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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.
| 4801. |
The surface tension of a soap solution is 0.05 Nm-1. How much work is done to produce a soap bubble of radius 0.03 m? |
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Answer» The surface tension of a soap solution is 0.05 Nm-1. How much work is done to produce a soap bubble of radius 0.03 m? |
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| 4802. |
2 identical short magnets at a distance d1=2 m apart are placed with their magnetic moment parallel to each other.Now keeping same direction of magnetic moment they are placed at d2=3m apart. By which factor force between them changes? |
| Answer» 2 identical short magnets at a distance d1=2 m apart are placed with their magnetic moment parallel to each other.Now keeping same direction of magnetic moment they are placed at d2=3m apart. By which factor force between them changes? | |
| 4803. |
If area of crossection is doubled and the force remains same, then what will be the magnitude of pressure |
| Answer» If area of crossection is doubled and the force remains same, then what will be the magnitude of pressure | |
| 4804. |
There are 3 friends A, B & C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. What factor/factors make the sounds different? |
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Answer» There are 3 friends A, B & C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. What factor/factors make the sounds different? |
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| 4805. |
What should be the position of charge q = 5μC for it to be in equilibrium on the line joining two charges q1 = – 4 μC and q2 = 16 μC separated by 9 cm. Will the position change for any other value of charge q? |
| Answer» What should be the position of charge q = 5μC for it to be in equilibrium on the line joining two charges q1 = – 4 μC and q2 = 16 μC separated by 9 cm. Will the position change for any other value of charge q? | |
| 4806. |
Initial velocity of a particle is u (at t = 0) and the acceleration f is given by at . Then select proper option. A. v=u + at/2 B. v=u+ at C. v=u+ at |
| Answer» Initial velocity of a particle is u (at t = 0) and the acceleration f is given by at . Then select proper option. A. v=u + at/2 B. v=u+ at C. v=u+ at | |
| 4807. |
When a plastic comb is rubbed with hair, it acquires some charges due to which it attracts tiny pieces of paper. The type of charge, which the comb acquires from the hair is ___. |
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Answer» When a plastic comb is rubbed with hair, it acquires some charges due to which it attracts tiny pieces of paper. The type of charge, which the comb acquires from the hair is |
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| 4808. |
Two objects rubbed against each other acquire charge.a. What is the relationship between the charges acquired by the two objects?b. What action does rubbing cause, because of which the objects acquire charge? |
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Answer» Two objects rubbed against each other acquire charge. a. What is the relationship between the charges acquired by the two objects? b. What action does rubbing cause, because of which the objects acquire charge? |
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| 4809. |
Which of the following is equivalent to 1 pascal? |
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Answer» Which of the following is equivalent to 1 pascal? |
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| 4810. |
If a bar magnet is moved to and fro near a copper coil then _____________. |
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Answer» If a bar magnet is moved to and fro near a copper coil then _____________. |
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| 4811. |
Calculate the amount of KCl which must be added in 100 g of water so that freezing point is depressed by 2 K |
| Answer» Calculate the amount of KCl which must be added in 100 g of water so that freezing point is depressed by 2 K | |
| 4812. |
in the figure shown, m slides on inclined surface of wedge M.if velocity of wedge at any ins†an t be v,find velocity of m with respect to ground. |
| Answer» in the figure shown, m slides on inclined surface of wedge M.if velocity of wedge at any ins†an t be v,find velocity of m with respect to ground. | |
| 4813. |
Evaporation occurs at all temperatures. Then why do we hang our clothes to dry in the sun? |
| Answer» Evaporation occurs at all temperatures. Then why do we hang our clothes to dry in the sun? | |
| 4814. |
State three factors on which loudness of sound heard by a listener depends. |
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Answer» State three factors on which loudness of sound heard by a listener depends. |
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| 4815. |
Two identical cubes A and B are placed in a tank containing a liquid as shown below. Choose the correct statement regarding pressures exerted on them. |
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Answer» Two identical cubes A and B are placed in a tank containing a liquid as shown below. Choose the correct statement regarding pressures exerted on them. |
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| 4816. |
12x^-5x-2=0;x=2/3,x=1/4 |
| Answer» 12x^-5x-2=0;x=2/3,x=1/4 | |
| 4817. |
if there is sunlight in space why there is darkn |
| Answer» if there is sunlight in space why there is darkn | |
| 4818. |
What is the main component present in the matchbox strip? |
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Answer» What is the main component present in the matchbox strip? |
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| 4819. |
Question 3What do you mean by electrical conductivity? Name some metals that are poor conductors of electricity. |
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Answer» Question 3 What do you mean by electrical conductivity? Name some metals that are poor conductors of electricity. |
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| 4820. |
An electric dipole of dipole moment 60 x 10-6 Cm is enclosed by a closed surface. The net electricflux through the surface is |
| Answer» An electric dipole of dipole moment 60 x 10-6 Cm is enclosed by a closed surface. The net electricflux through the surface is | |
| 4821. |
Question 11 (ii) State whether the following statements are True/False. The plates of the outermost layer of the earth are always in continuous motion. |
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Answer» Question 11 (ii) State whether the following statements are True/False. |
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| 4822. |
Thousands cells of same emf E and same internal resistance r are connected in series in same order without an external resistance the potential drop across 399 cells is found to be |
| Answer» Thousands cells of same emf E and same internal resistance r are connected in series in same order without an external resistance the potential drop across 399 cells is found to be | |
| 4823. |
A block of mass M is pulled along a horizontal surface by applying a force at an angle θ with horizontal. Coefficient of friction between block and surface is μ. If the block travels with uniform velocity, find the work done by this applied force during a displacement d of the block. |
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Answer» A block of mass M is pulled along a horizontal surface by applying a force at an angle θ with horizontal. Coefficient of friction between block and surface is μ. If the block travels with uniform velocity, find the work done by this applied force during a displacement d of the block. |
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| 4824. |
If the radius of cross-section of the conductor is increased by 0.1% keeping volume constant then percentage change in the resistance of the conductor is- |
| Answer» If the radius of cross-section of the conductor is increased by 0.1% keeping volume constant then percentage change in the resistance of the conductor is- | |
| 4825. |
Which forces are acting on a body when it is immersed in fluid? |
| Answer» Which forces are acting on a body when it is immersed in fluid? | |
| 4826. |
State two precautions to be observed while measuring length with the help of a metre scale. |
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Answer» State two precautions to be observed while measuring length with the help of a metre scale. |
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| 4827. |
Which type of surfaces produce regular reflection? |
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Answer» Which type of surfaces produce regular reflection? |
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| 4828. |
A company that made scientific instruments designed a magnetic compass shown here, and sold it in the market. However, customers complained that the compass did not show that direction correctly.The company tested the compasses and found that the needle did not point in any one direction. On further testing, it was properly magnetized and freely pivoted. They could not understand what was wrong. Can you? |
Answer» A company that made scientific instruments designed a magnetic compass shown here, and sold it in the market. However, customers complained that the compass did not show that direction correctly. The company tested the compasses and found that the needle did not point in any one direction. On further testing, it was properly magnetized and freely pivoted. They could not understand what was wrong. Can you? |
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| 4829. |
If we increase the speed of an object, kinetic energy will : |
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Answer» If we increase the speed of an object, kinetic energy will : |
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| 4830. |
What will be the effect of using a thicker wire? |
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Answer» What will be the effect of using a thicker wire? |
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| 4831. |
An example of stringed instrument is: |
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Answer» An example of stringed instrument is: |
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| 4832. |
The speed of sound in air at 0∘C is: |
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Answer» The speed of sound in air at 0∘C is: |
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| 4833. |
Question 16Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes? |
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Answer» Question 16 Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes? |
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| 4834. |
Give reason - The rear wheels of a tractor are broad . |
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Answer» Give reason - The rear wheels of a tractor are broad . |
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| 4835. |
Why does a piece of ice float on water? |
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Answer» Why does a piece of ice float on water? |
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| 4836. |
The range of clinical thermometers is: |
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Answer» The range of clinical thermometers is: |
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| 4837. |
In LEDs, the longer lead is always connected to _______ terminal |
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Answer» In LEDs, the longer lead is always connected to _______ terminal |
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| 4838. |
The distance between the object and its image in a plane mirror is 10m. If the object is brought 2m closer to the mirror then the image distance from the mirror will be |
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Answer» The distance between the object and its image in a plane mirror is 10m. If the object is brought 2m closer to the mirror then the image distance from the mirror will be |
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| 4839. |
A slab of mass m, m 1 =30 kg is kept over a smooth horizontal surface above which a block of mass m 2 =10 kg has been kept as shown. The coefficient of friction u between the block and the slab is 0.5. A horizontal force F acts on the block. The value of F for which both the masses will move together is (g = 10 m/s ^ 2) |
| Answer» A slab of mass m, m 1 =30 kg is kept over a smooth horizontal surface above which a block of mass m 2 =10 kg has been kept as shown. The coefficient of friction u between the block and the slab is 0.5. A horizontal force F acts on the block. The value of F for which both the masses will move together is (g = 10 m/s ^ 2) | |
| 4840. |
What is oblique incidence? |
| Answer» What is oblique incidence? | |
| 4841. |
Question 14The aluminium strips in an electroscope as shown in the figure are replaced by plastic strips and a charged body is brought in contact with the metal clip. what will happen? |
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Answer» Question 14 The aluminium strips in an electroscope as shown in the figure are replaced by plastic strips and a charged body is brought in contact with the metal clip. what will happen?
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| 4842. |
Which are the two planets which rotate from east to west? |
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Answer» Which are the two planets which rotate from east to west? |
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| 4843. |
Power is the rate of doing work. If the potential difference is V and current is I, the electrical power P can be calculated as . |
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Answer» Power is the rate of doing work. If the potential difference is V and current is I, the electrical power P can be calculated as |
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| 4844. |
Identify the elements in the diagram |
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Answer» Identify the elements in the diagram |
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| 4845. |
Why conductors allow electric current to pass through them and insulators don't? |
| Answer» Why conductors allow electric current to pass through them and insulators don't? | |
| 4846. |
the resul†an t of ' a 'vector and 'b 'vector is prependicular to' a' vector what is the angle between 'a 'vector and ' b 'vector |
| Answer» the resul†an t of ' a 'vector and 'b 'vector is prependicular to' a' vector what is the angle between 'a 'vector and ' b 'vector | |
| 4847. |
the radius of cross-section of the conductor is increased by 0.1% keeping volume constant, then percentage change in the resistance of the conductor is |
| Answer» the radius of cross-section of the conductor is increased by 0.1% keeping volume constant, then percentage change in the resistance of the conductor is | |
| 4848. |
The height of the point vertically above the earth’s surface, at which acceleration due to gravity becomes 1% of its value at the surface is (Radius of the earth = R) |
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Answer» The height of the point vertically above the earth’s surface, at which acceleration due to gravity becomes 1% of its value at the surface is (Radius of the earth = R) |
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| 4849. |
why at boiling piont vapour pressure is equal to atmospheric pressure ? |
| Answer» why at boiling piont vapour pressure is equal to atmospheric pressure ? | |
| 4850. |
the correct order of stabolity of Al+,Al+2,Al+3 1.Al+3>Al+2>Al+ 2.Al+2>Al+3>Al+ 3.Al+2Al+3 4.Al+3>Al+>Al+2 |
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Answer» the correct order of stabolity of Al+,Al+2,Al+3 1.Al+3>Al+2>Al+ 2.Al+2>Al+3>Al+ 3.Al+2 |
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