5 tetrahedral...
- Q A force F k yi xj where kis a positive constant acts on a particle moving in the x y plane Starting from the origin the particle is taken along...
- Q A satellite revolves in an equatorial plane in west to east direction around the earth with a period of 8 hrs At an instant it is observed vertically overhead a...
- Q 97 A cylindrical piston of mass M slides smoothly inside a long cylinder a certain mass of gas The cylinder is kept with its axis horizontal closed at one end...
- Q An ideal spring with spring constant kis hung from the ceiling and a block of mass M is attached to its lower end The mass is released with the spring...
- Q A rod of length 10 cm made up of conducting and non conducting material shaded part is non conducting The rod is rotated with constant angular velocity 10 rad sec...
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