Physics question and answers for September 01, 2024
- Q 17 Water is filled up to a height h in a beaker of radius R as shown in the figure The density of water is p tension of water is...
- Q A body of mass 1 kg is moving in a vertical circular path of radius 1 m The difference in kinetic energy at lowest and highest position is g 10...
- Q A thin wire is bent in the form of a ring of diameter 3 0 cm The ring is placed horizontally on the surface of som solution and then raised...
- Q The maximum speed with which a car is driven round a curve of radius 12 5 without skidding with coefficient of friction between tyres and roadway 0 2 is 12...
- Q A cyclist is riding at speed of 10 m s takes a turn on a horizontal circular road radius 103 m without skidding What is his angle of inclination to...
- Q A spherical liquid drop of radius R is divided into 8 equal droplets If the surface tension is T then work done in th process will be 1 2TR T...
- Q Two parallel glass plates are dipped partly in the liquid of density d keeping them vertical If the distance betwe the plates is x Surface tension for liquid is T...
- Q A particle is vibrating in a simple harmonic motion with an amplitude of 4 cm At what displacement from the equilibrium position is its energy half potential and half kinetic...
- Q A thin metal disc of radius r floats on water surface and bends the surface downwards along the perimeter making a angle with vertical edge of the disc If the...
- Q A block of mass 2 kg is kept on the floor The coefficient of static friction between block and floor is 0 2 If a force of 3 N is...
- Q A body of mass m strikes a stationary body of mass M and undergoes an elasti collision After collision m has speed one third of its initial speed The ratio...
- Q A capillary tube of radius R is immeresed in water and water rises in it to a height H Mass of water in capillary tube is M if the radius...
- Q Which of the following statement is wrong Torque in rotational motion is analogue to force in linear motion Couple acting on an object can produce linear acceleration For an extended...
- Q Two skates A and B of weights 40 kg wt and 60 kg wt respectively are facin each other 5 m apart Then they pull a light rope stretched between...
- Q A wheel initially at rest is rotated with uniform angular acceleration The wheel rotates through angle 0 in first 10 seconds and through additional angle of 02 in next 10...
- Q A particle of mass M is situated at centre of a spherical shell of same mass wit adius R The change in gravitational potential when mass is taken to surface...
- Q Match the value of moment of inertia of structures in List I with corresponding results in List II List l List II P Q R 4 30 2R M R...
- Q Water rises in a capillary tube to a height h it will rise to a height more than h 1 on the surface of sun 3 at the poles 2...
- Q When a steady torque acts on a rotating body rigid the body about fixed axis Gets linear acceleration only Gets an angular acceleration Continues to rotate at steady rate Nong...
- Q There is a horizontal film of soap solution On it a thread is placed in the form of a loop The film is pierced inside the loop and the thread...
- Q 4 Red green white The effective area of a black body is 0 1 m and its temperature is 100 K The amount of radiations emitted by min is 1...
- Q The wettability of a surface by a liquid depends primarily on 1 surface tension 2 density angle of contact between the surface and the liquid 4 viscosity INEET 201
- Q Three liquids of densities p p2 and p with p p p3 having the same value of surface tension T rise to the same NEET II 2016 height in three...
- Q A body of mass M rises to height from earth surface where R is radius of h earth If g be acceleration due to gravity on earth surface increase in...
- Q D Water rises in a vertical capillary tube upto a length of 10 cm If the tube is inclined at 45 the length of water column risen in the tube...
- Q A plate of mass M length b and breadth a is initially lying on horizontal floor with length parallel to floor and breadth perpendicular The work done to erect on...
- Q is tied slightly loose to a wire frame as shown in the figure And the frame is dipped into a soap sor taken out The frame is completely covered with...
- Q Explain why capacitance should be inversely proportional to the separation between the plates of a capacitor a Capacitance is directly proportional to the electric field which is inversely proportional to...
- Q A man pulls a 20 kg mass slowly upwards with the help of light string passing over a frictionless pulley as shown in figure The normal reaction by floor on...
- Q In a vessel equal masses of alcohol sp gravity 0 8 and water are mixed together A capillary tube of radius 1 mm is dipped vertically in it If the...
- Q A homogenous cylinder of mass M and radius R is pulled on a horizontal plane by a horizontal force F acting through its centre of mass Assuming pure rolling angular...
- Q 8 An old pinball game machine starts play with a handle pulled back a distance x to compress a spring with a metal ball at rest on the end When...
- Q A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of 2 10 N to keep the wire in...
- Q After heating two pieces of iron they are taken in dark room One of them appears red and another appears blue then 1 The temp of red piece will be...
- Q A closed cylindrical tube containing some water not entire filled lies in a horizontal plane If tube is rotated about a perpendicular bisector the moment of inertia of water about...
- Q Three particles of same mass lie in x y plane The x y co ordinates of their positions are 1 1 2 2 and 3 3 respectively The x y...
- Q Potentiometer can be used to measure emf of any cell more effectively than voltmeter because OIt works on deflection method OIt use a large current to measure emf OIt draws...
- Q 3 10 6 N A proton and an a particle enter a uniform magnetic field perpendicular with the same speed If proton takes 20 s to make 5 revolutions then...
- Q 1 A In The spectral emissive power of a black body at a temperature of 6000K is maximum at 5000 A If the is increased by 10 then the decrease...
- Q Fraunhofer lines are found in 1 Emission spectrum of the elements present in photosphere 2 The absorption spectrum of the elements present in photosphere 3 The emission spectrum of the...
- Q The additional kinetic energy to be provided to a satellite of mass M revolving around a planet of mass Mo to transfer it from a circular orbit of radius R...
- Q A conducting wire is bent to form a quarter of circle of radius r and moved in a uniform magnetic field of induction B as shown in the figure The...
- Q Two identical calorimeters of negligible heat capacities are filled with two liquids A B whose densities are in the ratio 4 3 The ratio of times taken in cooling from...
- Q The ratio of masses of two copper spheres of identical surfaces is 8 1 If their temperatures are 2000K and 1000 respectively then the ratio of energies radiated per second...
- Q 1 1 2 2 5 6 3 4 3 4 5 8 Blackened metal foil receives heat from a heated sphere placed at a distance r from it It is...
- Q Diameter of human eye lens is 2 mm What will be the minimum distance between two points to resolve them which are situated at a distance of 50 meter from...
- Q The acceleration due to gravity on surface of moon is gm The moon is assumed to be sphere of uniform mass density p and radius Rm The density of moon...
- Q A solid body is heated upto very high temperatures As we go on heating its brightness increases and it appears w at the end The sequenc of the colour observed...
- Q wo bodies have their moments of inertia I and 21 respectively about their axes of rotation I Leir kinetic energies of rotation are equal their angular momenta will be in...
- Q In millikan oil drop experiment a charged drop fall with a terminal velocity V If an electric field E applied vertically upwards it moves with termina velocity 2V in upward...
- Q The intensity of heat radiation by a point source measured by a thermopile placed at a distance d is I If the distanc thermopoile is doubled then the intensity of...
- Q 1 6000K 2 5500K 3 580 The rate of a cooling of a heated solid sphere is R cal min If it is divided into two hemispheres the rate of...
- Q If an electrical circuit is analogous to a water tank then battery voltage would be comparable to O rate of water flow O O pressure between top and bottom of...
- Q 4 32 5 C 1 16 5 C 2 22 5 C 3 28 5 C Which of the following surfaces will absorb maximum radiant energy 1 Black 2 Rough...
- Q Prevost s theory of heat exchange tells that a body radiates thermal energy 1 At temperatures higher than that of surrounding only 2 At temperature lower than that of surroundings...
- Q The rate of emission of energy by a unit area of a body is 10 watt and that of sun is 10 watt The emissive power the body is 0...
- Q A particle moves with a constant velocity parallel to the x axis Its angular momentum with respect to origin Remains constant Goes on increasing Goes on decreasing Constant in magnitude...
- Q 4 If Assertion Reason both are false The temperature of a body is increased from 73 C to 327 C Then the ratio of emissive power is AIIMS 2 3...
- Q Ro The acceleration due to gravity at poles and at equator is go and ge respectively f earth were a sphere of radius Re and rotating about axis with angular...
- Q Reflection and absorption coefficients of a given surface at 0 C for a fixed wavelength are 0 5 each At the same temperature and wavelength the transmission coefficient of surface...
- Q cal cm sec C and 0 016 cal cm sec C then the temperature of the junction is 1 40 C 2 60 3 100 C 4 50 C Two...
- Q 1 500A 2 5000 A 3 50000 A 4 500000 A The rate of cooling of a sphere of thermal capacity 1000 cal K is 400 J s its rate...
- Q The average translational kinetic energy of one mole of 02 molecules molar mass 32 at a particular temperature is 0 048 eV The internal energy of one mole of N2...
- Q Three rods A B and C of same length and same cross section area are joined as shown in the figure Their thermal conductivities are in the ratio 1 2...
- Q Which of the following quantities don t depend on the choice of zero potential O Potential at a point Potential difference between the points O Total potential energy of two...
- Q The ends of the two rods of different materials with their thermal conductivities radii of cross section and lengths in the ratio 1 2 are maintained at the same temperature...
- Q If the radius of sun is R radius of the orbit of earth about the sun is R and ois St radiations falling per second on a unit area of...
- Q 1 2 rl W trl cost W 3 2 rl cost The radii of the two columns is U tube are r and r When a liquid of density p...
- Q The r m s velocity of hydrogen molecules at tempreature T is seven times the r m s velocity of nitrogen molecules at 300 K This temperature T is Molecular...
- Q A cylindrical tube L 125 cm is resonant with a tuning fork of frequency 330 Hz If it is filling by water then to get resonance again minimum length of...
- Q Consider the circuit below E 48 0 V internal resistance is negligible R 102 C 5 F and C 10 F After the capacitors reach their final charges charge on...
- Q A flywheel is rotating about a fixed axis and has kinetic energy of 450 J when it angular speed was 30 rad s1 The moment of inertia of wheel about...
- Q A long metallic bar is carrying heat from one of its ends to the other end under steady state The variation of temperature 8 along the length x of the...
- Q beam of unpolarized light passes through two ideal polarizing filters with different ientations as shown in the figure What is the ratio of the final intensity of the beam to...
- Q English Two particles of equal charge after being accelerated through the same potential difference enter in uniform transverse magnetic field and describe circular paths of radii R and R respectively...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!