Physics question and answers for July 12, 2024
- Q A charged particle having charge q and mass m is projected into a region of uniform electric field of strength with velocity V perpendicular to E Throughout the motion apart...
- Q ALLE A horizontal light ray passes through a prism 7 u 1 5 of angle 4 Further it is incident on a plane mirror M that has been placed vertically...
- Q Which of the following statements is are INCORRECT about reference frames In a non inertial reference frame an A isolated particle does not retain a constant velocity B C A...
- Q 3 Two copper balls each of mass 6 35g are kept at a separation of 10cm in air If one electron from every 1010 atoms is transferred from one ball...
- Q 649001 Friction Calculate the magnitude of the deceleration of a snow boarder going up a 4 67 slope assuming the coefficient of friction for waxed wood on wet snow 0...
- Q If the mass of a hydrogen atom is 1 0078 u and that of a neutron is 1 0087 u then the binding energy of 12C is very nearly equal...
- Q 5 A car travels first 1 3 of the distance AB at 30 km h next 1 3 of the distance at 40 km h and last 1 3 of...
- Q 45 A lift is coming from 8th floor and is just about t reach 4th floor Taking ground floor as origin an positive direction upwards for all quantities whic one...
- Q 3 0 5 02 10V 4 0 72 10V When a resistance of 2 ohm is connected across 36 the terminals of a cell the current is 0 5A When...
- Q SolveLancer Test A student uses a copper conductor XY of length 100 cm and moves it in a magnetic flux density of magnitude B 0 05 T with a speed...
- Q U1 376 Trajectories of two projectiles are shown in figure Let T and T be the time periods and speeds of projection Then I a T T b T T...
- Q 22 A wire of length is stretched by a force F to cause an extension x Another wire of same material and same volume but 50 larger in length than...
- Q BEGINNER S BOX particle moves on a circular path of radius r It completes one revolution in 40 s Calculate distance Jacement in 2 min 20 s from point P...
- Q of the sur or a lens of roca length 10cm is silvered as shown in figure Radius of curvature of silvered surface is 10cm At a given instant if speed...
- Q In transformer power of secondary coil is 1 less than primary coil 2 more than primary coil 3 more in step up and less in step down than primary coil...
- Q Three uncharged capacitors of capacitane 1 C 2uF and C 3 F are connected as shown in figure to one another and to points A B and D poten tial...
- Q The switch shown in the figure has been opened for long time and closes at t 0 Find V t for all t 8A 1 VR 10Q2 X t 0...
- Q A particle direction is moving on a straight line along A graph between square of velocity position is drawn as shown Find t magnitude of acceleration in m s of...
- Q Two coherent monochromatic light waves of amplitude 3A and 2A interfere at a point on screen having a phase difference of rad The resultant intensity at that point will 3...
- Q 1 Assertion A The drift velocity of electrons in a metallic conductor decreases with rise of temperature of conductor Reason R On increasing temperature the collision of electrons with lattice...
- Q given We have to find the total resistance of i t The answer to this is that in this circuit short circuit will happen please give a detailed solution of...
- Q One mole of an ideal gas having initial volume V pressure 2P and temperature T undergoes a cyclic process ABCDA as shown below The net work done in complete cycle...
- Q 1 A 25KVA single phase transformer has 500 turns on the primary and 50 turns on the secondary winding The primary is connected to a 2500V 50Hz AC supply The...
- Q A fighter plane enters inside the enemy territory at time t 0 with velocity vo 250 ms and moves horizontally with constant acceleration a 20ms 2 see figure An enemy...
- Q Q21 The spectrum of a black body at two temperatures 27 C and 327 C is shown in the figure Let A and A be the areas under the two...
- Q 157 Two bodies are projected from the same point with equal speeds in such directions that they both strike the same point on a plane whose inclination is If x...
- Q 31 The reactance of a capacitor is 2 ohm and that of an inductor is 3 ohm 1 poin If they are connected in series with a resistor of 1...
- Q The atom contains part of an element is called nucleus The extranuclear part of the charged are called isotopes charged Atoms of the same elements with different number of Nucleus...
- Q In a given set up a compound microscope is forming the image of an object placed at a distance x from its objective at infinity If the focal lengths of...
- Q The following histogram represents the binding energy per particle B E A in MeV as a function of th mass number A of a nucleus B E A 2 A...
- Q For the equilibrium condition shown the chords are strong enough to withstand a maximum tension 100 N What is the largest value of W in Newton that can be suspended...
- Q Q1 A stone is accelerated upwards by a cord whose breaking strength is three times the weight of the stone The maximum acceleration with which the stone can be moved...
- Q When a pin is moved along the principal axis of a small concave mirror the image position coincides with the object at a point 0 5 m from the mirror...
- Q The disc of mass M with uniform surface mass density is shown in the figure The centre of mass of the quarter disc the shaded area is at the position...
- Q in reality I am rest outside an I am inertial frame of reference I get a valid equation but when acclerated person saw me he saw I am non innertial...
- Q Identify the correct statement regarding Topologies of network You can select multiple correct answers In a mesh topology installation and management are easy In a ring topology if one of...
- Q Two observers A B are observing a fish in water u 4 3 Observer A is observing directly but observer B is observing through a lens of focal length 20...
- Q ss and radius of the Earth are 6 0 x 1024 kg and 6 4 x 106 m respectively The accelerat ced in the body of mass 1 kg and...
- Q Intensity wavelength graph of x ray is shown in the figure If accelerating potential is increased then I 1 Question Type Single Correct Type 2 kt 3 d and d...
- Q Unstable radioactive nuclei of A are being formed at the rate of r atoms per second which have a disintegration constant of per second At t 0 there were no...
- Q Q A roller of weight W 4450 N rests on a smooth inclined plane and is kept from rolling down by a string as shown in the figure Find the...
- Q In the figure shown battery I has em nal resistance 102 Battery 2 has emf 2V ar internal resistance 302 The wires have negligib resistance What is the potential difference...
- Q Pick up the correct statement regarding bandwidth delay product The time required for transmission of message depends on the size of the message OIt is queuing time needed for each...
- Q A body cools from 60 C to 40 C in 10 minutes If the room temperature is 10 C and assuming Newton s cooling law holds good find the time...
- Q 30 A monkey can jump a maximum horizontal distance of 20 m Then the velocity of the monkey is a 10 ms c 20 ms b 14 ms 1 1...
- Q Consider a conductor of variable cross section in which current is flowing from cross section 1 to 2 Then which of the following statement is correct A current passing through...
- Q Circuit diagram of metre bridge is shown in figure The null point is found at a distance of 40 cm from A If now a resistance of 120 is connected...
- Q A capacitor of capacitance 1 F withstands the maximum voltage 6 kV while a capacitor of 2 F withstands the maximum voltage 4 kV What maximum voltage will the system...
- Q Deuterium fusion reaction is given by H H 2He n 3 27 MeV How long can a 100 W electric lamp be kept glowing by the fusion of 2 kg...
- Q A man is running a race on a straight track where a wind is blowing with constant velocity perpendicular to the track in horizontal direction Just after man starts running...
- Q compound microscope has angular magnification equal to 100 If the object subtends an angle of 0 06 to the eye then then angle subtended by the image to the eye...
- Q Select true statement for repeater A repeater is a regenerator not an amplifier A A repeater has a table used in filtering decisions Repeaters can operate in physical link as...
- Q The current I through the 4ohm resistor in the network sh own in figure is The current I through the 40 resistor in the network shown in figure is S...
- Q Identify the correct statements in context of presentation layer Statement 1 In this layer the number of bits contained in the information is reduced Statement 2 It determines the transmission...
- Q Q3 A wire with circular cross section is melt and again streched into a wire with square cross section of sar length New ressistance of wire compared to old will...
- Q What is the purpose of gateway O None of the mentioned purpose gateways are used O The forwarding of the data packet is done from one router to the other...
- Q 0 A person standing on the floor of an elevator 10 drops a coin The coin reaches the floor in time t if the elevator is at rest and in...
- Q The radius of a charged conducting sphere P is half that of a conducting sphere Q They are connected by a conducting wire The ratio of the electric field on...
- Q Find the angular frequency of SHM of block of mass m for small oscillation of light rod BD Consider rod is vertical and springs relaxed in initial state RE k...
- Q 4 balance cannot be obtained The length of a potentiometer wire is A cell of 38 emf E is balanced at a length 1 3 from the positive end of...
- Q A straight conductor and a conducting square loop of side a are kept as shown in the figure If the distance between the centre of the loop and the straight...
- Q In the metre bridge experiment resistances are 39 27 g v f u fara connected as shown in the following figure The balancing length is 55 cm Now an unknown...
- Q The advantage of circuit switching is More bandwidth is required in setting up dedicated channels O It can be used to transmit any other data even if the channel is...
- Q A rod AB slides on V shaped wire with speed v in magnetic field B such that at an instant OA OB L If the induced emf in the loop...
- Q A copper wire is length and radius r is nickel plated till its final radius is R and length 1 If the specific resistance of nickel and copper be K...
- Q A conducting rod of length is rotating with angular velocity w about axi through end O and perpendicular to the rod A uniform magnetic field Bo exists out of the...
- Q of 10 m s in a direction 45 from the horizontal y direction on the smooth inclined plane Calculate the magnitude v of its velocity in m s after 2...
- Q If the angular dispersion produced by a prism is e for a wavelength 4000 then the angular dispersion for a wavelength 8000 may be A O e O 0 O...
- Q 214 Electrons in a conductor are moving randomely due to thermal energy this making it s average velocity zerc and thus displacement On applying external electrical field they start moving...
- Q Computer X can communicate with computer Y by using DNS protocol and at the same time X communicate with computer Z by using SMTP for this process which addressing is...
- Q Mark the responsibility of network Layer You can select multiple correct answers Responsible for the source to destination delivery of individual packet from source host to the destination host Responsible...
- Q A bi convex thin lens of glass focal length in air is 20 cm Now one of its convex face is silvered to make equivalen mirror In case i this...
- Q For ground to ground projectile time taken b a particle to go from point O to point C is and during the same motion time taken by t particle to...
- Q Identify the correct statements about Routers You can select multiple correc answers Router is internetworking device and internet uses routers to connect LANs and WANS Router is three layer device...
- Q A network with bandwidth of 10 Mbps can pass only an average of 24 000 frames per minute with each frame carrying capacity an average of 10 000 bits What...
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