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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 7901. |
A pebble was thrown horizontally at a speed of 3m/s , took 0.8 second to hit the water. From what height was the pebble thrown |
| Answer» A pebble was thrown horizontally at a speed of 3m/s , took 0.8 second to hit the water. From what height was the pebble thrown | |
| 7902. |
Water flows through a horizontal tube of variable cross section. The area of cross section at A and B are 4 mm2 and 2 mm2 respectively. If 1 cc of water enters per second through A, find the speed of water at B? |
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Answer» Water flows through a horizontal tube of variable cross section. The area of cross section at A and B are 4 mm2 and 2 mm2 respectively. If 1 cc of water enters per second through A, find the speed of water at B?
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| 7903. |
How is it that bats are able to fly at night without colliding with other objects ? |
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Answer» How is it that bats are able to fly at night without colliding with other objects ? |
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| 7904. |
What is the value of linear velocity, if = 3i-4j+k and r=5i-6j+6k |
| Answer» What is the value of linear velocity, if = 3i-4j+k and r=5i-6j+6k | |
| 7905. |
The main scale reading of a vernier calliper is obtained as 3.2 cm for an object placed in it. If the 4th division of the vernier scale coincides with a division on the main scale, and the magnitude of the positive zero error is 0.03 cm, what is the true length of the object in cm? Take L.C. = 0.01 cm. |
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Answer» The main scale reading of a vernier calliper is obtained as 3.2 cm for an object placed in it. If the 4th division of the vernier scale coincides with a division on the main scale, and the magnitude of the positive zero error is 0.03 cm, what is the true length of the object in cm? Take L.C. = 0.01 cm. |
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| 7906. |
A vertical. U-tube of uniform inner cross-section contains mercury in both sides of its arirs. A water { (density =1g/cm^3) column of length 20cm is poured into one of its arms. Oil of unknown density is poured into the other arm upto a height { of 19.5cm such that upper surfaces of oii and water are in the same horizontal level. The density of oil is approximately (Density of mercury { is 13.6g/cm^3 ) { is 13.6g/cm^3 ) ash Educational Services Limited - |
| Answer» A vertical. U-tube of uniform inner cross-section contains mercury in both sides of its arirs. A water { (density =1g/cm^3) column of length 20cm is poured into one of its arms. Oil of unknown density is poured into the other arm upto a height { of 19.5cm such that upper surfaces of oii and water are in the same horizontal level. The density of oil is approximately (Density of mercury { is 13.6g/cm^3 ) { is 13.6g/cm^3 ) ash Educational Services Limited - | |
| 7907. |
Rate of change of momentum = Δp/Δt So what does this Δ means? |
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Answer» Rate of change of momentum = Δp/Δt So what does this Δ means? |
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| 7908. |
If all objects on the equator of earth feel weightless, then the duration of the day will nearly become(Take g=10 m/s2) |
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Answer» If all objects on the equator of earth feel weightless, then the duration of the day will nearly become |
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| 7909. |
When you are applying force on an object, due to movement there would be kinetic energy generated and the energy that you have generated gets transferred into the object and the object begins to move. Is that correct? |
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Answer» When you are applying force on an object, due to movement there would be kinetic energy generated and the energy that you have generated gets transferred into the object and the object begins to move. Is that correct? |
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| 7910. |
A conductor is connected across the source of 200 V and it’s resistance offered is 100 ohm. The resistivity of the material of the conductor is 100 x 108 Ohm meter and its length is 10 meter. Calculate the current in the conductor if the area of cross section of the conductor is 1 mm2. |
| Answer» A conductor is connected across the source of 200 V and it’s resistance offered is 100 ohm. The resistivity of the material of the conductor is 100 x 108 Ohm meter and its length is 10 meter. Calculate the current in the conductor if the area of cross section of the conductor is 1 mm2. | |
| 7911. |
87. A telescope with objective of focal length 60 cm and eye piece of focal length 5 cm is focused on a far distance object such that the parallel rays emerge from eye piece . If object subtends an angle 2^° on objective, then angular width of the image is |
| Answer» 87. A telescope with objective of focal length 60 cm and eye piece of focal length 5 cm is focused on a far distance object such that the parallel rays emerge from eye piece . If object subtends an angle 2^° on objective, then angular width of the image is | |
| 7912. |
Calculate the amount of work done required in moving 14×1020 electrons across two points of a wire with a potential difference of 28 V. |
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Answer» Calculate the amount of work done required in moving 14×1020 electrons across two points of a wire with a potential difference of 28 V. |
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| 7913. |
A satellite is revolving around a planet of mass M in an elliptical orbit of semi major axis a. The orbital speed of the satellite when it is at a distance from the planet will be (Consider planet is at one focus of the Orbit) |
| Answer» A satellite is revolving around a planet of mass M in an elliptical orbit of semi major axis a. The orbital speed of the satellite when it is at a distance from the planet will be (Consider planet is at one focus of the Orbit) | |
| 7914. |
A wet cloth weighs 5 Kg. After drying, its weight reduces to 4300 gm. How much did the water in the wet cloth weigh? |
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Answer» A wet cloth weighs 5 Kg. After drying, its weight reduces to 4300 gm. How much did the water in the wet cloth weigh? |
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| 7915. |
Two different metal rods of the same length their ends kept at the same temperatures θ1 and θ2 with θ2 > θ1 If A1 and A2 are their cross-sectional area and K1 and K2 their thermal conductivities, the rate of flow of heat in the two rods will be the same if |
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Answer» Two different metal rods of the same length their ends kept at the same temperatures θ1 and θ2 with θ2 > θ1 If A1 and A2 are their cross-sectional area and K1 and K2 their thermal conductivities, the rate of flow of heat in the two rods will be the same if |
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| 7916. |
Do all EM waves travel at same speed? |
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Answer» Do all EM waves travel at same speed? |
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| 7917. |
The force due to the magnetic field on a current carrying conductor is _______ to the magnetic field and_________ to the current. |
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Answer» The force due to the magnetic field on a current carrying conductor is _______ to the magnetic field and_________ to the current. |
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| 7918. |
In a hydrogen discharge tube, it is observed that through a given cross-section 3.13×1015 electrons are moving per second from right to left and 3.12×1015 protons are moving from left to right per second. The electric current in the discharge tube and its direction will be |
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Answer» In a hydrogen discharge tube, it is observed that through a given cross-section 3.13×1015 electrons are moving per second from right to left and 3.12×1015 protons are moving from left to right per second. The electric current in the discharge tube and its direction will be |
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| 7919. |
What is free fall give me the diagramatic explanation? |
| Answer» What is free fall give me the diagramatic explanation? | |
| 7920. |
How many types of fluid flows are known? |
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Answer» How many types of fluid flows are known? |
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| 7921. |
State two properties of ultrasound that make it useful to us. |
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Answer» State two properties of ultrasound that make it useful to us. |
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| 7922. |
A metal wire of linear mass density of 9.8 g/m is stretched with a tension of 10 kg-wt betweentwo rigid supports 1 metre apart. The wire passes at its middle point between the poles of a permanent magnet, and it vibrates in resonance when earrying an alternating current of frequencyn. The frequency n of the alternating source is(A) 25 Hz(C) 100 Hz(B) 50 Hz(D) 200 Hz |
| Answer» A metal wire of linear mass density of 9.8 g/m is stretched with a tension of 10 kg-wt betweentwo rigid supports 1 metre apart. The wire passes at its middle point between the poles of a permanent magnet, and it vibrates in resonance when earrying an alternating current of frequencyn. The frequency n of the alternating source is(A) 25 Hz(C) 100 Hz(B) 50 Hz(D) 200 Hz | |
| 7923. |
A block of length 200 mm is machined by a slab milling cutter 34 mm in diameter. The depth of cut and table feed are set at 2 mm and 18 mm/minute, respectively. Considering the approach and the over travel of the cutter to be same, the minimum estimated machining time per pass is minutes |
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Answer» A block of length 200 mm is machined by a slab milling cutter 34 mm in diameter. The depth of cut and table feed are set at 2 mm and 18 mm/minute, respectively. Considering the approach and the over travel of the cutter to be same, the minimum estimated machining time per pass is |
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| 7924. |
In the poem ‘The Solitary Reaper’ to whom does the poet say ‘Stop here or gently pass’? (i) to the people cutting corn (ii) to himself (iii) to the people who make noise (iv) to all the passers by |
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Answer» In
(i)
(ii)
(iii)
(iv)
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| 7925. |
4. What is raoult's law ? |
| Answer» 4. What is raoult's law ? | |
| 7926. |
If a man jumps out of the boat in the forward direction, the boat will move: |
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Answer» If a man jumps out of the boat in the forward direction, the boat will move: |
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| 7927. |
Standing waves are produced in a 10 m long stretched string. If the string vibrates in 5 segments and the wave velocity is 20 m/s, the frequency is [CBSE PMT 1997; AIIMS 1998; JIPMER 2000] |
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Answer» Standing waves are produced in a 10 m long stretched string. If the string vibrates in 5 segments and the wave velocity is 20 m/s, the frequency is [CBSE PMT 1997; AIIMS 1998; JIPMER 2000] |
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| 7928. |
A car is moving with a velocity 20m per s when brakes are spoiled to retard at a rate of 2m per s. What will be the velocity of the car after 5 s of applying brakes |
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Answer» A car is moving with a velocity 20m per s when brakes are spoiled to retard at a rate of 2m per s. What will be the velocity of the car after 5 s of applying brakes |
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| 7929. |
An Australian humpback whale emits a SONAR pulse, which returns from a predator located at a distance of x metre in 2 seconds. If the speed of sound in sea water is 1531 m/s, then the value of x is |
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Answer» An Australian humpback whale emits a SONAR pulse, which returns from a predator located at a distance of x metre in 2 seconds. If the speed of sound in sea water is 1531 m/s, then the value of x is |
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| 7930. |
An object thrown vertically up from the ground passes the height 5m twice in an interval of 10 seconds . What is it's time of flight A) 28 s B86s C)104s D)72s |
| Answer» An object thrown vertically up from the ground passes the height 5m twice in an interval of 10 seconds . What is it's time of flight A) 28 s B86s C)104s D)72s | |
| 7931. |
The various steps in the food chain are called____. |
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Answer» The various steps in the food chain are called____. |
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| 7932. |
If the distance between two masses is increased by a factor of 4, by what factor would the mass of one of them have to be altered to maintain the same gravitational force |
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Answer» If the distance between two masses is increased by a factor of 4, by what factor would the mass of one of them have to be altered to maintain the same gravitational force |
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| 7933. |
An object moves along x-axis such that its position varying with time t is given as x = 4t-t2 . The distance travelled by the objects from t=0 to t=3 sec is |
| Answer» An object moves along x-axis such that its position varying with time t is given as x = 4t-t2 . The distance travelled by the objects from t=0 to t=3 sec is | |
| 7934. |
Is displacement time graph and position time graph same ? |
| Answer» Is displacement time graph and position time graph same ? | |
| 7935. |
The odometer of a vehicle measures a quantity whose SI unit is_______. |
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Answer» The odometer of a vehicle measures a quantity whose SI unit is_______. |
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| 7936. |
Define and explain in detail the following terms 1 ) interstellar medium 2 ) intergalactic medium 3 ) St.Elmo's fire |
| Answer» Define and explain in detail the following terms 1 ) interstellar medium 2 ) intergalactic medium 3 ) St.Elmo's fire | |
| 7937. |
why is r++r-=a/2 in nacl? |
| Answer» why is r++r-=a/2 in nacl? | |
| 7938. |
Question 21Should the resistance of an ammeter be low or high? Give reason. |
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Answer» Question 21 |
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| 7939. |
55. A body of mass 10 kg moving with velocity "v" collide with another body of mass 1kg which is at rest. Collision is elastic. Find ratio of kinetic energies. |
| Answer» 55. A body of mass 10 kg moving with velocity "v" collide with another body of mass 1kg which is at rest. Collision is elastic. Find ratio of kinetic energies. | |
| 7940. |
What are magnetic field lines? |
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Answer» What are magnetic field lines? |
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| 7941. |
What makes a body to float or sink in a liquid? |
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Answer» What makes a body to float or sink in a liquid? |
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| 7942. |
The minimum distance between the source of a sound and reflecting surface to hear an echo at 22 ∘C is |
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Answer» The minimum distance between the source of a sound and reflecting surface to hear an echo at 22 ∘C is |
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| 7943. |
does rms velocity depend on pressure considering the expression v =root 3 \ast pressure by density |
| Answer» does rms velocity depend on pressure considering the expression v =root 3 \ast pressure by density | |
| 7944. |
In the given system, if we change A1 into 5A1 and F1 into F1/2, then the pressure at B piston changes from P to P0. Calculate the ratio of P and P0. |
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Answer» In the given system, if we change A1 into 5A1 and F1 into F1/2, then the pressure at B piston changes from P to P0. Calculate the ratio of P and P0. |
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| 7945. |
A hot air balloon is carrying some passengers, and a few sandbags of mass 1 kg each so that its total mass is 480 kg. Its effective volume giving the balloon its buoyancy is V. The balloon is floating at an equilibrium height of 100 m. When N number of sandbags are thrown out, the balloon rises to a new equilibrium height close to 150 m with its volume V remaining unchanged. If the variation of the density of air with height h from the ground is ρ(h)=ρ0ehho, where ρ0=1.25 kg m−3 and h0=6000 m, the value of N is |
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Answer» A hot air balloon is carrying some passengers, and a few sandbags of mass 1 kg each so that its total mass is 480 kg. Its effective volume giving the balloon its buoyancy is V. The balloon is floating at an equilibrium height of 100 m. When N number of sandbags are thrown out, the balloon rises to a new equilibrium height close to 150 m with its volume V remaining unchanged. If the variation of the density of air with height h from the ground is ρ(h)=ρ0ehho, where ρ0=1.25 kg m−3 and h0=6000 m, the value of N is |
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| 7946. |
It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds which caused this lightning. Given, speed of light = 3×108 ms−1 and speed of sound = 340 ms−1. |
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Answer» It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds which caused this lightning. Given, speed of light = 3×108 ms−1 and speed of sound = 340 ms−1. |
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| 7947. |
Calculate the potential difference across the ends of a wire with resistance 2 ohms when a current of 1.5 A passes through it. |
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Answer» Calculate the potential difference across the ends of a wire with resistance 2 ohms when a current of 1.5 A passes through it. |
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| 7948. |
A body falls freely from the top of tower .It covers 36% of the total height in the last second before striking the ground level.The height of the tower i |
| Answer» A body falls freely from the top of tower .It covers 36% of the total height in the last second before striking the ground level.The height of the tower i | |
| 7949. |
Derive the following equation of motion by the graphical method :v2=u2+2awhere the symbols have their usual meanings. |
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Answer» Derive the following equation of motion by the graphical method : v2=u2+2a where the symbols have their usual meanings. |
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| 7950. |
Q. When we kick a stone, we get hurt. Due to which of the following properties of stone does it happen ? (1) Inertia(2) Velocity(3) Reaction (4) Momentum |
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Answer» Q. When we kick a stone, we get hurt. Due to which of the following properties of stone does it happen ? (1) Inertia (2) Velocity (3) Reaction (4) Momentum |
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