Physics question and answers for July 06, 2024
- Q One of the circuits for the measurement of resistance by potentiometer is shown The galvanometer is connected at point A and zero deflection is observed at length PJ 30 cm...
- Q 1 As shown in the figure below the particle of mass m and charge q will touch the infinitely large plate of uniform charge density o if its velocity v...
- Q Two long line charges of linear charge densities and A respectively are fixed r distance apart as shown Electrostatic force per unit length on it is equal to 1 H...
- Q 0 0 0 200 tls 400 600 ci Hot water from a reservoir maintained at constant temperature is being added at a very slow and constant rate in a calorimeter...
- Q charge densities at point P and Q are op and o respectively If 10 C charge is moved from centre C to point S then S 211 C 1 op...
- Q 1 36 Two steel balls fall freely on an elastic slab The first ball is dropped from a height h and the second from a height h h h T...
- Q 1 A voltage e t 100sin314t is applied to a series circuit consisting of 10 resista 0 0318H inductance and a capacitance of 66 3 F Determine i Expression for...
- Q Two identical balls having like charges and placed at a certain distance apart repel each other with a certain force They are brought in contact and then moved apart to...
- Q 41 There is a set of 4 tuning forks one with lowes frequency vibrating at 552 Hz By using any two forks at a time the beat frequencies heard are...
- Q Two co axial rings of same radius R 10 cm are placed parallel to the y z plane such that x axis is the axis of the rings Ring 1...
- Q A block of mass M 1 6 kg is lying on a plane incline at an angle of 0 37 to the horizontal The coefficient is 0 2 At the...
- Q A motorboat can maintain a constant speed of 22 miles per hour relative to the water The boat makes a trip upstream to a certain point in 27 minutes the...
- Q Solution Take the block as the system The force on it are the figure Find the tension in the string a point i B lower end ii A mid point...
- Q 19 A particle is executing SHM according to equation 4 its displacement at t 2 s is 20 y 10 cos 2rt 10 2 2 m 1 5 2 m...
- Q a A disk of radius 4 having a uniformly distributed charge 6 C is placed in the X Y plane with its centre at a 2 a 5a 0 0...
- Q A ball is released on a smooth plane A of constant length as shown After that it moves smoothly to another smooth incline of inclination 60 Find the angle of...
- Q A uniform magnetic field 20 Texists in a gravity free space all over the space on right side of the shown boundary The given circular arc of radius 2 cm...
- Q A particles moves along a coordinate axis in the positive direction to the right Its position is given by s t t 2 t 8 a Determine the direction the...
- Q Tes a A coil with internal resistance takes 2 5A when connected across 200V 50Hz supply The power consumed by the coil is found to be 450W Find the power...
- Q W t In the system shown in figure the block A is pulled towards right at a constant speed of 1 m s Find speed of block B w r...
- Q les a loop in steady state current I The loop is in air Calculate the magnetic flux density vector at a point P located at the fourth vertex of the...
- Q 3 1 kPa 4 Zero 38 A gas takes part in thermodynamic process in which it Destion is heated from same initial state to same final as temperature The processes...
- Q A hollow cylindrical shell of radius R has mass M It is filled with water having mass m and placed on an inclined plane connected to a spring spring constant...
- Q In the system shown in figure the block A is pulled towards right at a constant speed of 1 m s Find speed of block B w r t ground...
- Q One proton beam enters a magnetic field of 10 T normally Specific charge 10 C kg velocity 10 m s What is the radius of the circle described by it...
- Q 44 A sphere of radius R at temperature T radiates according to Stephan s law at the rate of H J sec R The rate of radiation of a similar...
- Q The light waves having wave equations y 10Sin ot kx and y 5Sin kx oot interfere The ratio of maximum to the minimum intensity of light in the interference pattern...
- Q 14 If a graph of T versus M is plotted then mass of the given spring from the graph is equal to 1 point O magnitude of negative X intercept...
- Q 8 The instantaneous velocity v of a particle starting with the initial velocity vo and moving with uniform acceleration after time t is give be v vo at Prove by...
- Q wooden cup from an site has an activity of 2 0 Bq The corresponding activity of newly cut wood is 8 4 Bq If the half life of 4C is...
- Q Mobility of electrons in N type Ge is 5000 cm volt sec and conductivity 5 mho cm If effect of holes is negligible then impurity concentration will be 1 6...
- Q A parallel plate capacitor formed by square plates of side length separated by a distance d d is filled with a material whose dielectric constant varies linearly from K to...
- Q Two blocks A and B of masses m and 2m respectively are connected by a spring of force constant k The masses are moving to the right with uniform velocity...
- Q A point mass m is attached on massless rod of length L The rod is hinged frictionless hinge The hinge is constrained to oscillate vertically with harmonic motion h t...
- Q An airplane is in supersonic flight at an altitude h At what smallest distance a along the horizontal from the observer on the ground is there a point from which...
- Q Two radioactive nuclei having half life periods 20 years and 15 years respectively have initial activities in the ratio 1 2 After how many years both posses equal activity 1...
- Q Why in the below question we are not using the formula which is given below after finding the phase difference The below given formula is used for finding the resultant...
- Q A disc of radius 20 cm mass 1kg is rolling with slipping on a flat horizontal surface At a certain instant the velocity of its center is 4 m s...
- Q Assertion A Interference obeys the law of conservation energy Reason R The energy is redistributed in case of interference 1 Both Assertion and Reason are true and the Reason is...
- Q Electrons of mass m with de Broglie wavelength A fall on the target in an X ray tube The cut off wavelength o of the emitted X ray is 1...
- Q A particle is projected with some speed at an angle of 60 with horizontal and simultaneously a bee starts following the path of particle with san constant speed The list...
- Q Identify the correct statement s The centre of mass of an object must be within the object All the mass of an object actually concentrate at its centre of mass...
- Q In the situation shown a man of mass 60 kg is initially located at the left end of 8 m long trolley of mass 240 kg The system is initially...
- Q W ment section tai The acceleration of the block B in the assuming the surfaces and the pulleys P are all smooth and pulleys and strir light is 3F xm...
- Q An electron is in a finite square well that is 0 6 eV deep and 2 1 nm wide Calculate the energy of the lowest state that an electron is...
- Q y iment y A plane is inclined at an angle of 30 A body is projected from the bottom of the inclined plane at an angle of 60 with the...
- Q A compound microscope with an objective of 1 0cm focal length and eyepiece 2 0cm Focal length of a tube is 20cm Calculate the magnifying power of the microscope i...
- Q A ball is projected from to of a tower of height 80m with u 50m s at an angle 37 with horizontal Find range time of flight 50ms 80 m...
- Q If minimum possible work is done by a refrigerator in converting 100 grams of water at 0 C to ice how much heat in calories is released to the surroundings...
- Q View In Engl child with poor table manners is sliding his dinner plate back and forth in SHM with an amplitude of 10 cm on a horizontal surface At a...
- Q 4 A simple pendulum performs simple harmonic motion about x 0 with an amplitude a and time period T The speed of the pendulum at x a 2 will be...
- Q A bob of a simple pendulum has mass m and is oscillating with an amplitude a If the length of the pendulum is L then the maximum tension in the...
- Q Three forces with magnitudes of 75 pounds 35 pounds and 65 pounds act on an object at angles of 30 45 and 135 respectively with the positive x axis Find...
- Q 12 2 There are two identical balls of mass m 0 2 kg are suspended on two threads of The threads are made of the same material and in their...
- Q The extension in a string obeying Hooke s law is y when velocity of wave in it is v If extension is increased to 1 5y then velocity of wave...
- Q What is the meaning of of neutralization 1 poin The heat is given out when 1 mol of O salt is formed from the reaction between acid and alkali O...
- Q A man of mass M is standing on the platform The platform is executing S H M of frequency f in vertical direction The span of oscillation is L Then...
- Q Consider a hydrogen like atom whose energy in nth exicited state is given by En 13 6 Z2 n when this excited atom makes a transition from excited state to...
- Q In an experiment a magnet with its magnetic moment along the axis of a circular coil and directed towards the coil is withdrawn away from the coil and parallel to...
- Q A train travelling at 20 km hr is approaching a platform A bird is sitting on a pole on the platform When the train is at a distance of 2...
- Q 3 A body freely falling from the rest has a velocity u after it falls through a height h The distance it has to fall down for its velocity to...
- Q How come certain solid objects are elastic a Because chemical forces are not rigid while they are flexible within limits they oppose deformations b Because physical systems under stress tend...
- Q 8 Consider the arrangement shown in figure distance D is large compared to the seperation between the slits A monochromatic beam of light c wavelength falls on the slit as...
- Q A solid conducting sphere of radius 2R carrying charge Q is surrounded by two point charges Q and 2Q as shown in the figure The electric field at point P...
- Q 12 Two particles A and B mov velocity and v along two mutually perpendicular straight lines towards intersection point O as shown in figure At moment t 0 particles were...
- Q 6 Consider two hot bodies B1 and B2 which have temperatures 100 C and 80 C respectively at a time t 0 The temperature of surrounding is 40 C The...
- Q A nucleus of mass number A initially at rest emits an alpha particle The de Broglie wavelength of the emitted alpha particle is 2 Immediately after the emission the de...
- Q A circular loop has a radius 20 cm is placed in a uniform magnetic field B 2T in the XY plane as shown The loop carries current i 1A The...
- Q Two equal point like positive charges A and B are fixed on the y axis equidistant from the origin What can you say for the net electrostatic force on a...
- Q FH Of A uniform rod of length is pivoted at one of its ends or a vertical shaft of negligible radius When the shaft rotates at angular speed to the...
- Q each of resistance R A battery of negligible internal resistance is connected across the opposite corners A and C of the top face of the cube A current I enters...
- Q Two particles are projected in vertical x y plane from point P and Q as shown in figure If they perform motion under gravity then value of u so op...
- Q Activity No 4 Speed in angles What you need calculator pen and paper What to do Read each item carefully then answer the questions that follow Show your solutions 1...
- Q Two identical charged particles moving with same speed enter a region of uniform magnetic field If one of these enters normal to field direction and the other enters along a...
- Q A rectangular loop of sides 25 cm and 10 cm carrying a current of 15 A is placed with its longer side parallel to a long straight conductor 2 cm...
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