Physics question and answers for June 30, 2024
- Q 8 Three objects are connected by ropes on a frictionless floor as 20N a 1Kg 0 O 3Kg a Find T b Find acceleration on 3kg c Find n on...
- Q 5 A rectangular coil has 60 turns and its length and width is 20 cm and 10 cm recpectively The coil rotates at a speed of 1800 rotation per minute...
- Q A laser system is capable of lasing at several infrared wavelengths where the most prominent wavelength is 3 1235 mm Given k 8 6x 10 5eV K or 1 38...
- Q 47 A rigid body contain only two particle as shown The condition which must be satisfied fagur 1 2 1 V 30 2 3V V 0 2 60 B 3...
- Q An electron of mass m and charge e is accelerated by a potential difference V It then enters a uniform magnetic field B applied perpendicular to its path The radius...
- Q A quantity of heat Q is supplied to a monoatomic ideal gas which expands at constant pressure Th fraction of heat that goes into work done by the gas is...
- Q A current carrying loop of radius r carries a current I in clockwise direction It is placed in a uniform magnetic field B such that plane of coil makes an...
- Q 3 A child stands at one end of a boat moving with a speed v in still water If the child starts running towards the other end of the boat...
- Q 32 The minimum number of capacitors of capacitance 2 F in order to obtain resultant capacitance 5 F will be 2F 1 4 2 5 eller alfey for such a...
- Q A defective satellite of mass 950 kg is being towed by a spaceship in empty space The two vessels are connected by a uniform 50 m rope whose mass per...
- Q A PV diagram for a thermody shown in he figure Then for the process choose the correct option PA 4P Pa A B V 3V 1 Temperature remains constant through...
- Q 20 Find RAB If resistance of each side RO 3R 1 R 3 R 2 2 2 4 8R ALLEN 20 Rie The reading of the ammeter as per figure...
- Q D ce of radius R separates two medium of refractive indices and as shown in figure Where should an object be placed in the medium 1 so that a real...
- Q Each of the resistors shown in the figure has 19 resistance R Find the equivalent r sistance between A and B 3 OR usiast Course 4 09092020 B SR TIR...
- Q 1 The coefficient of thermal conductivity of copper is nine times that of steel In the composite cylindrical bar shown in the figure what will be the temperature at the...
- Q travelling along a track at a constant speed of 40 m s A TV camera man is recording the event from a distance of 30 m directly away from the...
- Q 1 1 2 3 1 4 Q 19 CST 02 1 5 m Rough Surface 213 4 1 5 Thermodynamic state variables Equation of state 4P Po PV diagram for...
- Q Case Study 2 An art projector is equipment used by artists to create exact copies of artwork to enlarge artwork or to reduce artwork A basic art projector used a...
- Q 16 g sample of a radioactive element is taken from Bombay to Delhi in 2 hour and it was found that 1g of the element remained undisintegrated Half life of...
- Q 6 Two trains 101 m and 99 m in length are running in opposite direction with velocities 54 km h and 36 km h In what time they will completely...
- Q 7 ALLEN Thirteen resistances each of resistance RQ are 17 connected in the circuit as shown in the figure The effective resistance between A and B is 4R 3 RQ...
- Q 5A PV diagram for a thermodynamical process is shown in the figure Then during process from A to B choose the correct option 3P Po B A V 2Vc 1...
- Q O If the distance between successive compressions and rarefaction in a sound wave is 2 m and R velocity of sound is 360 m s then the frequency is 180...
- Q Q 8 The velocities of a particle in SHM at positions x and x are v and v2 respectively its time X1 v1 period will be 1 2n 0 0...
- Q ASSAGE He Ne laser produces light of wavelength 6328 Angstrom at room temperature Choose the correct options Marks The frequency of the emitted radiation OPTIONS 4 74 10 12 Hz...
- Q A wire has a non uniform cross sectional area as 3 shown in figure A steady current i flows through it Which one of the following statement is correct 1...
- Q 201 Two cars A and B start moving from the same poin with same speed v 5 km minute Car A moves towards North and car B is moving towards...
- Q A frictionless track consists of a horizontal part of unknown length which connects to a vertical semicircle of radius r as shown An object which is given an initial velocity...
- Q 3 3 RQ 4 20 The total current supplied to the circuit by the 18 battery is 1 A 6V Each of the www 2 2 A www 1 50...
- Q A hollow metallic sphere of radius 20 cm surrounds a concentric metallic sphere of radius 5 cm The space between the two spheres is filled with a nonmetallic material The...
- Q a The required conductivity of an n type silicon sample at T 300 K is to be o 10 0 cm 1 What donor impurity concentration is required What is...
- Q When a light wave of frequency 5x10 4 Hz is passed through a medium of refractive index 1 5 then its wavelength will become GR for 35 10 4 H...
- Q 2 Position of a particle moving along x axis is given by x 2 8t 4t the distance travelled by particle from t 0 tot 2 sec is fahit cu...
- Q For the circuit shown with R 1 0 R 2 0 E 2V and E E3 4 V the potential difference between the points a and b is approximately in...
- Q Which of the following is correct for stomata apparatus of dicot plants GC Guard cells SC Subsidiary cells 1 Non green GC Green SC Pore 2 Green GC Green SC...
- Q In the measurement of physical quantity X C1 3D of the quantities A B C and D are 2 2 4 and 5 respectively Then the minimum amount percentage error...
- Q equilibrium position x 0 270 m 70000 voooo X 0 Find the effective spring constant of the system Submit Answer Tries 0 12 The glider is now released from rest...
- Q A strong magnetic field is applied to a proton at rest Then a the particle moves in opposite direction of the applied field b the particle moves in the direction...
- Q Q18 A thin bar of length L has a mass per unit length 1 that increases linearly with distance from one end If its total mass is M and its...
- Q An incompressible non viscous fluid is injected into a conical pipe at its orifice as schematically shown in the figure The pressure at the orifice of area A is P...
- Q A 4 inches rounded cable has insulation resistance of 503 mega ohms If the specific resistance of the insulation material is 3x10 ohm cm per 500 m of length Determine...
- Q ALLEN A copper wire and an iron wire each having an area 6 of cross section A and length L and L are joined end to end The copper end...
- Q 27 View In English A 2 volt battery a 150 resistor and potentiometer of 100 cm length all are connected in series If the resistance of potentiometer wire is 50...
- Q Two coherent waves P and Q meet at a point in phase and superpose Wave P has an amplitude of 1 5 cm and intensity I The resultant intensity at...
- Q No 15 View In English Six moles of an ideal gas perfomrs a cycle shown in figure If the temperature are TA 600 K TB 800K TC 2200 K and...
- Q 4 A deuteron of kinetic energy 50 keV is describing a circular orbit of radius 0 5 m in a plane perpendicular to the magnetic field B The kinetic energy...
- Q A trolley of mass 300 kg carrying sand 200 kg in it is moving uniformly with speed of 40 km h on a frictionless track After a while sand starts...
- Q Figure shows the anode potential vs photo current graph when photons of 6 eV are incident on cathode in a photoelectric In set up the same set up if photons...
- Q In Young s double slit experiment the y coordinates of central maxima and 10th maxima are 2cm and 8cm respectively When the YDSE apparatus is immersed in a liquid of...
- Q Topic Current Electricity From Mobility Illustration To Point Potential Method Infinite Ladder Circuit 1 E denotes electric field in a uniform conductor 1 i corresponding current through it Va drift...
- Q 3 On a fixed smooth semicircular ring of radius R one end of a spring of spring constant k and natural length R 3 is attached at end A as...
- Q Three electric charges are arranged on a straight line as shown in the figure Q Q2 R R Select True or False for the following statements If Q is positive...
- Q The kinetic energy K of a particle moving along a circle of radius R depends on the distanc covered s as K as where a is a constant The force...
- Q Consider a thin square sheet of side L and 7 thickness t made of a material of resistivity p The resistance between two opposite faces shown by the shaded areas...
- Q 4 Independent of t There are two wires of the same length and of 8 the same material and radii r and 2r The ratio of their specific resistance is...
- Q A batter hits a 0 3 lb baseball at a speed of v 110 ft s an angle of a 30 so that it strikes an angled wall and rebounds...
- Q ASSAGE te Ne laser produces light of wavelength 6328 Angstrom at room temperature Choose the correct options Marks 1 The energy difference between two energy levels emitting this radiation in...
- Q A cassette recorder uses a plug in transformer to convert 120 V to 12 V with a maximum current output of 493 mA a What is the current input b...
- Q A current flows in a wire of circular cross 2 section with the free electrons travelling with a mean drift velocity v If an equal current flows in a wire...
- Q Viow in English Two radio active substances A and B have decay constant 5A and A respectively At t 0 they have the same number of active nuclei The ratio...
- Q In the figure shown below the maximum and unknown possible minimum resistance X that can be measured by the post office box are Xmax and Xmin respectively Then the ratio...
- Q O No 22 View in English Electric charge on sphere A is equal to electric charge of sphere B The sphores are joined by conducting wire Then the wire is...
- Q 1 2 Two blocks 1 and 2 of equal mass hang from the massless frictionless pulley system in Figure 1 i If block 2 is displaced by Ay2 what is...
- Q The point A moves with a uniform speed along the circumference of a circ of radius 0 36 m and covers 30 in 0 1 s The perpendicular projection P...
- Q 1 In the arrangement shown in Fig 1 24 the masses m of the bar and M of the wedge as well as the wedge angle a are known The...
- Q D A river 2 km wide is flows at the rate of 2km h A boatman who can row a boat at a speed of 4 km h in still...
- Q 9 A river 4 0 miles wide is flowing at the rate of 2 miles hr The minimum time taken by a boat to cross the river with a speed...
- Q 3 Current falls to zero after time t 2b 4 Current changes at a rate 2b The current in a conductor varies with time t as 43 I 2t 3t...
- Q 4 In the diagram shown there are four forces acting on a block of mass 2 kg in space The acceleration of the block is 3m s in the direction...
- Q A solid cylinder attached to horizontal massless spring can roll without slipping along horizontal surface Find time period of oscillation 1 M R G Question Type Single Correct Type 2...
- Q 1 20 A car C travelling at a uniform speed of 75 kph passed another car C at rest beside the track Two minutes later C starts and accelerates uniformly...
- Q 4 The drift speed varies randomly On increasing the temperature of a conductor its 4 resistance increase because 1 Relaxation time decreases 2 Mass of the electrons increases 3 Electron...
- Q A particle of mass 100 g charge C is placed on the vertical axis of a uniformly charged ring of radius 1m This particle is executing S H M of...
- Q A string of mass per unit length is clamped at both ends such that one end of the string is at x 0 and the other end at x L...
- Q A galvanometer of resistance 1500 shows full scale deflec tion for a current of 20 mA What is the resistance that should be connected in series with it to get...
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