Physics question and answers for September 12, 2024
- Q In this diagram the angle of incidence the angle of emergence and the angle of deviation respectively have been represented by A y p z B C D x q...
- Q An electric dipole of moment p placed in uniform electric field has minimum potential energy The work done by external agent to rotate this dipole very slowly upto which it...
- Q PROPERTIES OF MA When a small magnetising field H is applied to a magnetic material the intensity of magnetisation is proportional 1 H 2 H 2 3 H 4 H...
- Q You are given a number of 14 2 resistors each capable of dissipating only 1 7 W without being destroyed What is the minimum number of such resistors that you...
- Q Two insulated wires of infinite length are lying mutually at right angles to each other as shown in Currents 2A and 1 5A respectively are flowing in them The value...
- Q Two particles having charges in the ratio 1 2 are projected in a uniform magnetic field with same momentum If they are projected normally to magnetic field then the ratio...
- Q The top of the lake is frozen The air in contact with surface of lake is 20 C Then the maximum temperature of water in contact with lower surface ice...
- Q A toy top of constant density do is constructed from a portion of a solid hemisphere of radius R with conical base of the height H The center of the...
- Q The magnetic moment of a circular coil carrying current is 1 directly proportional to the length of the wire in the coil 2 inversely proportional to the length of the...
- Q is A straight wire of diameter 0 5 mm carrying a current of 1A is replaced by another wire of diameter 1 mm carrying the same current The strength of...
- Q charge mass An electron is travelling in east direction and a magnetic field is applied in upward direction then electron wi deflect towards 1 south north 3 west 4 east...
- Q Gas phase sulfur S and gas phase oxygen O have the same molar mass At the same temperature they also have the same A C v B average KE per...
- Q a and b 3 a b and c 4 The distance between the plates of a parallel plate condenser is 4 mm and potential difference between them is 200V The...
- Q statement 9 d figure mark the correct Solid neutral conductor R 1 Potential of the conductor is q 4neod 2 Potential of the conductor is q 4neo d R 3...
- Q A wire loop PQRSP is constructed by joining two semi circular coils of radii r and r respectively as shown in the fig Current i is flowing in the loop...
- Q A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence Zi He then measures the corresponding values of...
- Q The dipole moment of a current loop is independent of 1 current in the loop 3 area of the loop 2 number of turns 4 magnetic field in which it...
- Q Study the given ray diagrams and select the correct statement from the following A B C D X 20 cm Screen Screen 25 cm Device X is a concave mirror...
- Q 57 A tank full of water has a small hole at its bottom If one fourth of the tank is emptied in t seconds and the remaining three fourths of...
- Q S 13 How large must F be in figure to give 700 g block an acceleration of 30 cm s The coefficient of friction between the two blocks and also...
- Q 7 An Atwood machine consists of a single pulley with masses suspended on each side It is a simplified version of many industrial systems in which counterweights are used for...
- Q Analyse the following observation table showing variation of image distance v with object distance u in case of a convex lens and answer the questions that follow without doing any...
- Q If the image formed by a lens for all positions of an object placed in front of it is always erect and diminished what is the nature of this lens...
- Q A broad source of light I 680 nm illuminates normally two glass plates 120 mm long that touch at one end and are separated by a wire 0 034 mm...
- Q 16 10 14C The charge to be put on a spherical conducto of radius 0 2 m to produce an electric field of 0 072 N C just above its...
- Q The instantaneous angular position of a point on a given by the equation e 2 6 rad where t is in second The magnitude of angular velocity of the point...
- Q 25 A circuit has a section AB as shown in the figure If the potential differnce between two points AB is 10V A at higher potential then potential difference across...
- Q 37 Four identical conducting plates are placed parallel to each other at equal separation as shown below B C 000 H Plates A and B are fixed while B and...
- Q An alpha particle of mass m suffers 1 dimensional elastic collision with a nucleus at rest of unknown mass It is scattered directly backwards losing 64 of its initial kinetic...
- Q 5 The acceleration of a particle moving along a straight line is defined by a as 2 The particle starts from rest at s 20m and it is observed that...
- Q The drift current in a p n junction is Question Type Single Correct Type 1 from the p side to the n side 2 from the n side to the...
- Q 26 In figure there is a four way key at the middle If key is thrown from situation BD to AD then how much charge will flow through point O...
- Q A proton of mass m collides elastically with a particle of unknown mass at rest After the collision the proton and the unknown particle are seen moving at an angle...
- Q To increase the current sensitivity of a moving coil galvanometer we should Question Type Single Correct Type 1 decrease number of turns in coil 2 3 decrease area of cross...
- Q If two Resistors R and R ohms are connected in parallel in an electric circuit to make an R ohm resistor The value of R can be found from the...
- Q At 27 C a gas is suddenly compressed such that its volume becomes 1 8th original volume Temperature of the gas will be y 5 3 Question Type Single Correct...
- Q 1 A series R C circuit is connected to an alternating voltage source Consider two situations a When capacitor is air filled b When capacitor is mica filled Current through...
- Q A motor is used to deliver water at a certain rate through a given horizontal pipe To deliver n times the water through the same pipe in the same time...
- Q Zener breakdown in a semi conductor diode occurs when Question Type Single Correct Type 1 Forward current exceeds certain value 2 Reverse bias exceeds certain value 3 Forward bias exceeds...
- Q A thick spherical shell of inner radius R and outer radius 2R has charge Q uniformly distributed in its volume Electric potential at center of shell is 9Q nie R...
- Q For the circuit shown in figure charge flown through the switch after it is closed is n C Find the value of 1 F 4 F S L 20 V...
- Q 3 3 A gas is compressed isothermally to half its initial volume The same gas is compressed separately through an adiabatic process until its volume is again reduced to half...
- Q The plane wall of an oven is of thickness L 0 05 m and is exposed to the surrounding at 300 K The outer surface of the oven exposed to...
- Q 14 Answer the following questions based on case study Potential due to an electric dipole The electric field of a dipole at a point with position vector r depends not...
- Q 19 There are two squares loops A and B When A moves towards B a current starts flowing in B as shown in figure and current in B stops when...
- Q 1 2 5 2 2 3 3 1 3 4 2 7 A sample of 0 1 g of water at 100 C and normal pressure 1 013 x 105...
- Q At a point on the screen in YDSE 3rd maxima is observed at t 0 Now screen is slowly moved with constant speed away from the slits in such a...
- Q One plano convex and one plano concave lens of same radius of curvature R but of different materials are joined side by side as shown in the figure If the...
- Q A lens has a convex surface one side and a concave surface another side If the radius of curvature of convex and concave are equal to R each and u...
- Q Two charges Q and Q2 placed at 0 0 0 and a 0 0 are such that x component of field is zero at 2 a o of field will...
- Q Q A neutron having kinetic energy 12 5 eV collides with a hydrogen atom at rest Neglect the difference in mass between the neutron and the hydrogen atom and assume...
- Q 1 1 64P 3 16P 2 P AIPMT 2011 A mass of diatomic gas y 1 4 at a pressure of 2 atmospheres is compressed adiabatically so that its temperature...
- Q XY6P Vo 2 4P V 3 P V A heat engine employing a Carnot cycle with an efficiency of n 10 is used as a refrigerating maching the thermal reservoirs...
- Q D 1 840 K 2 280 K 3 560 K 4 373 K Root mean square speed of ideal hydrogen gas in closed chamber at 0 C is 3180 m...
- Q Three large conducting sheets placed close and parallel to each other contain charges Q 2Q and 3Q respect Find the electric field at points A B C and D Q...
- Q The capacitance C of a capacitor is Question Type Single Correct Type 1 Independent of the charge and potential of the capacitor 2 Dependent on the charge and independent of...
- Q Two equal charges q are placed at a distance of 2a and a third charge 2q is placed at the midpoint The potential energy of the system is 1 3...
- Q A uniform rod of length is suspended from one end and is made to undergo small oscillations What is length of a simple pendulum which has same time period as...
- Q A one dimensional wave function is given by y x Va exp ax find the probability of finding the particle between x 1 a and x 2 a Select one...
- Q Q11 Air is blown through a pipe AB at a rate of 15 L min The cross sectional area o the broad portion of the pipe AB is 2 cm...
- Q backhoe exerts a force on a 726 45 kg pile of dirt that is resting on the ground The dirt is lifted 7 62 m and
- Q A small particle of mass mis attached at one end of a light string of length and other end is connected to the ceiling of a satellite revolving around earth...
- Q A small object is placed at the centre of the bottom of a cylindrical vessel of radius 3 cm and height 4 cm filled completely with water Consider the ray...
- Q What is education Explain its meaning by giving suitable definitions From which word the word Education has been originated
- Q In Young s double slit experiment the 6th bright band with wavelength coincides with 7th dark band with wavelength 22 Then 2 is a 13 12 c 6 7 b...
- Q Equation of a wave travelling along x axis on string is given as y 3 sin 3 14x 314t where x and y in cm and t in second Maximum...
- Q A container has a hole at a height of 2m If the time taken by the efflux to strike the inclined plane perpendicularly is 1 sec Then the height of...
- Q Two plane mirrors P and Q are kept at an angle with respect to each other Light falls on P is reflected and then fall on Q and is reflected...
- Q A block of mass 50 kg resting on a horizontal surface is acted upon by a force F which varies as shown in the figure If the coefficient of friction...
- Q 3 Velocity displacement curve of a particle moving in a straight line is as shown Line PB is normal to the curve and line PA is normal to the X...
- Q Which of the following will change its time period if taken to moon from earth Spring pendulum Torsional pendulum A physical pendulum All of these
- Q 8 A prism of refracting angle 60 is made of glass whose refractive indices for red and violet light are respectively 1 514 and 1 530 A white beam of...
- Q Visible light of variable wavelength is incident normally on a thin sheet of plastic film in air The reflected light is a minimum only for 512 nm and in um...
- Q A bullet is fired horizontally aiming at an object which starts falling at the instant the bullet is fired Show that the bullet will hit the object
- Q All surfaces are rough What should be the maximum coefficient of friction between block A and the surface under it so that all the blocks move together A 0 25...
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