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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.
| 7051. |
Why is the work done on an object moving with uniform circular motion zero? |
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Answer» Why is the work done on an object moving with uniform circular motion zero? |
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| 7052. |
A ball thrown vertically upwards with a speed of 19.6 m/s from the top of a tower returns to the earth in 6 seconds. Find the height of tower : |
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Answer» A ball thrown vertically upwards with a speed of 19.6 m/s from the top of a tower returns to the earth in 6 seconds. Find the height of tower : |
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| 7053. |
56.Q. To an ideal triatomic gas 800 cal heat energy is given at constant pressure. If vibrational mode is neglected, then energy used by gas in work done against surroundings is 1) 200 cal 2) 300 cal 3) 400 cal 4) 60 cal |
| Answer» 56.Q. To an ideal triatomic gas 800 cal heat energy is given at constant pressure. If vibrational mode is neglected, then energy used by gas in work done against surroundings is 1) 200 cal 2) 300 cal 3) 400 cal 4) 60 cal | |
| 7054. |
Which of the following object(s) is/are hot with respect to a human body at room temperature?(i)Base of a frying pan, right after cooking.(ii) Ice cream.(iii) Snow.(iv) Molten wax. |
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Answer» Which of the following object(s) is/are hot with respect to a human body at room temperature? |
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| 7055. |
Question 17It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving (i) alpha particles, (ii) neutrons? Justify your answer. |
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Answer» Question 17 It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving (i) alpha particles, (ii) neutrons? Justify your answer. |
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| 7056. |
Why work done against the gravity is negative? [2 MARKS] |
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Answer» Why work done against the gravity is negative? [2 MARKS] |
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| 7057. |
What is pascals law |
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Answer» What is pascals law |
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| 7058. |
A manometer consists of a U-shaped tube containing water. One side is connected to the apparatus and the other side is open to the atmosphere. If external pressure is 1 atm and the level of water on the open side of tube is 10 cm lower than the side connected to the apparatus. The pressure of gas is ( Assume density of water is 1 g/ml and g is 10 m/s^2, 1 atm=1.013×10^5 Pa) |
| Answer» A manometer consists of a U-shaped tube containing water. One side is connected to the apparatus and the other side is open to the atmosphere. If external pressure is 1 atm and the level of water on the open side of tube is 10 cm lower than the side connected to the apparatus. The pressure of gas is ( Assume density of water is 1 g/ml and g is 10 m/s^2, 1 atm=1.013×10^5 Pa) | |
| 7059. |
What is peat?" please write the answer in paper and then send" |
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Answer» What is peat?" please write the answer in paper and then send" |
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| 7060. |
Which of the following energy change involves frcitional force ? (a) chemical energy to heat energy (b) kinetic energy to heat energy (c) potential energy to sound energy (d) chemical energy to kinetic energy |
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Answer» Which of the following energy change involves frcitional force ? (a) chemical energy to heat energy (b) kinetic energy to heat energy (c) potential energy to sound energy (d) chemical energy to kinetic energy |
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| 7061. |
Generally, domestic electric circuits, 2 separate circuits, one for high power appliance and other for low power appliances are used.give reason. |
| Answer» Generally, domestic electric circuits, 2 separate circuits, one for high power appliance and other for low power appliances are used.give reason. | |
| 7062. |
(a) State Biot-Savart's Law. Use it to find the expression for magnetic field at the centre of a circular loop of current. (b) A circular loop of radius r, having N turns and carrying current I, is kept in the XY plane. It is then subjected to a uniform magnetic field B=Bxi+ Byj+ Bzk. Obtain expression for torque experienced by the coil. |
| Answer» (a) State Biot-Savart's Law. Use it to find the expression for magnetic field at the centre of a circular loop of current. (b) A circular loop of radius r, having N turns and carrying current I, is kept in the XY plane. It is then subjected to a uniform magnetic field B=Bxi+ Byj+ Bzk. Obtain expression for torque experienced by the coil. | |
| 7063. |
A toy car accelerates from rest at 2 ms−2 for 3 seconds. Afterwards the car begins to slow down. It travels a combined total of 27 meters before coming to rest. What is its rate of acceleration when stopping and what is the total time of the motion? |
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Answer» A toy car accelerates from rest at 2 ms−2 for 3 seconds. Afterwards the car begins to slow down. It travels a combined total of 27 meters before coming to rest. What is its rate of acceleration when stopping and what is the total time of the motion? |
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| 7064. |
The time of reverberation of a room-A is one second.36.What will be the time (in seconds) of reverberationof a room, having all the dimensions double of thoseof room-A? |
| Answer» The time of reverberation of a room-A is one second.36.What will be the time (in seconds) of reverberationof a room, having all the dimensions double of thoseof room-A? | |
| 7065. |
40. If w1 joule work is done against gravitational attraction to carry 10 kg mass from earths surface to infinity then the magnitude of work done by gravitational attraction in bringing 20 kg mass from infinity to the centre without any acceleration is w2. Now if w1=n*w2. find n |
| Answer» 40. If w1 joule work is done against gravitational attraction to carry 10 kg mass from earths surface to infinity then the magnitude of work done by gravitational attraction in bringing 20 kg mass from infinity to the centre without any acceleration is w2. Now if w1=n*w2. find n | |
| 7066. |
Question 17Write two different ways of harnessing energy from ocean. |
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Answer» Question 17 Write two different ways of harnessing energy from ocean. |
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| 7067. |
If an elephant was chasing you, its enormous mass would be most threatning. But if you moved in a zigzag path, its big mass would become your advantage. Why? |
| Answer» If an elephant was chasing you, its enormous mass would be most threatning. But if you moved in a zigzag path, its big mass would become your advantage. Why? | |
| 7068. |
What is specific gravity (on an element)? |
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Answer» What is specific gravity (on an element)? |
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| 7069. |
The fundamental unit is : (a) newton (b) pascal (c) hertz (d) second. |
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Answer» The fundamental unit is : (a) newton (b) pascal (c) hertz (d) second. |
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| 7070. |
A boy is trying to push a box on a rough horizontal floor. If the box does not move, then the correct diagram is[given: F1 is force applied by boy, F2 is force of friction] |
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Answer» A boy is trying to push a box on a rough horizontal floor. If the box does not move, then the correct diagram is |
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| 7071. |
The axial forces in the members AB & BC of the cantilever truss as shown in figure are: |
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Answer» The axial forces in the members AB & BC of the cantilever truss as shown in figure are: |
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| 7072. |
given that u and theta are the initial speed of throw and the initial angle of throw of a projectile.find instantaneous velocity when projectile is moving perpendicular to the initial directon of motion |
| Answer» given that u and theta are the initial speed of throw and the initial angle of throw of a projectile.find instantaneous velocity when projectile is moving perpendicular to the initial directon of motion | |
| 7073. |
For a displacement-time graph given below, what is the required nature of acceleration-time graph? |
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Answer» For a displacement-time graph given below, what is the required nature of acceleration-time graph? |
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| 7074. |
(a) Name the physical quantity measured in terms of horse power. (b) How is horse power related to the S.I.unit of power? |
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Answer» (a) Name the physical quantity measured in terms of horse power. (b) How is horse power related to the S.I.unit of power? |
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| 7075. |
A man of 80 kg mass is standing on the rim of a circular platform of mass 100 kg rotating about its axis. The mass of the platform with the man on its rotates at 12 r.p.m. If the man moves to the center of the platform, the rotational speed (take platform as a circular ring) |
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Answer» A man of 80 kg mass is standing on the rim of a circular platform of mass 100 kg rotating about its axis. The mass of the platform with the man on its rotates at 12 r.p.m. If the man moves to the center of the platform, the rotational speed (take platform as a circular ring) |
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| 7076. |
A wooden cube floats just inside the water, when a mass of x (in grams) is placed on it. If the mass is removed,the cube floats with a height100x(cm) above the water surface. The length of the side of cube is (densityof water is 1000 kg/m3)(1) 10 cm (2) 15 cm (3) 20 cm (4) 30 cm |
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Answer» A wooden cube floats just inside the water, when a mass of x (in grams) is placed on it. If the mass is removed, the cube floats with a height 100 x (cm) above the water surface. The length of the side of cube is (density of water is 1000 kg/m3) (1) 10 cm (2) 15 cm (3) 20 cm (4) 30 cm |
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| 7077. |
30.Figure shows two bulbs B1 and B2 resistor R and inductor L , when the switch S is turned off (a) Both B1 and B2 die out promptly (b) Both B1 and B2 die out with some delay (c) B2 dies out promptly but B1 with some delay (d) B1 dies out promptly but B2 with some delay |
| Answer» 30.Figure shows two bulbs B1 and B2 resistor R and inductor L , when the switch S is turned off (a) Both B1 and B2 die out promptly (b) Both B1 and B2 die out with some delay (c) B2 dies out promptly but B1 with some delay (d) B1 dies out promptly but B2 with some delay | |
| 7078. |
A single vertical friction pile of diameter 500 mm and length 20 m is subjected to a vertical compressive load. The pile is embedded in a homogenous sandy strata where angle of internal friction (ϕ)=30∘, dry unit weight (γd)=20 kN/m3 and angle of wall friction (δ)=2ϕ3. Considering the coefficient of lateral earth pressure (K)=2.7 and the bearing capacity factor (Nq)=25, the ultimate bearing capacity of the pile (in kN).4499 |
Answer» A single vertical friction pile of diameter 500 mm and length 20 m is subjected to a vertical compressive load. The pile is embedded in a homogenous sandy strata where angle of internal friction (ϕ)=30∘, dry unit weight (γd)=20 kN/m3 and angle of wall friction (δ)=2ϕ3. Considering the coefficient of lateral earth pressure (K)=2.7 and the bearing capacity factor (Nq)=25, the ultimate bearing capacity of the pile (in kN).
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| 7079. |
A rope lies on a table such that a part of it hangs down the table. When the length of hanging part is 1/3 of entire length the rope just begins to slide. The coefficient of friction between the rope and the table is:-1) 2/32) 1/23) 1/34) 1/6 |
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Answer» A rope lies on a table such that a part of it hangs down the table. When the length of hanging part is 1/3 of entire length the rope just begins to slide. The coefficient of friction between the rope and the table is:- 1) 2/3 2) 1/2 3) 1/3 4) 1/6 |
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| 7080. |
When a ball is thrown inside a moving bus, does it kinetic energy depend on the speed of the bus ? Explain . |
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Answer» When a ball is thrown inside a moving bus, does it kinetic energy depend on the speed of the bus ? Explain . |
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| 7081. |
A student performs an experiment using a barometer as shown in the figure below. The atmospheric pressure is given as 76 cm of Hg (h0) and the rise in height is 5 cm. What will be the pressure of the gas? |
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Answer» A student performs an experiment using a barometer as shown in the figure below. The atmospheric pressure is given as 76 cm of Hg (h0) and the rise in height is 5 cm. What will be the pressure of the gas?
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| 7082. |
Question 10An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down. |
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Answer» Question 10 An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down. |
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| 7083. |
When body floats in water with 60% volume outside .find relative density ? then what is the apparent weight in this case of solid |
| Answer» When body floats in water with 60% volume outside .find relative density ? then what is the apparent weight in this case of solid | |
| 7084. |
A body of mass 300 g kept at rest breaks into two parts due to internal force,One part of mass 200 g is found to move at a speed of 12 m/s towards the east. What will be the velocity of the other part ? |
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Answer» A body of mass 300 g kept at rest breaks into two parts due to internal force,One part of mass 200 g is found to move at a speed of 12 m/s towards the east. What will be the velocity of the other part ? |
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| 7085. |
The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a DC source that supplies a constant voltage of 1.5 volt. What is the voltage measured across the secondary coil? |
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Answer» The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a DC source that supplies a constant voltage of 1.5 volt. What is the voltage measured across the secondary coil? |
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| 7086. |
In combustion reaction :2Ag(2)Br(s)--sunlight--2Ag (s)+ Br(2) (g)Dos heat can be used on 2Ag(2)B to react |
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Answer» In combustion reaction : 2Ag(2)Br(s)--sunlight--2Ag (s)+ Br(2) (g) Dos heat can be used on 2Ag(2)B to react |
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| 7087. |
A telescope is used to view the moon. What is the angle subtended by the moon at the objective lens, if the focal length of the objective lens is 12 cm and the size of the image of the moon formed by the objective lens is 1 cm? |
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Answer» A telescope is used to view the moon. What is the angle subtended by the moon at the objective lens, if the focal length of the objective lens is 12 cm and the size of the image of the moon formed by the objective lens is 1 cm? |
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| 7088. |
In the figure shown, the ammeter reading will be independent of R2 when |
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Answer» In the figure shown, the ammeter reading will be independent of R2 when |
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| 7089. |
If intensity of sound is increased by a factor of 30, by how many decibles is the sound level increased? |
| Answer» If intensity of sound is increased by a factor of 30, by how many decibles is the sound level increased? | |
| 7090. |
A body of mass M moving with velocity v ms-1suddenly breaks into two pieces. One part having mass M/4 remains stationary, thenthe velocity of the other part will be |
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Answer» A body of mass M moving with velocity v ms-1 |
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| 7091. |
Draw neat and labelled diagrams.a. Energy transformation in solar thermal electric energy generation.b. One solar panel produces a potential difference of 18 V and current of 3 A. Discribe how you can obtain a potential difference of 72 Volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel. |
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Answer» Draw neat and labelled diagrams. a. Energy transformation in solar thermal electric energy generation. b. One solar panel produces a potential difference of 18 V and current of 3 A. Discribe how you can obtain a potential difference of 72 Volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel. |
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| 7092. |
Does inertia account for motion in straight line? |
| Answer» Does inertia account for motion in straight line? | |
| 7093. |
46.A particle projected vertically upwards returns to the ground in time T.Show the variation of velocity v with respect to time t. |
| Answer» 46.A particle projected vertically upwards returns to the ground in time T.Show the variation of velocity v with respect to time t. | |
| 7094. |
An Object is thrown vertically upwards with velocity of 20 m/s. At what height will its kinetic energy and potential energy be equal ? (g=10m/s2) |
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Answer» An Object is thrown vertically upwards with velocity of 20 m/s. At what height will its kinetic energy and potential energy be equal ? (g=10m/s2) |
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| 7095. |
13. A particle is moving in a circle of radius 'r' . If the time of one revolution is 40sec then find the ratio of displacement & distance in 2min 20sec? |
| Answer» 13. A particle is moving in a circle of radius 'r' . If the time of one revolution is 40sec then find the ratio of displacement & distance in 2min 20sec? | |
| 7096. |
What are the key elements that lead to so much variation in the physical and chemical conditions of different habitats? |
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Answer» What are the key elements that lead to so much variation in the physical and chemical conditions of different habitats? |
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| 7097. |
Match the columns: I II III (1) Mass (a) m/s2 (I) zero at the centre (2) Weight (b) kilogram (II) same everywhere (3) Gravitational acceleration (c) Nm2 kg–2 (III) remain constant in the universe (4) Gravitational constant (d) Newton (IV) depends on the altitude |
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Answer» Match the columns:
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| 7098. |
By what percent will be gravitational force between the two bodies be increased their masses are increased by 50% ? |
| Answer» By what percent will be gravitational force between the two bodies be increased their masses are increased by 50% ? | |
| 7099. |
A hammer of mass M kg falls from a height of h m,onto the top of an elastic pile of mass m kg and drives it into the ground a distance a m.Find the resistance of the ground? |
| Answer» A hammer of mass M kg falls from a height of h m,onto the top of an elastic pile of mass m kg and drives it into the ground a distance a m.Find the resistance of the ground? | |
| 7100. |
A body travels a semicircular distance of 5m. Calculate the ratio of magnitude of distance to that of displacement. |
| Answer» A body travels a semicircular distance of 5m. Calculate the ratio of magnitude of distance to that of displacement. | |
