Physics question and answers for July 24, 2024
- Q S 6R ww V b 9R www VV a 3R 9R V t 7RC Current through the cell at time t is Options ww 3 e 1 7RC V c...
- Q 4 4 15 A satellite of mass 200 kg revolves around a planet of mass 5 x 1030 kg in a circular orbit of radius 6 6 x 105 m...
- Q 9 A satellite is revolving around earth in a circular orbit at a uniform speed v If gravitational force suddenly disappears speed of the satellite will be 1 Zero 3...
- Q 5 A particle is thrown vertically up such that distance travelled by it in 2nd second and 9th second is same Maximum height upto which the particle rises is g...
- Q A heat engine employing a carnot cycle with an efficiency of n 10 is used as a refrigerating machine with the same thermal reservoirs Then its coefficient of performance is...
- Q Matching List Type This section contains 4 multiple choice questions Each question has matching lists The codes for the lists have choices A B C and D out of which...
- Q A uniform circular disc of mass m and radius R is placed on a rough horizontal surface and connected to the two ideal non deformed springs of stiffness k and...
- Q 44 A particle is moving with constant speed 10 m s in x y plane as shown in the figure The magnitude of its angular velocity about origin at this...
- Q A particle of mass m is released on a smooth track in vertical plane which transforms into a circular arc of radius R The reaction force exerted at the bottom...
- Q A ball of mass m is attached to the lower end of a vertical string whose upper end is fixed An identical ball B moving with a velocity vo 6...
- Q Mark the correct statement Escape velocity does not depend on mass of body ii If total energy of a satellite becomes positive it escapes from earth Orbit of geostationary orbit...
- Q A small body of mass m is placed at the top of a smooth sphere of radius R placed on a horizontal surface as shown Now the sphere is given...
- Q A car travels with speed 3 m s 1 for the first half distance of the journey and with speed 6 m s 1 for the remaining half What is...
- Q Charge 2Q and 3Q are given to inner and outer plates of a spherical capacitor having inner radius a and outer radius 2a Total electrostatic potential energy stored in the...
- Q Sri Chaitanya IIT Academy 20 12 15 Sr IPLCO Jee Adv 2011 P2 Q Paper 40 An ideal gas undergoes a reversible cyclic process according to the graph P is...
- Q A block of mass 2 kg is kept on a truck moving with a constant acceleration The height h of the block is 60 cm and its width w is...
- Q Problem 4 4 A load cell Fig 4 40 is formed of a hollow steel cylinder loaded axially The four strain gauges are so connected as to enhance the signal...
- Q A conical container of radius R 1m and height H 5m is filled completely with liquid There is a hole at the bottom of container of area 10 3 m2...
- Q A highly conducting solid cylinder of radius a and length is surrounded by a co axial layer of a material having thermal conductivity K and negligible heat capacity Temperature of...
- Q A rod is kept an angle of 60 with the horizontal by the help of a string in vertical plane The string is now cut at t 0 Find the...
- Q Two blocks A and B of masses 2 kg and 8 kg respectively are kept in contact and pressed against a rough vertical wall by applying a horizontal force F...
- Q 34 A ball is thrown vertically down from a certain height with some speed After rebound with ground it is caught at the same point with same speed at which...
- Q Choose incorrect statement about electric field lines due to a charge configuration The density of field lines at a point represents proportional strength of electric field at that point They...
- Q Network shown in the diagram is part of an electrical circuit The current is 2 A and is decreasing of 2 Als then V V equals 1 2 V XVM...
- Q A liquid is filled in a large container as shown A source S is moving with constant velocity 3v 4 in upward direction A man A is stationary on the...
- Q Infinite number of alternate charges q and q are arranged on a straight line with separation a Find interaction energy of each charge with all others ka O q q...
- Q If n 1 is taken to be reference of the potential energy what will be the kinetic energy in eV of an electro in second excited state in Li 1...
- Q 39 With an ac input from 50 Hz power line the ripple frequency is a 50 Hz in the dc output of half wave as well as full wave rectifier...
- Q A radioactive sample disintegrates via two independent decay processes having half lives T and T2 respectively The effective half life T1 2 1 2 1 2 of the nuclei is...
- Q un object with a height of 0 06 m points below the principal axis it is Inverted and is 0 140 m in front of a diverging lens The focal...
- Q In an isolated Li electron jumps from n 2 to n 1 What is the recoil momentum of the ion in kg m s 1 5 44 x 10 27...
- Q A pan balance has a container of water with an overflow spout on the right hand pan as shown It is full of water right up to the overflow spout...
- Q Determine the wavelength of the first Lyman line the transition from n 2 to n 1 In what region the electromagnetic spectrum does this line lie 1 1 22 x...
- Q 5 Suppose the potential energy between electron and to find velocity and its value will be nh 2kmr 1 V 3 V n h 2xmr oton at a distance r...
- Q ow the marked expression came sir nergy of electron in the hydrogen atom Total Energy of electron in nth orbit e 8 r KE mv 2 and PE 1 e...
- Q 18 If a piece of metal is heated to temperature and then allowed to cool in a room which is at temperature 00 The graph between the temperature T of...
- Q A ring of radius R is rolling without slipping over a fixed surfaces It s linear mass density varies as 1 cos0 as shown At the instant shown centre of...
- Q point fre charge A charge Q is uniformly distributed over a large plastic non conducting sheet The electric field at a point close to the centre of the plate near...
- Q 28 Two charges each equal to q are kept at x a and x a on the X axis A particle q of mass m and charge q is placed...
- Q 9 A mass is released from a height h and its time of fall t is recorded in terms of time period T of a simple pendulum On the surface...
- Q In Young s double slit arrangement slits are separated by a gap of 0 5 mm and the screen is placed at a distance of 0 5 m from them...
- Q The ratio of magnetic moment of an electron to its angular momentum in an atomic orbit will be 2m e 2m 2 E El E
- Q is of be of 23 The of a photocells kept fixed The wavelength of the ligh falling on the cathode is gradually changed The plate current I of photocel varies...
- Q 1 11 Three identically charged small spheres each of mass m are suspended from a common point by insulated light strings each of length 1 The spheres are always on...
- Q placed vertically as shown A point charge Qo is placed at point O at a distance L from its one end Potential energy of charge Qo is equal to B...
- Q Zero Marks in all outer In shown system strings and pulley are frictionless and massless Block A is moving downward with velocity of 7m s which is increasing at a...
- Q Speed of an electron in hydrogen atom in 1st orbit is 2 x 100 m s The velocity of an electron in 3rd orbit doubly ionized lithium is 1 5...
- Q A constant power delivering machine has towed a box which was initially at rest along a horizontal straight line The distance moved by the box in time t is proportional...
- Q Match List I with List II List I a 10 km height over earth s surface b 70 km height over earth s surface c 180 km height over earth...
- Q 3A 4A Read More Two coherent light sources P and Q are at a distance 3A from each other as shown in the figure The distance from Pon the x...
- Q Figure shows three concentric thin spherical shells A B and C of radii R 2R and 3R The shell B is earthed and A and C are given charges q...
- Q 2 Figure shows some energy levels of an atom If the transition E to E gives emission of ultraviolet radiatio which of the following transitions could give infra red radiation...
- Q In the circuit shown 1 and 2 are two ideal sources of unknown emfs Some currentsare shown in some branches of the circuit Potential difference across resistance 60 isVA VB...
- Q The time period of a simple pendulum is given by T 2 g measured value of the length of pendulum is 10 cm known to a 1 mm accuracy The...
- Q A small ball of mass m starts its motion from height h as shown in figure undergoes head on elastic collision with stationary identical mass attached to end of string...
- Q A stone is projected from a balloon which is ascending with a velocity 1 m s The velocity of the stone w r t balloon is 3 2 m s...
- Q An oil drop of radius 2 mm with a density 3 g cm is held stationary under a constant electric field 3 55 105 V m in 3 the Millikan...
- Q A plane electromagnetic wave of frequency 100MHz is travelling in vacuum along the x direction At a particular point in space and time B 2 0 10 T where k...
- Q 3 36 The resistors 40002 and 80002 are connected in series with a 6 volt battery It is desired to measure the current in the circuit An ammeter of 10...
- Q 3 34 A potential difference of 220V is maintained across a 12000 rheostat as shown in figure 3 390 The voltmeter has a resistance of 6000 and point C is...
- Q What will be the average value of energy along one degree of freedom for an ideal gas in thermal equilibrium at a temperature T k is Boltzmann constant 1 KBT...
- Q vii A leaky parallel capacitor is filled completely with a material having dielectric constant K 5 and electrical conductivity o 7 4 x 10 22 m If the charge on...
- Q 22 1 12 second 2 8 second 3 15 second 4 10 second For the corresponding a t graph Draw the v t graph The particles starts from rest 1...
- Q In the resistor network shown in the figure all the resistors are identical and each equal to 102 A current of 1A passes from terminal a to terminal b as...
- Q Example 1 Classify each of the following reactions as combination decomposition displacement or double displacement reactions i 2 KNO3 s 2 KNO s O g ii Zn s 2 AgNO3...
- Q Conducting shell of radius R carrying charge Q another charge Q is placed at 3R distance from centre of shell If the potential at point P due to charge on...
- Q A biconvex thin lens of focal length 30 cm and aperture diameter 10 cm is broken into four identical pieces Two of the pieces are placed in a coordinate system...
- Q Two pulley one 600 mm diameter and other INVO 300 mm diameter are on parallel shaft 3000 mm apart and are connected by a open belt Find the length of...
- Q The figure shows a RC circuit with a parallel plate capacitor Before switching on the circuit plate A of the capacitor was given a charge Q while plate B had...
- Q Ith linear 1 31 A semi circular ring of mass charge density hinged at its centre is placed in a uniform electric field as shown in the figure 1 451...
- Q A capacitor with charge Q on it is connected to an inductor L as shown in diagram at t 0 When the switch is flipped from position 1 to 2...
- Q You place a box of mass m 10 kg against a vertical wall You apply a constant force F to the box where F 200 N and the force is...
- Q Two sound waves of frequencies 100 Hz and 102 Hz and having same amplitude A are interfering A stationary detector which can detect waves of amplitude greater than or equal...
- Q Imagine that the electron in a hydrogen atom is replaced by a muon The mass of muon particle is 207 times that of an electron and charge is equal to...
- Q 8 A wire bent as a parabola y ax is located in a uniform magnetic field of induction B the vector B being perpendicular to the plane x y At...
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