Physics question and answers for July 05, 2024
- Q The work done of vectors force F and distance d separated by angle 6 can be calculated using ans a Cross product d Cannot be calculated b Dot product c...
- Q 4 In the measurement of resistance by Wheatstone meter bridge the known and unknown resistance are interchanged to eliminate O minor error O contact error O observational error 1 F
- Q A cylinder is free to rotate about its axis It angularly accelerate from rest at the rate of TT rad s for a period of 3sec and then it is...
- Q 2 In Sor vibrating length is O O O O poir directly proportional to the tension in the wire directly proportional to the square root of tension in the wire...
- Q 3 A particle of mass m hits another particle in rest of mass m obliquely If both the particles after elastica collision moves perpendicular to each other then m m...
- Q Two blocks A and B of same mass M are connected with each other with an ideal string of length 2 passing over an ideal pulley The block A is...
- Q A long cylindrical vessel is half filled with a liquid When the vessel is rotated about its own vertical axis the liquid rises up near the wall If the radius...
- Q 37 A millivoltmeter of 25 millivolt range is to be converted into an ammeter of 25 ampere range The value in ohm of necessary shunt will be 1 1 3...
- Q 2R 30 A cubical block of side a and density p slides over a fixed inclined plane with constant velocity v There is a thin film of viscous fluid of...
- Q 1 m Two balls A and B of masses 1 kg each are connected by an inextensible massless string The system is resting on a smooth horizontal surface An impulse...
- Q 3 13 the 54 What should be the value of does not slide over the triangular wedge surfaces are smooth m 4 m m 5 1 m 2 4 3...
- Q 28 A satellite is launched in the equatorial plane in such a way that it can transmit signals up to 60 latitude on earth Orbital velocity of satellite is 1...
- Q A particle executes simple harmonic motion with amplitude A and period T If it is half way between mean position and extreme position then its speed at that point is...
- Q 4 Increase in one and decrease in second 23 Consider a thin metallic sheet perpendicular to the plane of the paper moving with speed v in a uniform magnetic field...
- Q Moment of inertia of a rigid body is expressed in units of kg m There are two rods A and B made of same metal Both of them have equal...
- Q Work function of two m surfaces are 2 0 eV and 3 0 eV Both are illuminated by light energy of incident photons greater than 3 eV If graph is...
- Q A coil having n turns and resistance R 2 is connected with a galvanometer of resistance 4 R 2 This combination is moved in time t seconds from a magnetic...
- Q A simple pendulum has length 2m and a bob of mass 100 gram It is whirled in a horizontal plane If the string breaks under a tension of 10 N...
- Q Define gradient of scalar function and explain it s geometrical significance If 7x y y x find grad at the point 1 3 2 Define divergence of a vector function...
- Q A light ray is incident on a plane mirror at ar angle of incidence of 30 as shown in the figure The mirror is rotated by 45 in the clockwise...
- Q AB is a potentiometer wire of length 100 cm and its resistance is 10 ohm It is connected in series with a battery of emf 2V and resistance 40 ohm...
- Q 18 An electric refrigerator extracts 2000 calories from ice tray The coefficient of performance is 5 Then work done by the compressor in Joule will be 2 1680 joules 4...
- Q For a particle performing S H M when displacement is x the potential energy and restoring force acting on it is denoted by E and F respectively The relation between...
- Q The network shown in figure is a part of a complete circle If at a certain instant the current 1 is 5 A and is ncreasing at a rate of...
- Q In system of two particles it is possible Energy of system is conserved but momentum of system is not conserved O Energy of system is not conserved but momentum of...
- Q 4 A parallel beam of light is incident from air at an angle a on the side PQ of a right angled triangular prism of refractive index n 2 Light...
- Q Question 16 If a direct current of value a ampere is superimposed on an alternative current I b sin wt flowing through a wire what is the effective value of...
- Q 15 A particle is executing a simple harmonic motion Its maximum acceleration is a and maximum velocity is Then its time period of vibration will be B 2 B a...
- Q 17 The oscillation of a body on a smooth horizontal surface is represented by the equation X A cos cot where X displacement at time t frequency of oscillation Which...
- Q 85 The equivalent resistance of the circuit between points A and B is Ao Bo 1 2R 3 3R www 2r 2r www www 4r 4r www 8r www 2...
- Q A train is moving towards east and a car is along north both with same speed The observed direction of car to the passenger in the train is A East...
- Q A mono chromatic source emits parallel beam of light of power 60 W emits 10 8 photons s All these photons falls normally on a black surface and get absorbed...
- Q Figure shows a circuit containing three resistors X X2 X3 an ideal inductor an ideal capacitor and an ideal emf source connected as shown The resistors have resistance Reach the...
- Q PART B Answer all the questions Each question carries 5 marks 1 Find the velocity and the position as functions of the time for a particle of mass m which...
- Q relative density mersed What e top of wood of metal 14 13 it consists rical plug of of length 10 ottom of the up and the ermine the The float...
- Q circuit is in unbalanced condition as potential difference is same across ends of wire Although mathematically i have found potential difference across ab in terms of i and that current...
- Q Q No 28 View In English A long straight wire carrying a current of 1 0 A is placed horizontally in a uniform magnetic field B 10 x 10 5T...
- Q In a double slit experiment green light 5303 falls on a double slit having a separation of 19 44 m and a width of 4 05 m The number of...
- Q An object comprises of a uniform ring of radius R and its uniform chord AB not necessarily made of the same material as shown Which of the following can not...
- Q A 0 034 kg mass ping pong ball is dropped from a height 1 76 m in a place where gravity is 9 8 m s Air friction is negligible...
- Q 4 Linear and rotational 29 A horizontal disc is rotating about a vertical axis passing through its centre If an insect moves from centre to rim then the angular momentum...
- Q 26 A piston arrangement pushes a liquid with speed of 2 cm sec The radii of container and its nozzle are 10 cm and 2 mm respectively The velocity of...
- Q Two bodies A and B of equal mass are suspended from two separate massless springs of force constant ki and ka respectively The bodies oscillate vertically such that their maximum...
- Q Problem 2 A bag with a mass of 5 kg is being held 3 m above the table and a ball with a mass of 2 5 kg held with...
- Q A body performing simple harmonic motion has potential energy Pi at displacement Its potential energy is P2 at displacement x The potential energy P at displacement x x is P...
- Q A concave mirror of radius of curvature 40 cm is placed at the bottom of a tank of water with its optical axis vertical and the mirror facing upward Find...
- Q A pendulum performs S H M with period 3 second in a stationery lift If lift move up with acceleration the period of pendulum is g acceleration due to gravity...
- Q Question 14 Two concentric coplanner coils of turns n and n2 have radii ratio 2 1 respectively Equal current in both the coils flows in opposite direction If net magnetic...
- Q A coin is placed on the horizontal plate Plate performs S H M vertically with angular frequency o The amplitude A of oscillations is gradually increased The coin will lose...
- Q PCM signal is called as O The signals which are obtained by encoding each quantized signal into a quantized word The signals which are obtained by encoding each quantized signal...
- Q Let 0 be the angle between vectors A and B Which of the following figures correctly represents the angle 0 1 tot B 0 0 B 2 4 B B...
- Q An iceberg is floating partially immersed in sea water The density of sea water is 1 03 gm cm and that of ice is 0 92 gm cm What is...
- Q Two projectiles A and B are projected simultaneously from towers of same height as shown in figure in same vertical plane then 20 m s A 37 50 m 15...
- Q 5 8 A particle of mass m is projected at t 0 from a point P on the ground with speed v at an angle of 45 to the horizontal...
- Q An electric kettle takes 4A current at 220V How much time will it take to boil 1kg of water from temperature 20 C The temperature of boiling water is 100...
- Q A projectile is fired at angle of 45 with the horizontal Elevation angle of the projectile at its heighest point as seen from the point of proejection is A B...
- Q glish A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V Another capacitor of capacitance 2C is connected to another...
- Q I CH 4 CH C CH and H I CH 40 The most stable carbocation is and H 1 CH3 CH CH3 2 CH3 CH CH CH3 3 CH3 CH...
- Q The work done by a variable force is measured by taking an infinitesimal length element di dxi dyj dzk such tha W fF di A particle of mass 2 kg...
- Q Two blocks A and B of masses m and 3m are held against a compressed spring on a frictionless horizontal floor with the help of a light thread When the...
- Q Two identical satellites are at the heights R and 7R from the Earth s surface Then which of the following statement is incorrect r radius of the Earth 1 Ratio...
- Q 63 A solid sphere of mass m and radius R is released the top of an inclined plane such that it rolls down without slipping If the coefficient of friction...
- Q ball 4 58 A 10kg hammer strikes a nail at a velocity of 12 5 m s and comes to rest in a time interval of 0 004 sec Find...
- Q An asteroid in space initially at rest explodes into two pieces A and B which then move in opposite directions Piece A has less mass than piece B Ignore external...
- Q O Mohan wears a special kind of a spectacle that produces an upright image on the retina then he will a see everything upside down 14 75e everything upright c...
- Q Choose the CORRECT statement Work energy theorem can not be applied if non conservative forces are doing work O Centre of mass of an object may lie outside the object...
- Q A ring of mass m slide from rest on the smooth rod as shown in the figure due to the block of mass m Pully and string are massless Then...
- Q Write any 3 advantages and disadvantages of ferrous alloys For the toolbar press ALT F10 PC or ALT FN F10 Mac TUS Paragraph V Arial
- Q E An ice block with some stone pieces embedded in it is floating in a water tank If ice melts the level of water in the tank 1 Increases 2...
- Q Four rods of equal lengths AB BC CD and DA have mass m 2m 3m and 5m respectively are placed in x y plane see figure given AB BC CD...
- Q A square of side a is lying in xy plane such that its two adjacent sides are lying on the x and y axes If an electric field E Ek...
- Q A metal sphere A of radius r charged to a potential is enveloped by a thin walled conducting spherical shell B of radius r Then potential of the sphere A...
- Q 18 19 20 21 22 23 24 25 26 27 28 dx A 0 d 2 dx A log 2 dx A 2 cos 2x x A B 1 B...
- Q 2 A uniform thin rod of mass m and length equal to the diameter of earth is kept normally to the surface of earth The magnitude of gravitational force acting...
- Q 1 8 A thin prism P with 4 and made from glass of refractive index 1 54 is combined with another thin prism P made from glass of refractive index...
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