Physics question and answers for April 04, 2024
- Q A 500 Kg crocodile rests on flat ground. The contact area between its body and the floor is 8 square meters. The pressure at the contact area must be500 Pa625...
- Q A graphene rod and a tungsten rod have the same length and diameter and are subjected to the same force. If the graphene rod stretches by 2.50 x 10 m,...
- Q Steel beams are used for load bearing supports in a building. Each beam is 4.0 m long with a cross-sectional area of 7.5 x 10 m and supports a load...
- Q How old do scientists think the Earth is?Over 4 billion years old4 million years oldNot older than 400, 000 years old4,000 years old
- Q Bars A and B are attached to a wall on the left and pulled with equal forces to the right. Bar B, with the same length and twice the radius...
- Q A rod of cross-section S = 100 cm is held between two fixed solid walls 1m apart. The temperature of one wall is then raised, and a constant heat flux...
- Q A sphere of radius R has uniform density p = 3 g/cm. If the escape velocity from the surface of sphere is 40 m/s, then value of R is nearly...
- Q Consider a light wire of Young's modulus Y, cross-sectional area A and length L. If a constant force F, is applied at the end of the wire as shown then(A)...
- Q The deepest a WWII submarine was able to go was 450m before bursting. Calculate the net force acting on a hatch that is 1.3m x 2.5m in size.Net Force on...
- Q 18 The velocity of viscous fluid in contact with surface is 1 Same as that of the surface 2 More than that of the surface 3 Less than that of...
- Q How do we know that the "new" comets are members of the solar system and not just interstellar objects passing near the sun?A. They follow elliptical orbits.B. They are too...
- Q Capillary tube with very thin walls is suspended vertically in a cup containing water Before the capillary is suspended the cup was balanced against weights on a beam balance When...
- Q The Gardener water the plants by a pipe of diameter 1 mm The water comes out at the rate of 10 cm sec The reactionary force exerted on the hand...
- Q As shown in the figure water of density 1000kg m is flowing steadily in a pipe of non uniform cross sectional area The area at wider section is 0 2m...
- Q 9 A wooden plank is floating on water in a pool It is tethered to the botte of the pool by a string attached at mid point of an edge...
- Q Water is filled in a uniform container of area of cross section A A hole of cross sectional area a A Is made in container at a height of 20m...
- Q A lawn sprinkler has 20 holes each of cross sectional area 2 x 10 2 cm and is connected to hose pipe of cross sectional area 2 4 cm If...
- Q A vertical U tube of uniform cross section contains mercury in both of its arms A glycerine p 1 3 g cm column of length 10 cm is introduced into...
- Q A 90 kg bicyclist is coasting down a long hill that has a 10 slope His cross section area is 0 35 m his drag coefficient is 0 85 his...
- Q m upwards 8 A ball is suspended with the help of two threads inside an empty cylindrical vessel without touching its walls from two points on the walls of the...
- Q iii On the opposite sides of a wide vertical vessel filled with water two identical holes are opened each having cross sectional area S The height difference between them is...
- Q resistance becomes times 16th Page 3 Reason In parallel net resistance is less than the smallest value of individual resistance a Assertion and Reason both true and Reason is correct...
- Q Assertion Half of the ring is uniformly positively charged and another half uniformly negative charged then electric field and electric potential both zero at centre Reason At the centre of...
- Q Figure shows a U tube of uniform cross sectional area A accelerated with acceleration a as shown If d is the separation between the limbs then the difference in levels...
- Q 7 27 A J tube shown in figure 7 106 contains a volume V of dry air trapped in arm A of the tube The atmospheric pressure is H cm...
- Q An iceberg is floating in water The density of ice in the iceberg is 917 kg m 3 and the density of water is 1024 kg m 3 What percentage...
- Q A capillary tube A is dipped in water Another identical tube B is dipped in a soap water solution Which of the following shows the relative nature of the liquid...
- Q A long cylindrical tank of cross sectional area S is filled with two immiscible liquids of densities pand 2p It has two holes of cross section S 10 one is...
- Q Water flowing from one Tube to another Water is flowing through two horizontal pipes of different cross sections which are connected together In first pipe the speed of water is...
- Q 36 Water is flowing through a horizontal tube having cross sectional areas of its two ends being A and A such that the ratio 4 4 is 5 If the...
- Q A cuboidal container has dimension 50 cm X 30 cm X 100 cm it is completely filled with water having density 10 kg m Find pressure at the depth of...
- Q 4 A vessel with water is placed on a weighing pan and it reads 600 g Now a ball of mass 40 g and density 0 80 g cm3 is...
- Q The velocity of liquid v in steady flow at a location through cylindrical pipe is given by Vol 1 R where r is the radial distance of that location from...
- Q A carpenter hits a nail with a 50 N force The area of the nail head is 2 5 x 10 5 m2 The area of the pointed end of...
- Q 23 In a large rectangular water tank water is coming out of a small hole at the bottom of the tank It takes almost 5 minute to empty half of...
- Q Given density of ball p 2p and density of liquid p p The acceleration of the ball is g Solid Ball 22 a g Find the value of M N
- Q Figure shows a siphon Choose the wrong statement Po atmospheric pressure O Siphon works when h3 0 O Pressure at point 2 is P2 Po pgh3 O Pressure at point...
- Q 1 English While measuring the surface tension of a liquid by a capillary of non uniform bore its radius should be measured Question Type Single Correct Type at the lower...
- Q dius r ake to find equal ing 9 h Which of the following figure shown below A 1 V V 0 A 20Q A R h 2 S 3A 4...
- Q mple 24 A square glass plate of length 10 cm and thickness 0 4 cm weighs 40 g in air It is held vertically such that its lower edge rests...
- Q Consider the open topped tank below It is filled with a non compressible 0 viscosity fluid The plug at bottom is removed what is the fluid velocity of the fluid...
- Q An object of density d kept deep inside water of density d and released During the time it moves a vertical distance h with in the water AU A The...
- Q A spherical ball of radius r and relative density 0 5 is floating in equilibrium in water with half of it immersed in water The work done in pushing the...
- Q P27 A circular hole of radius r at the bottom of an initially full water container is sealed by a ball of mass m and radius R r The depth...
- Q A tank 5 m high is half filled with water and then is filled to the top with oil of density 0 85g cm The pressure at the bottom of...
- Q An incompressible gas flows steadily through a pipe of unknown possibly variable cross sectional area Three small holes are drilled into the pipe at locations a b c and a...
- Q 19 If water is flowing in a pipe with speed 2 m s then its kinetic energy per unit volume is 1 500 J m 2 1000 J m 3...
- Q 22 Two co axial glass tubes forming an annulus with small gap are immersed in clean water The inner and outer radii of the annulus are r and r respectively...
- Q Elasticity 9 If water is flowing in a pipe with speed 2 m s then its kinetic energy per unit volume is 1 500 J m 2 1000 J m...
- Q A cylindrical vessel of thickness 2 cm floats in a liquid as shown in figure With a depth of 8 cm immersed the vessel develops a leak in its bottom...
- Q Water of density p in a clean aquarium forms a meniscus as illustrated in the figure Calculate the difference in height h between the centre and the edge of the...
- Q Question Calculate the pressure in the hose whose absolute pressure is 1 01 x 105 N m 2 if the speed of the water in the hose increases from 1...
- Q A column of mercury of length h 10 cm is contained in the middle of a narrow horizontal tube of length 1 m closed at ends The air in both...
- Q Cross sectional area of tube at A and B are 4 cm and 2 cm respectively If speed of ideal liquid flowing in this tube at point A is 10...
- Q A solid hemisphere of radius R is immersed into a liquid c density p If the hemisphere is at a depth 2R then force exerted by liquid on the flat...
- Q cubic pool that has the edges of L is being filled by the water Water is described by the vector J vater described by the flow vector J below J...
- Q An aquarium window of dimensions 4 m by 2 m is built 0 5 m below the surface of the water How large a force is exerted by the water...
- Q A long capillary tube of radius r is put in contact with surface of a perfectly wetting liquid of density p and very low viscosity What maximum height h the...
- Q When completely immersed in water 6 gm of iron and certain quantity of lead are found to have the same weight If the densities of iron and lead are 8...
- Q A solid uniform ball having volume V and density p 2 10 kg m floats at the interface of two immiscible liquids as shown in the figure The densities of...
- Q 3 1 English Mark for review A uniform heavy plate is held horizontal resting symmetrically on two frictionless pistons each of which is placed in the opening of a symmetric...
- Q A capillary tube of radius r is placed inside the water of density po as show Liquid rises in the tube to the level H Consider a point A just...
- Q A body floats in water in a beaker such that 1 3rd of its volume is out side the water The beaker is placed in a lift which moves up...
- Q 2 gm cc and 3 gm cc are taken in three identical vessels The ratio of forces on the base of the vessels is A 1 2 3 B 6...
- Q A uniform cylindrical rod of mass m and density pois having a point mass m at its bottom end The complete arrangement is just found to be in stable equilib...
- Q Two soap bubbles of radii R and 2R in vacuum coalesce under isothermal conditions The radius of the new bubble is surface tension of soap solution is 2 5 10...
- Q A small spherical object having density 2p is placed inside the liquid of density o and connected to an ideal string of length whose other end is kept fixed so...
- Q A cylindrical rod A p L are cross sectional area density and length of roc respectively having a point mass 2m m ApL at its bottom then choose correct alternative...
- Q Two immiscible liquid of densities p and 3p are put in a container The height of each liquid is h A solid cylinder of length L and density d is...
- Q Two identical containers contains liquid of same mass m but different densitie as shown in the figure given p P P and P are pressures at the bottoms c the...
- Q A liquid of density p pushes the vertical plate of the gate towards the right Match the following column A B C D C Column l Force on the vertical...
- Q An object is fitted in a hole at base of a container as shown in figure the force due to liquid on offect is Assume no leakage of water volume...
- Q upvote Question 7 Consider a business jet like the Gulfstream G550 flying at a standard altitude of 30 000 ft and V 525 mph Assuming inviscid incompressible flow calculate the...
- Q 4 An 8kg plastic block with a specific volume of 5 69x10 4 m is fully submerged in water while kg attached to a rope What is the tension force...
- Q in its vertical wall as of side L at a depth hole of radius R at apletely filled with second from both C 7 5 In the figure shown 7...
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