Physics question and answers for August 05, 2024
- Q 52 3 5 4 0 When a uniform metallic wire is stretched the lateral strain produced in it is If a and Y are the Poisson s ratio and Young...
- Q ALLEN 16 x m 90 80 70 60 50 30 201 2 3 B 56789 t sec 16 Displacement time graph of two particle A B is shown in the...
- Q EXAMPLE 14 Sum and Difference Together Consider vectors A and B having equal magnitude of 5 units and are inclined each other by 60 Find the magnitude of sum and...
- Q 39 What work must be done to rotate an electric dipole through an angle 0 with the electric field if an electric dipole of moment p is placed in an...
- Q ABLE MASS SYSTEM Consider at any time t a system of mass m travelling with velocity v as shown After a small time dt let its mass become m dm...
- Q A 4 5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm The position of image and the magnification respectively are 5 2...
- Q 9 The magnetic field in a region between the poles of an electromagnet is uniform at any time but its magnitude is increasing at the rate of 0 02 T...
- Q 3 Both 1 and 2 4 Acceleration A ruler is dropped vertically through the gap 14 between your thumb and fore finger Then find reaction time if displacement of ruler...
- Q Sir in this magnetic flux is changing for every shape beca e magnetic field lines are continuously decreasing theref emf will also change 38 90 77 6 A rectangular a...
- Q A block of mass M is hanging from a mass less spring of spring constant k Initially the block is in equilibrium In this position length of the spring is...
- Q 3 volume of 1 m at a constant pressure of 100 N m Then it is heated at constant volume by supplying 150 J of energy As a result the...
- Q Two capacitors C C and C 3C are connected as shown in figure Initially key K is open and capacitor C holds charge Q after closing the key K the...
- Q displacement if motion is uniform 4 Quantity P may be velocity if motion is uniformly accelerated A ball is dropped from a building of height 45m Simultaneously another ball is...
- Q A ray of light incident at an angle 0 on a refracting face of a prism emerges from the other face normally If the angle of the prism is 5...
- Q 16 In the arrangement shown in figure block Q is being pulled with constant speed 9 m s in horizontal direction All strings pulleys are ideal then speeds of points...
- Q 12 A plastic ball is suspended inside liquid filled in a closed cylindrical container shown in figure The elongation in spring is 1 mm The cylinder is now rotated about...
- Q In the circuit shown in figure neglecting source resistance the voltmeter and ammeter reading will respectively be V X 10 22 ooowooo 1 OV 3A 2 150V 3A 3 150V...
- Q For a series LCR circuit for two different angular 002 frequency of A C supply system w and 2 power factor of the circuit is same Angular resonance frequency of...
- Q Two wires of same length are shaped into a square and a circle If they carry equal current and placed in uniform magnetic field with their plane perpendicular to magnetic...
- Q 10 A body kept on a smooth inclined plane of inclination 1 in x will remain stationary relative to the inclined plane if the plane is given a horizontal acceleration...
- Q OPTICS PHYSICS X APT 2021 22 13 Athin prism has different medium on its either side A light ray is incident almost normally on the first face What is the...
- Q Two parallel and opposite forces each 4000 N are applied tangentially to the upper and lower faces of a cubical metal block 25 cm on a side Find the angle...
- Q daughter nuclei respectively in a radioactive decay The Q value of decay is Q and that for decay is Q If me is mass of an electron then which of...
- Q The moment of inertia for a uniform rectangular slab about an axis passing through its geometric centre and perpendicular to its plane is length b breadth M 12 1 b...
- Q The electric field near the earth s surface is 44 N C downward An object of charge 10 2 C floats at rest near the earth s surface as shown...
- Q A ball dropped from a tower strikes the ground in 6s Find the velocity strikes the ground What is the distance travelled by the ball in the last 3s g...
- Q A certain charge Q is to be divided in the ratio p q between two bodies which are located at a certain fixed distance from each other For the force...
- Q 5 Given below are two statements labelled as Assertion A and Reason R Assertion A A capacitor can be given only a limited amount of charge Reason R After a...
- Q A very long line of charge density 7 nC m is placed parallel to a very large sheet of charge denstiy a 4 nC m as shown in the figure...
- Q 2a sin is silvered on one side as shown in figure x and y are in 37 a cm If a ray incident on surface parallel to x axis and...
- Q 5 A rope 3 cm diameter has a breaking strength 1 5 105 N The breaking strength of a similar ro 1 5 cm is diameter is 1 2 10...
- Q please make me understand I am not getting understand Please explain in detail so that I can understand better
- Q A cricket player catches a ball of mass 100 gm moving with velocity of 10 m s If the ball is caught and stopped in 0 02 second the average...
- Q P Given below are two statements labelled as Assertion A and Reason R Assertion A Current density is defined as current per unit area and is directed along the direction...
- Q A particle is travelling on a curved path In a certain time interval it speed changes from v to however magnitude of change in velocity is 3v then 1 Final...
- Q In the figure shown there is a equi convex lens of radii of curvatures 20cm The observers A B are at rest Slab lens are moving rightward as shown then...
- Q 3 15 mm 25 Breaking stress of a wire of radius r is So If radius becomes double then breaking stress of same wire becomes 1 So 3 450 w...
- Q lock B of mass m is suspended from a cord of length attached to a cart A of mass M as shown in the figure The horizontal surface on which...
- Q corners of a square of side and a charge qo is ke at its centre so that whole system is in equilibriur The charge q is 1 90 11 2...
- Q 34 A point charge Q is fixed above a large conducting sheet Select correct statement regarding electric field 1 Electric field is uniform in space upper and lower side of...
- Q Which of the following statements is wrong for an image formation of a real object NCERT Pg 315 1 The magnification produced by convex mirror is always less than one...
- Q even be used analytically such as in a mass spectrometer Q 5 If an electron describes half a revolution in a circle of radius r in the magnetic field B...
- Q An electric dipole of moment p is kept at the origin pointing along the z axis Given that z is much greater than the length of the dipole the potential...
- Q g 9 8m s 122 5 m A body is released from rest from a height of 490 m Find the time taken by the body to reach the ground...
- Q estion 2 Two point charges are located on the x axis The first is a charge q11 00 nC at x 0 500 m At what distance x in cm...
- Q When an AC voltage of 220 V is applied to the capacitor C a the current is in phase with the applied voltage b the charge on the plates is...
- Q A particle is projected from origin in x y plane x in horizontal direction y in vertical direction If there exists a field that exert a force on the particle...
- Q A load of 2 kg produces an extension of 1 mm im a wire of 3 m in length and 1 mm in diameter The Young s modulus of wire...
- Q A is false and R is also false 7 Assertion A The voltage sensitivity may not necessarily increase on increasing the current sensitivity Reason R Current sensitivity increases on increasing...
- Q A particle of mass m moves in circular orbits with potential energy V r Fr where F is a positiv constant and r is its distance from the origin Its...
- Q An isolated conducting sphere of radius R has a positive charge Q Another uncharged conducting sphere of radius R 2 is brought in contact with the first one and then...
- Q The x z plane is the boundary between two transparent medium Medium I with y 0 has refractive index and medium Il with y 0 has refractive index 1 A...
- Q 37 When inner and outer concentric spheres as shown in figure have 20 C and 15 C charges potential difference between them is 40 V If charge on outer sphere...
- Q The path of a projectile is defined by the equation r 3t t 30 and 0 1600 t Find its velocity and acceleration after 30 sec r 3t t 30...
- Q A thin uniform rod AB of mass m and length L is placed on a smooth horizontal table Rod is hinged at centre of mass as shown A constant horizontal...
- Q The circuit as given in figure contains two diodes each with a forward resistance of 30 0 and with infinite backward resistance if the battery is 3 V the current...
- Q 8 A parallel plate capacitor is charged to a potential difference V by a DC source and the If the distance between the plates is doubled Capacitance will change t...
- Q 1 A slender prismatic bar AB is supported in a horizontal position as shown in Fig A At what distance x from the hinge A should the vertical string DE...
- Q A particle of mass m moving with velocity v strikes elastically with a mass m at rest then the condition for maximum transfer of kinetic energy is Om m O...
- Q 3 Acceleration of 1 w r t rope is 5g upwards Find acceleration of 2 w r t rope so that block remains at rest 113 2 m
- Q 6 In the following four situations charged particles are at equal distance from the origin Arrange them the magnitude of the net electric field at origin in increasing order i...
- Q 20 The poten energy function for the force between two atoms in a diatomic molecule is approximately given by a where a and bare b 6 constants and x is...
- Q When frequency of applied alternating voltage is very high then a A capacitor will tend to become SHORT b An inductor will tend to become SHORT c Both A and...
- Q In a metre bridge what is the effect on null deflection of galvanometer when the radius of the meter bridge wire is doubled a There will be no change b...
- Q 32 Three identical ideal electric dipoles are arranged as shown in the figure The electric field strength at point R is equal to symbols have their usual meaning 1 41...
- Q A ball of mass m is thrown at an angle is with the horizontal with an initial velocity The change in its momentum during its time of flight T is...
- Q spiral paths when encountering the magnetic field of astrophysical objects or planets one example being Earth s magnetic field The curved paths of charged particles in magnetic fields are the...
- Q A bulb and an inductor are connected in series to an ac source through a switch The bulb glows with certain brightness when the switch is closed If a soft...
- Q 33 A charge q is fixed near by two point charges Q each as shown The net force experienced by the charge is equal to 0 1 01 1 2Qq...
- Q One plate of a capacitor is connected to a spring as shown in figure Area of both the plates is A In steady state separation between the plates is 0...
- Q 16 A uniform electric field of strength 60 V m exists in X Y plane making an angle 120 with positive x axis The potential difference between points P 2...
- Q Assertion A If an electron and proton enter a magnetic field with equal momentum then the paths of both of them will be equally curved Reason R The magnitude of...
- Q 14 Two metallic cylinder made of same material and radii r and 2r are joined as shown in figure If top end is fixed and lower end of cylinder B...
- Q strikes the ground What is the distance travelled by the ball in the last 3s g 9 8 m s 58 8 m s 132 3 m A body is...
- Q A 3 kg mass is moving in a plane with its x and y coordinates given by x 5t 1 and y 3t 2 Then at t 2 seconds A...
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