Physics question and answers for July 09, 2024
- Q A point moves with retardation along a circle of radius R so that at any moment Ram and Shyam are walking on two perpendicular tracks with speeds 3m s and...
- Q et N denote the set of all natural numbers Define two binary relations on Nas x y e Nx N 2x y 10 and R x y e Nx N...
- Q What amount of heat in kJ is required to convert 27 6 g of an unknown solid MM 83 21 g mol at 5 00 C to a liquid at...
- Q Q2 A sphere of diameter D which is at a uniform temperature of T is suddenly removed from a furnace and suspended in a large room of air at uniform...
- Q Q 29 A large spherical mass M is fixed at one posi tion and two identical point masses m are kept on a line passing through the centre of M...
- Q 8 A beam of light has a small wavelength spread 82 about a central wavelength The beam travels in vacuum until it enters a glass plate at an angle 0...
- Q Two identical pendulum A and B are suspended from the same point The bobs are given positive charges with A having more charge than B They diverge and reach at...
- Q 17 The diagram given below is of silicon crystal at 300 K Ec E 0 56 eV EF Ev H E E 0 18 eV From the diagram it can...
- Q Q19 A solid sphere of uniform density and radius 4 units is located with its centre at the origin O of coordi nates Two spheres of equal radii 1 unit...
- Q Match the columns and select the correct option from the codes given below Column l Column Il i Focal length of convex lens ii Object placed between C and F...
- Q 11 A rectangular coil ABCD is placed near a long straight current carrying straight wire as shown What is the net force on the rectangular coil D C 2A 1A...
- Q In a LLyod s mirror set up for interference of waves of frequency 6 x 10 4 1 emitted from point source S Distance SO OA AC are 1 mm...
- Q Two trains A and B of length 400 m each are moving on two parallel tracks wit uniform speed of 72 km h in the same direction with A ahead...
- Q Electric Charges and Fields 1 With a charge g at the centre an imaginary Gaussian sphere is constructed with a radius r The magnitude of intensity of field at any...
- Q A particle is projected from the ground at t 0 so that on its way it just clears two vertical walls of equal height on the ground The particle was...
- Q A wave in a string has an amplitude 2 cm The wave travels in the ve direction of axis with a speed of 128 m s and it is noted...
- Q th 1 The mber of rate of coil is 2019 then the input voltage JEE Main 2019 and current in the primary coil are a 220 V and 10 A...
- Q linder is placed on a horizontal surface particle is projected with speed u and it ses the cylinder by just touching at two points as shown in figure Then the...
- Q D Two cells when connected in series are balanced on 8 m on a potentiometer If the polar one of the cell is reversed they balance on 2 m The...
- Q a X Jn Jn n n There are two long co axial solenoids of same length 1 The inner and outer coils have radii r and r2 and number of...
- Q a 1 0kg mass hangs attached to a spring of length 50 cm the spring stretches by 2 cm The mass is pulled down until the length of the spring...
- Q A convex lens forms the image of an object of same magnification when the object is placed at 10 cm and 20 cm from the lens The focal length of...
- Q Refer to the figure rectangle PQRS represents the cross section of a uniform magnetic field region of 0 2 T An electron is projected at a speed of V 2...
- Q Consider a conical pendulum with a bob of nass 80 kg and length of string 10 m that makes an angle of 5 degrees with the vertical Determine a the...
- Q Two thin wires rings each having a radius R are placed at a distance d apart with their axes coinciding The charges on the two rings are q and q...
- Q A hollow sphere is performing pure rolling then 9 find acceleration of it s centre of mass F M 1 3 6F 5M 2F 3M R Rough 2 3F 5M...
- Q The threshold frequency for a photosensitive metal is 3 3 1014 Hz If light of frequency 8 2 1014 Hz is incident on this metal the cut off voltage for...
- Q For example if a body is having acceleration of 1 m s 2 it means that body is increasing it speed at the rate of 1m s similarly if a...
- Q A fix amount of nitrogen gas 1 mole is taken and is subjected to pressure and temperature variation The experiment is performed at high pressure as well as high temperatures...
- Q An object of mass M is gently placed on a horizontal conveyor belt which is moving with uniform velocity v as shown in the figure The coefficient of static friction...
- Q 6 A circular arc of wire subtends an angle 2 at the centre If it carries a current i and its radius of curvature is R then the magnetic field...
- Q 9192 mg A pendulum bob of mass 80 mg and carrying a charge of 2x 10 8 C is at rest in a horizontal uniform electric field of 20 000...
- Q a 1 5x103 V A 20 Henry inductor coil is connected to a 10 ohm resistance in series as shown in figure The time at which rate of dissipation of...
- Q Phy Section This section contains 35 SINGLE CORRECT TYPE questions Each question has 4 choices 1 2 3 and 4 C When a potential difference Vis applied across a conductor...
- Q UNIVERSAL BOOK DEPOT 1960 1248 Electromagnetic Induction Three solenoid coils of same dimension same number of turns and same number of layers of windings are taken Coil 1 with inductance...
- Q 15 Calculate the weight of lime CaO that can be prepared by heating 200kg of limestone CaCO3 which is 95 pure a 88 4kg b 106 4kg c 65 7kg...
- Q 45 A plano convex lens when silvered on the plane side behaves like a concave mirror of focal length 30 cm However when silvered on the convex side it behaves...
- Q A block of mass m is kept on a wedge of mass M The block and wedge both remain at rest rough The force of friction acting on the wedge...
- Q 20 P Q R S ACB is a smooth quarter circular path of radius R Four forces are acting at a particle placed at A F1 is always horizontal F2...
- Q 9 A passenger train of length 60 m travels at a speed of 80 km hr Another freight train of length 120 m travels at a speed of 30 km...
- Q 4 A current loop consists of two identical semicrcular parts each of radius R one lying in the x y plane and the other in x z plane If the...
- Q c 740 J d 2 enters in a An electromagnetic wave of intensity 50Wm medium of refractive index n without any loss The ratio of the magnitudes of electric fields...
- Q Monochromatic light of frequency is 6 0 1014 Hz produced by a laser The power emitted is 2 x 10 W The number of photons emitted on the average by...
- Q Induction and R are placed iding If R R will be directly MP PET 2001 the circuit The OB I is decreasing An inductor L 100 mH a resistor R...
- Q A wave travelling in the ve x direction having displacement along y direction as 1 m wavelength 1 2 m and frequency of Hz is represented by T a y...
- Q Consider a rubber ball freely falling h 4 9 m onto a horizontal elastic plate Assume that the duration of collision is negligible and the collision with the plate is...
- Q rictionless floor 1 A block of mass M 6 00 kg slides at a constant speed V on a frictionless floor towards a spring fixed to a wall The block...
- Q S 0 05m is kept 10 5T When the around any of its the coil will be NEET 2019 dy current effect is NEET 2019 etic braking in train heater...
- Q 42 A plano convex glass lens 3 2 of radius of curvature R 20 cm is placed at a distance of b from a concave lens of focal length 10...
- Q There are two coils A and B linked through their magnetic flux The self inductance of coil A is 2 mH while that of B is 8 mH When the...
- Q Note Always write your final answers in two decimal places 1 Sky and Blue are lifting some weights inside the gym on a Saturday afternoon They were able to lift...
- Q When light of wavelength is incident oneg surface the kinetic energy of photoelectron is E To increase the KE of the electron to 2E the incident wavelength must be hch...
- Q 20 180 There is a wire of resistance 440 Q The wire can bear a maximum current of 2 A The wire is to be cut into n number of...
- Q is no flow 6 Radius of an air bubble at the bottom of the lake is r and it becomes 2r when the air bubble rises to the top surface...
- Q at 49 Water flows through a frictionless duct with a cross section varying as shown in figure Pressure p points along the axis is represented by LAS 3 AP X...
- Q A uniform disc of mass m can roll without slipping C is the centre of disc and m 3kg k 10 N m The time period of small oscillations is...
- Q 8 Two parallel disks 60 cm in diameter are separated by a distance of 15 cm and completely surrounded by a large enclosure at 100 C The properties of the...
- Q A particle of negative charge q and mass m moving with velocity Vo enters a magnetic field B as shown in the figure The time for which the particles remains...
- Q The binding energy per nucleon for a deuteron and an a particle are x and x respectively The energy Q released in the reaction H H He Q S A...
- Q A photosensitive metallic surface has work function hvo If photons of energy 2hv fall on this surface the electrons come out with a maximum velocity of 4 x 106 m...
- Q For Questions 13 14 A In a diatomic molecule potential energy of two atoms is approximately given by U r 612P where r is the interatomic spacing and A and...
- Q 1 A glass plate u 1 5 of thickness t is placed in front of one of the slits in a double slit experiment What should be the minimum thickness...
- Q A light inextensible straight thread of length 3 2m is placed on a frictionless horizontal floor A small block of mass m 3 kg placed on the floor is attached...
- Q 76 The resistivity of a potentiometer wire is if the area of cross section of the wire is 4cm the current flowing in the circuit is 1A the potential gradient...
- Q 0 Four identical plates of area A and separation d are connected as shown in diagram Each plates of capacitor are in horizontal plane and P Q and R are...
- Q 3 The moment of inertia of a uniform cylinder of length and radius R about its perpendicu bisector is I What is the ratio e R such that the moment...
- Q Monochromatic light of wavelength 667 nm is produced by a helium neon laser The power emitted is 9 mW The number of photons arriving per sec On the average at...
- Q simple harmonic motion is given by y A Asinot Bcoswt Then the amplitude of its oscillation is given by 2 1 Ao A B lo 2 A B ions 3...
- Q 23 A stationary hydrogen atom of mass M emits a photon corresponding to the second line of Lyman series If R is the Rydberg constant the velocity tha the atom...
- Q Two objects are connected to a rope and the rope is hung over a pulley connected to the ceiling as shown in the figure below M1 MOR My The masses...
- Q A person climbs up a stalled escalator in 60 s standing on the same but escalator running with constant velocity he takes 40 s How much time is taken by...
- Q 100 2002 2002 4092 and 5092 are connected as shown in figure The equivalent resistance between points A and B is C 10 2 A www 20 2 209 50...
- Q has half the mass When E becomes peed of the m s m s from origin ith position mx 3 37 If F 2x 3x 2 then select the correct...
- Q hydrogen atom If the ionisation potential in the ground state for hydrogen is 13 6 e V then find the excitation potential of third orbit hit to ground state of...
- Q velocity vector and perpendicular to each other is equal to 1 1 sec 2 2 sec 3 1 5 sec 4 5 sec At any instant of time acceleration and...
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