Physics question and answers for July 04, 2024
- Q 33 If velocity v of a particle moving on a straight line as a function of position x is given as v x 5x 4 then acceleration of the particle...
- Q stion 13 The refinery plant storing crude oil in a storage tank made up of carbon steel of density 7 53 g cm is exposed of an area 0 097...
- Q Which of the following technique can be used in time division multiplexing for transmission of analog signals pulse position modulation O pulse amplitude modulation pulse width modulation Oit is not...
- Q Twelve paintballs are shot at the same speed but different angles at a sloped wall Perhaps it s the side of a pyramid or some other architecturally interesting building They...
- Q 98 Resultant of two vectors A and B is R Now mag nitude of vector is doubled keeping direction same then magnitude of the resultant becomes B Angle between vector...
- Q n be image We have to find the total resistance of it The answer to this is that in this circuit sho rt circuit will happen please give a detailed...
- Q A very long carrying a current t kte at k 0 as a function of time t 0 taken as a Counter clockwise current to be positive A circular conducting...
- Q A coil of resistance R and self inductance L is connected to a battery of emf E through a switch S The switch is closed at t 0 Calculate the...
- Q If the potential difference V applied across a conductor is increased to 2V with its temperature kept constant free electrons in a conductor i remain the same ii become half...
- Q 5 Two plane mirrors P and Q are kept parallel to each other as shown in the figure A light ray is incident at an angle 60 at a point...
- Q Two bodies A and B are moving towards a plane mirror with speeds VA and v respectively as shown in the figure The speed of image of A respect to...
- Q A rigid conducting wire bent as shown is released to fall freely in a horizontal magnetic field which is perpendicular to the plane of the conductor If magnetic field strength...
- Q The electric potential between a proton and an electron is given by V Voln where ro is a constant Assuming Bohr s model to be applicable write variation of In...
- Q 17 A particle of mass m moving with a constant velocity 20 v hits another identical stationary particle If coefficient of restitution is e then ratio of velocities of two...
- Q For a particle executing SHM the displacement x is given by x A cos wot Identify the graph which represents the variation of potential energy PE as a function of...
- Q An HCl molecule has rotational translational and vibrational motions If the rms velocity of HCl molecules in its gaseous phase is v m is its mass and kg is Boltzmann...
- Q A square loop containing an inductor of inductance 4 H and a capacitor of 2F is fixed in the plane of wires infinitely long carrying current I 4t Amp and...
- Q Directions The following questions consist of two statements I and II To answer these questions choose any one of the following four responses Codes A If both statements I and...
- Q 42 Two identical blocks A and B are connected with a spring of constant k as shown in figure If block B is moving rightward with speed v then the...
- Q 3 Friction coefficient between block and inclined plane is H if lift is moving vertically down with constant acceleration a then the value of acceleration a so that block moves...
- Q 30 Two masses m and m are connected by a light rod of length If rod is rotating about an axis with angular speed o Such that its kinetic energy...
- Q 36 resistance A ring is made R 12 2 Find the points A and B as shown in should be connected so that the resistance R of the the figure...
- Q Two spherical bodies of mass M and 5M and radii R and 2R are released in free space with initial separation between their centres equal to 12R If they attract...
- Q In digital communication role of Channel encoder is multiple correct answers To convert analog information signal to digital signal To modulate information signal Add redundant bits to digitally converted information...
- Q 7 A 100 eV electron is fired directly towards a large metal plate having surface charge density 2 x 106 C m2 The distance from where the electron be projected...
- Q 32 Capacity of parallel plate capacitor with a medium of dielectric constant 8 is 12 F If the medium is removed then capacity of the capacitor would be O 96...
- Q Which is true about aliasing and foldover distortion You can have one or the other but not both Aliasing is a technique to prevent foldover distortion O They are the...
- Q no 21 10 A block of mass 2 kg is redeased from the top of an inclined smooth surface as shown is figure If spring constant of spring is 100N...
- Q lid sphere of radius R has a charge Q distributed in its volume with a charge density p kra where k and a are constants and is the distance from...
- Q 1 Zero 2 2 3 3 4 4 34 A body A starts from rest with acceleration a After 2 seconds another body B starts from rest with acceleration a...
- Q a scientist begins with 100mg of a radioactive substance that decays exponentially after 37 hours 50mg of the substance remains How many miligrams will remain after 57 hours
- Q 1 x m are placed at the opposite ends of a rigid rod of length L and negligible mass perpendicular to it The position of point P on this The...
- Q 6 64 Two satellites S and S revolve around a planet in coplanar circular orbits in the opposite sense The periods of revolutions are T and nT respectively Find the...
- Q 0 A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg She produces...
- Q Figure shows a block of mass m placed on smooth surface of wedge of mass M and inclination e Wedge is kept on smooth horizontal surface Find acceleration of wedge...
- Q If a particle is projected from point p on the inclined plane Speed of projection is u inclination angle of plane is 0 45 and the particle is projected perpendicularly...
- Q e diagram shows the displacement time graph for a particle moving in a straight line Find the average speed for the interval from t 0 t 3 sec Displacement m...
- Q A diatomic molecule is made of two masses m and m2 which are separated by a distance r If we calculate its rotational energy by applying Bohr s rule of...
- Q A metallic block with no potential difference applied across it then the mean velocity of free electrons at absolute temperature T is Proportional to T O Proportional to T Zero
- Q 12 Which of the following statement s is are incorrect regarding an elastic collision 1 In an elastic collision the linear momentum of system remains constant 2 In an elastic...
- Q The resistances of the four arms P Q R and S in a Wheatstone s bridge are 10 ohm 30 ohm 30 ohm and 90 ohm respectively The e m...
- Q 3 A bus moves in the curved path as shown 240 km hour 9 km minute x km 2 15 km hour 0 5 5 1Q Which is its average...
- Q 26 A disc of radius R has a concentric hole of radius R 2 an axis through its centre and perpendicular to its plane is 1 23 MR 1 and...
- Q 15 A particle is given an initial speed inside a fixed smooth spherical shell of radius 1 m such that it just able to complete the vertical circle acceleration of...
- Q 3 2 4 4 In a vernier callipers length of 10 main scale division is 2 mm If 20 vernier scale divisions coincide with 18 main scale divisions then the...
- Q A rectangular plot of land measuring 0 45 hectors is represented on a map by a similar rectangle of 5 sq cm Calculate RF of the scale Draw a diagonal...
- Q 20 A man of mass m is standing at one end of a trolley of mass M and length L placed at rest on a smooth horizontal surface The man...
- Q 18 A particle of mass m makes a head on elastic collision with another stationary body of mass m If m rebounds with half of its original speed then m...
- Q An object is thrown in vertically upward direction The time to reach maximum height is 9 VC vo vo 9 vo g V 0 T u 6 V 0 a...
- Q h a massive metal cylinder of height h 1 m closed on top by a moving piston is an ideal gas On top of the piston we gently put weight...
- Q 6 Speed distribution of molecules of an ideal mono atomic gas trapped in a vessel is given in the following table Speeds of the molecules number of molecules 10 20...
- Q 6 When some potential difference is maintained between A and B current I enters the network at A and leaves at B When switch S is closed the equivalent resistance...
- Q Level 11 In the circuit shown the cells A and B have negligible resistances For VA 12 V R 500 and R 100 2 the galvanometer G shows n deflection...
- Q For a satellite escape speed is 11kms If the satellite is launched at an angle of 60 with the vertical what will be the escape speed 11 km sec because...
- Q is equal to initial linear momentum of the system 13 If both the blocks moving with constant acceleration then extension in spring 32 N 1 6 cm 2 12 cm...
- Q 4 0 20 Nm An automobile moves on a road with a speed of 54 km h The radius of its wheels is 0 45 m and the moment of...
- Q An object 5 cm long and a pencil 10 cm long are placed in front of a pin hole camera such that their images have the same length The ratio...
- Q 29 A long straight wire of radius a carries a steady current I The current is uniformly distributed over its cross section The ratio of the magnetic fields B and...
- Q M 21 If a particle of mass m is thrown with speed v at an angle 60 with horizontal then angular momentum of particle at highest point about point of...
- Q a 12 5 10 C E 200 GPa If the rod fitted strongly between the supports as shown in the figure is heated the stress induced in it due to...
- Q In a sample of hydrogen atom all electron are in a particular excited state n when all electrons return to ground state photon with six different wavelength are emitted Which...
- Q A luminious object is placed 20 cm from surface of a convex mirror and a plane mirror is set so that virtual images formed in two mirror coincide If plane...
- Q A bar magnet is situated on a table along east west direction in the magnetic field of earth The number of neutral points where the magnetic field is zero are...
- Q 1 Rohan and Anirban are students of the same school that is 18 km away from their hostel One day they started from their hostel at the same time with...
- Q A quantity P is given as P A B C4D which brings maximum error in Pis 1 A 2 B 3 C 4 D The quantity
- Q 22 A disc is in the condition of pure rolling on the horizontal surface The velocity of centre of mass is Vo If radius of disc is R then the...
- Q Question 4 Viow In English v In the given figure each plate of capacitance C has partial value of charge Options 1 O CE CER 2 O R r CER...
- Q Find equivalent capacitance between A B Options 1 C 2 O 2 C 3 O 30 4 O 4 C HH X C C 2C 4C Section series
- Q 39 A body is allowed to fall from altitude 100 m If the time taken in first 50 m is t and for remaining 50 m is t then neglecting...
- Q 19 The centre of mass of a non uniform rod of length L whose mass per unit length is proportional to x where x is distance from one end 1...
- Q The maximum energy stored in the inductors is x J The value of x is cha 892 A B 16 V L 23H 2 Your Answer ellee L 36 H
- Q A potentiometer consists of a wire of length 10 m and resistance 30 Q is connected in series with a battery of e m f 2 5 V and internal...
- Q Medical IT JEE Foundation 5 A person is standing at the floor of lift drops a coin The coin reaches the floor of lift in time t if elevator is...
- Q Options 1 O A 3d View In English v The expression for the equivalent capacitance of the system shown is A is the cross sectional area of one of the...
- Q The radius of circle the period of revolution initial position and sense of revolution are indicated in the figure y projection of the radius vector of rotating particle Pis t...
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