Physics question and answers for August 19, 2024
- Q Four capacitors are joined as shown in the figure The capacity of each capacitor is 8uF Equivalent capacitance between A and B is A 1 2 F 3 16 F...
- Q 8 A circuit consists of five identical conductors as shown in figure The two similar conductors are added as indicated by the dotted lines The ratio of resistances before and...
- Q In the figure shown a block of weight 10 N resting on a horizontal surface The coefficient of static friction between the block and the surface 0 4 A force...
- Q NAU AW in a adiabatic process 3 AU AW in a adiabatic process 4 AU AW in a isothermal process If C and C denote the specific heats per unit...
- Q A B ring along the axis of the ring and it passes through the ring N S B A are right left faces respectively 1 when magnet goes towards the...
- Q A 30 cm by 40 cm rectangular loop rotates at 130 rad s in a magnetic field 0 06 Wb m normal to the axis of rotation If the loop...
- Q uniform magnetic field of intensity directed into the plane of the paper exists in the cylindrical region of radius 1 m A uniform loop of resistance 100 olded in the...
- Q A particle of mass m is thrown with speed vo at an angle 30 with horizontal The angular momentum about the point of projection when the particle is at the...
- Q Find the value of a for which the vector A is solenoidal A 2xi 2ayj 4zk ans
- Q A force is given as F a B vis velocity Then dimensional e 1 ML T 2 3 M L T 4 where F is force formula of a B...
- Q 5 points An optical power of 0 5mW is initially launched into an optical fibre The power level is found to be 0 0199mW after 4 km The attenuation coefficient...
- Q 48 A circuit consists of five identical conductors as shown in figure The two similar conductors are added as indicated by the dotted lines The ratio of resistances before and...
- Q As shown in figure two vertical conducting rails separated by distance 1 0 m are placed parallel to z axis At z 0 a capacitor of 0 15 F is...
- Q A thermodynamic system undergoes cyclic process ABCDA as shown in figure The work done by the system in the cycle is NEET 2014 1 RY 2 2P V P 3Po...
- Q Two particles are in SHM with same amplitude A and same angular frequency o At time t 0 on A A at x and other is at x Both are...
- Q The excess pressure inside an air bubble of radius r just below the surface of the water is P The pressure inside a drop of the same radius just outside...
- Q Consider the conservation of energy equation below AK AU AE int W Q TMW TMT TET TER A ball of mass m falls from a height h to the floor...
- Q on ng 29 The solubility of a specific non volatile salt is high at 25 C If 2gm 4gm and 6gm of the salt added to 100gm at 25 C...
- Q 4 If Assertion Reason both are false Two chambers containing m g and m g of a gas at pressure P and P respectively are put in communication with each...
- Q An ideal gas is initially at temperature T and volume V Its volume is increased by AV due to an increase temperature AT pressure remaining constant The quantity 8 AV...
- Q molecule of the gas is m Which of the following gives the density 3 P KTV 1 P KT 2 Pm KT 4 mkT The temperature inside a refrigerator is...
- Q If identical charges q are placed at each corner of a cube of side b then electric potential energy of charge q which is placed at centre of the cube...
- Q The number of photons from a light of wavelength 5000 required to do one joule of work is a 1 25 x 1020 m b 1 5 x 1020 m...
- Q 33 If a steady current I is flowing element ABC Choose the correct relationship 2r B 1 2 7 1 2 C a VAB 2VBC b Power across BC is...
- Q A solid dielectric material has 4 x 1028 atoms per unit volume if it shows an electronic polarizability of 1 5 x 10 40 Fm then the dielectric constant of...
- Q 31 The magnetic flux near the axis and inside the a core solenoid of length 60 cm carrying current I 1 57 x 10 Wb Its magnetic moment will cross...
- Q A stretched wire emits a fundamental note of 256 Hz Keeping the stretching force constant and reducing the length of wire by 10 cm the fundamental frequency becomes 320 Hz...
- Q A particle under the action of a SHM has a period of 3 s and under the effect of another it has a period 4 s What will be its...
- Q In a coil of resistance 102 the induced current developed by changing magnetic flux through it is shown in figure as a function of time The magnitude of change in...
- Q A conducting ring lies fixed on a horizontal plane If a charged nonmagnetic particle is released from a point on the axis at some height from the plane then 1...
- Q 4 If Assertion Reason both are false A closed vessel explodes at 15 atm pressure If temperature of the vessel is 300 K at 10 atm pressure then find at...
- Q The flow speeds of air on the lower and upper surfaces of the wing of an aeroplane are v and 2 v respectively The density of air is p and...
- Q P m P m P m P m P m P m When an ideal monoatomic gas is heated at constant pressure the fraction of the heat energy supplied which...
- Q 3 4 C 17 Consider the combination of resistors as shown in figure and pick out the correct statement R wwww R A www R6 wwwwww R R www www...
- Q The temperature entropy diagram of a reversible engine cycle is given in the figure Its efficiency is AIEEE 2005 2T S 2S S 4 2 N
- Q The following questions consist of two statements each printed as Assertion and Reason While answering these questions you are required to choose any one of the following responses 11 A...
- Q The volume V of a monoatomic gas varies with its temperature T as shown in the graph The ratio of work done by the gas to the heat absorbed by...
- Q The half life of a radioactive isotope X is 25 years It decays to another element Y which is stable The two elements X and Y were found to be...
- Q A vibrator of mass 1 g is acted upon by a restoring force of 104 N m of displacement a retarding force of 4 Ns m and a driving force...
- Q A magnet of magnetic moment 2JT 1 is aligned in the direction of magnetic field of 0 1 T What is the net work done to bring the magnet normal...
- Q c 1 m s A body of mass m 3 513 kg is moving along the x axis with a speed of 5 00 ms The magnitude of its momentum...
- Q 1 C 3 C 5 2 C 4 C 6 3 C 3 C 2 Hydrogen gas is filled in a container of volume 20 litre Average translational kinetic energy...
- Q A three level laser emits a light of wavelength 4500 The temperature at which the ratio of the population reduces to half is a 46244 K b 37800 K c...
- Q In Young s experiment the ratio of maximum to minimum intensities of the fringe system is 4 1 The amplitudes of the coherent sources are in the ratio RPMT 1996...
- Q 1 To determine the coefficient of friction between a rough surface and a block the surface is kept inclined at 45 and the block is released from rest The block...
- Q 9 is projected horizontally from top of a tower If v is the velocity at any instant and radius of curvature of the path of the particle at that instant...
- Q 2 A block of mass M sits on an inclined plane and is connected via a massless string through a massless pulley A that slides without friction on the plane...
- Q Potential energy sinusoidal curve is shown graphically for a particle The potential energy does not depend on y and z co ordinates For range 0 x 2 maximum value of...
- Q A firefighter a distance d 10 0 m from a burning building directs a a stream of water from a fire hose at angle 0 60 If the initial spe...
- Q In Young s double slit experiment the distance between slits and the screen is 1 0 m and monochromatic light of 600 nm is being used A person standing near...
- Q A conductor in the shape of a square loop of edge length 0 400 m carries a current I 10 A as in the figure Calculate the magnitude and direction...
- Q An electron and a proton enter region of uniform magnetic field in a direction at right angles to the field with the same kinetic energy They describe circular paths of...
- Q In damped oscillations the amplitude after 50 oscillations is 0 8 ao where ao is the initial amplitude then the amplitude after 150 oscillations is Question Type Single Correct Type...
- Q Two identical photocathode receive light of frequencies f and f2 If the velocities of the photoelectrons of mass m coming out are respectively v and v then Question Type Single...
- Q A particle of mass m confined between 0 x l has a probability 64 of occupying the ground state and a probability 36 of occupying the first excited state The...
- Q A whistle emitting a sound of frequency 450 Hz approaches a stationary observer at a speed of 33 m s Velocity of sound is 330 m s The frequency heard...
- Q In the arrangement shown in figure coefficient of friction between the two blocks is 2 force of friction acting between the two blocks is g 10 ms F 20N 2kg...
- Q What is the relation between temperature of a body and the wavelength of its emitted radiation at its maximum emissive power Select one a none b as temperature of a...
- Q An oil drop of mass 50 mg and of charge 5 C is just balanced in air against the force of gravity Calculate the strength of the electric field required...
- Q The engine of a train passes an electric pole with a velocity u and the last compartment of the train crosses the same pole with a velocity v Then find...
- Q Focal length of an equiconvex lens is 20 cm The refractive index of material of the lens is 1 5 Now one of the curved surface is silvered At what...
- Q Two short magnets placed along the same axis with their like poles facing each other repel each other with a force which varies inversely as Square of the distance Cube...
- Q 3 A time varying magnetic field is present in a cylindrical region of radius R as shown in the figure A positive charge q is taken slowly from P to...
- Q 1 mole of H gas is contained in a box of volume V 1 00 m at T 300 K The gas is heated to a temperature of T 3000...
- Q A convex mirror forms the image of an object such that the distance between the object and image is 60 cm and the magnification produced is 1 4 The focal...
- Q A particle of mass 1 kg executing simple harmonic motion of period 20 s crosses the mean position at t 0 with velocity cm s A the maximum acceleration of...
- Q Consider a damped harmonic oscillator whose mass m 0 05 kg k 5 0 N m and damping constant b With initial conditions xo 0 01 m p 0 A...
- Q 7 Explain the linear velocity of a particle perform ing circular motion OR Derive the relation between the linear velocity and the angular velocity of a particle performing 2 marks...
- Q Find the minimized solution for the following using Kmap F 0 1 4 5 9 11 14 15 Answer the following Number of octets and quads and pairs in the...
- Q An ideal gas goes from state A to state B via three different processes as indic If Q Q Q indicate the heat a absorbed by the gas along the...
- Q Tritium t 2 12 33 y is mostly produced for military purposes If we had stopped producing tritium in 1960 with a 2500 kg stockpile how much would be left...
- Q A wire of length is used to form a circular coil Th magnetic field at its centre for a given current in is minimum if the coil has 1 4...
- Q 1 2 x 106 N m 2 3 x 10 N m 3 4 x 10 N m 4 5 x 100g ice at 0 C is put in water...
- Q A 2m string has tension 1N is fixed at both end and its is vibrating is its third harmonic with antin amplitude 3cm and frequency 100Hz then 32 Possible stationary...
- Q Calculate the ratio of the velocity of sound in a gas to the rms velocity of its molecules if the molecules are i monatomic and ii diatomic Ans 0 75...
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