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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.
| 1551. |
Displacement of a particle executing SHM is represented by Y = 0.08 sin (3*pi* t + pi/4) metre. Then calculate-Displacement from mean position at t = 7/36 sec (1) 0.04 metre (2) 0.09 metre (2) 0.07 metre (4) 0.01 metre |
| Answer» Displacement of a particle executing SHM is represented by Y = 0.08 sin (3*pi* t + pi/4) metre. Then calculate-Displacement from mean position at t = 7/36 sec (1) 0.04 metre (2) 0.09 metre (2) 0.07 metre (4) 0.01 metre | |
| 1552. |
Why is a lightning conductor pointed? |
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Answer» Why is a lightning conductor pointed? |
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| 1553. |
Two vector A=2i+3j-4k and B=4i+8j+xk are such that component of vector B along vector A is zero. Then the value of x I'll be what. |
| Answer» Two vector A=2i+3j-4k and B=4i+8j+xk are such that component of vector B along vector A is zero. Then the value of x I'll be what. | |
| 1554. |
A solid sphere and a hollow sphere of the same material and size are heated to the same temperature and allowed to cool in the same surroundings. If the temperature difference between the surrounding and each sphere is T, then |
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Answer» A solid sphere and a hollow sphere of the same material and size are heated to the same temperature and allowed to cool in the same surroundings. If the temperature difference between the surrounding and each sphere is T, then |
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| 1555. |
A beam of light of wavelength 600 nm from a distant source falls on a single slit 1.0 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between the first dark fringes on either side of the central bright fringe is |
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Answer» A beam of light of wavelength 600 nm from a distant source falls on a single slit 1.0 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between the first dark fringes on either side of the central bright fringe is |
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| 1556. |
Which of the following have the least density? |
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Answer» Which of the following have the least density? |
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| 1557. |
What is secondary rainbow? |
| Answer» What is secondary rainbow? | |
| 1558. |
14.If a preson moves 30m north , then 20 m east and then 30root2 m south west then what is its displacement? |
| Answer» 14.If a preson moves 30m north , then 20 m east and then 30root2 m south west then what is its displacement? | |
| 1559. |
A triangle with an area of 150 cm2 has a base length of 50 cm. What is its height? |
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Answer» A triangle with an area of 150 cm2 has a base length of 50 cm. What is its height? |
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| 1560. |
If currenr sensitivity is increased by 40% and resistance is decreased by 30% then voltage sensitivity |
| Answer» If currenr sensitivity is increased by 40% and resistance is decreased by 30% then voltage sensitivity | |
| 1561. |
what is difference between resistance and resistor |
| Answer» what is difference between resistance and resistor | |
| 1562. |
State four important properties of a bar magnet. |
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Answer» State four important properties of a bar magnet. |
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| 1563. |
How does heat travel in the air? |
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Answer» How does heat travel in the air? |
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| 1564. |
The iron pipes used in homes to carry water are coated with: |
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Answer» The iron pipes used in homes to carry water are coated with: |
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| 1565. |
Expanaion on heating can be a nuisance .explain giving two examples |
| Answer» Expanaion on heating can be a nuisance .explain giving two examples | |
| 1566. |
Along which of the given dotted lines, where should the mirror be placed so that we get the shape shown here? |
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Answer» Along which of the given dotted lines, where should the mirror be placed so that we get the shape shown here?  |
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| 1567. |
a particle of mass m is situated at center of spherical shell of same mass and radius a gravitational potential at a point which is at center 3a/2 distance from center of shell will be |
| Answer» a particle of mass m is situated at center of spherical shell of same mass and radius a gravitational potential at a point which is at center 3a/2 distance from center of shell will be | |
| 1568. |
Why only our tongue sticks on a cold pole |
| Answer» Why only our tongue sticks on a cold pole | |
| 1569. |
two metal spheres, one of radius R and the other of radius 2R respectively have the same surface charge density . they are brought in contact and seprated. what will be the new surface charge densities on them ? |
| Answer» two metal spheres, one of radius R and the other of radius 2R respectively have the same surface charge density . they are brought in contact and seprated. what will be the new surface charge densities on them ? | |
| 1570. |
A body covers one fourth of the distance with speed v, the next one fourth of distance with speed 3v4 and the remaining distance with speed 3v2. The average speed isएक पिण्ड प्रथम एक चौथाई दूरी v चाल से, अगली एक चौथाई दूरी 3v4 चाल से तथा शेष दूरी 3v2 चाल से तय करता है। औसत चाल है |
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Answer» A body covers one fourth of the distance with speed v, the next one fourth of distance with speed 3v4 and the remaining distance with speed 3v2. The average speed is |
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| 1571. |
Telephone wires are kept slightly loose when they are laid. Why? |
| Answer» Telephone wires are kept slightly loose when they are laid. Why? | |
| 1572. |
If the speed of an object moving along a straight line keeps changing, its motion is said to be |
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Answer» If the speed of an object moving along a straight line keeps changing, its motion is said to be |
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| 1573. |
21. The electric field of a plane electromagnetic wave is- ot) \lbrack i +i\rbrack. Which of the given by E=E0sin(kz-wt) following gives the direction of the associated magnetic field?(1)k (2) -i+j(3) -i- j(4)i-j |
| Answer» 21. The electric field of a plane electromagnetic wave is- ot) \lbrack i +i\rbrack. Which of the given by E=E0sin(kz-wt) following gives the direction of the associated magnetic field?(1)k (2) -i+j(3) -i- j(4)i-j | |
| 1574. |
Question 13Can any object have mechanical energy even if its momentum is zero? Explain. |
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Answer» Question 13 Can any object have mechanical energy even if its momentum is zero? Explain. |
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| 1575. |
Water stored in a dam has ___ and flowing water has ______ respectively. |
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Answer» Water stored in a dam has ___ and flowing water has ______ respectively. |
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| 1576. |
what is the formula of volume of the cylinder |
| Answer» what is the formula of volume of the cylinder | |
| 1577. |
The refractive indices of the material of a lens for violet, yellow and red colours of light are 1.66,1.64 and 1.62resp. The mean focal length of the lens is 10cm. The chromatic aberration of the lens between the violet and red color is |
| Answer» The refractive indices of the material of a lens for violet, yellow and red colours of light are 1.66,1.64 and 1.62resp. The mean focal length of the lens is 10cm. The chromatic aberration of the lens between the violet and red color is | |
| 1578. |
Question 11. Gurmit wanted to perform an activity using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher's advice? |
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Answer» Question 11. Gurmit wanted to perform an activity using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher's advice? |
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| 1579. |
What is a scalar quantity? |
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Answer» What is a scalar quantity? |
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| 1580. |
why time of ascent is always less than descent in presence of air resis†an ce |
| Answer» why time of ascent is always less than descent in presence of air resis†an ce | |
| 1581. |
A large square container with thin transparent vertical walls and filled with water (refractiveindex 43) is kept on a horizontal table. A student holds a thin straight wire vertically inside thewater 12 cm from one of its corners, as shown schematically in the figure. Looking at the wire from this corner, another student sees two images of the wire, located symmetrically on each side of the line of sight as shown. The separation (in cm) between these images is |
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Answer» A large square container with thin transparent vertical walls and filled with water (refractive index 43) is kept on a horizontal table. A student holds a thin straight wire vertically inside the water 12 cm from one of its corners, as shown schematically in the figure. Looking at the wire from this corner, another student sees two images of the wire, located symmetrically on each side of the line of sight as shown. The separation (in cm) between these images is  |
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| 1582. |
116. Why the light rays doesn't refract on the boundary of lens even the light rays change their media from air to glass? |
| Answer» 116. Why the light rays doesn't refract on the boundary of lens even the light rays change their media from air to glass? | |
| 1583. |
In a weird sequence of amnesiac time-travel events, you are transported to 16th century Germany where the only practical fuel (or energy source) is firewood. Suppose you are given a piece of Copper which contains silver in small quantities. As luck would have it, you have a good quantity of Lead at your disposal. In this scenario, which one of the following metallurgical methods would you choose to refine the impure copper? |
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Answer» In a weird sequence of amnesiac time-travel events, you are transported to 16th century Germany where the only practical fuel (or energy source) is firewood. Suppose you are given a piece of Copper which contains silver in small quantities. As luck would have it, you have a good quantity of Lead at your disposal. In this scenario, which one of the following metallurgical methods would you choose to refine the impure copper? |
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| 1584. |
Does a body moving with constant velocity experience kinetic friction? |
| Answer» Does a body moving with constant velocity experience kinetic friction? | |
| 1585. |
93.A particle moves 3m north then 4m east and then 12 m vertically upwards , its displacement is? |
| Answer» 93.A particle moves 3m north then 4m east and then 12 m vertically upwards , its displacement is? | |
| 1586. |
The scale of an ammeter is shown below:The least count of this ammeter is :(1) 0.1 A(2) 0.01 A(3) 0.02 A(4) 0.2 A |
Answer» The scale of an ammeter is shown below: The least count of this ammeter is : (1) 0.1 A (2) 0.01 A (3) 0.02 A (4) 0.2 A |
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| 1587. |
What is kinetic and static friction |
| Answer» What is kinetic and static friction | |
| 1588. |
What is the capacity (in Litres) of a cuboidal container having dimensions 2 m×8 m×3 m? |
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Answer» What is the capacity (in Litres) of a cuboidal container having dimensions 2 m×8 m×3 m? |
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| 1589. |
Give three examples of Uniform Circular Motion. |
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Answer» Give three examples of Uniform Circular Motion. |
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| 1590. |
On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius with the bottom of the vessel. If r << R and the surface tension of water is T, the value of r just before bubbles detach is (density of water is ρw). |
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Answer» On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius with the bottom of the vessel. If r << R and the surface tension of water is T, the value of r just before bubbles detach is (density of water is ρw). |
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| 1591. |
What are sea breeze and land breeze? |
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Answer» What are sea breeze and land breeze? |
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| 1592. |
How can we increase the magnetic field of an electromagnet? Explain each method. |
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Answer» How can we increase the magnetic field of an electromagnet? Explain each method. |
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| 1593. |
Name one natural phenomenon that occurs due to convection currents in air. |
| Answer» Name one natural phenomenon that occurs due to convection currents in air. | |
| 1594. |
A Body takes time t to slide down a smooth inclined plane of inclination θ. if the plane is made rough the time taken is 2t .The coefficient of friction of the rough pla |
| Answer» A Body takes time t to slide down a smooth inclined plane of inclination θ. if the plane is made rough the time taken is 2t .The coefficient of friction of the rough pla | |
| 1595. |
Whenever there is an excessive flow of current in a household circuit: |
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Answer» Whenever there is an excessive flow of current in a household circuit: |
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| 1596. |
If temperature of the surrounding is equal to the temperature of a body, then |
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Answer» If temperature of the surrounding is equal to the temperature of a body, then |
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| 1597. |
16.A sphere of radius r specific heat s is rotated about an axis passing through its centre at a speed of n rotations per second. It is suddenly stopped and 50% of its energy is used in increasing its temperature. Then the rise in temperature of the sphere is A. (2/5)π²n²r²/s B. (1/10)π²n²/r²s C. (7/8)πr²n²s D. 5[πrn/145]² |
| Answer» 16.A sphere of radius r specific heat s is rotated about an axis passing through its centre at a speed of n rotations per second. It is suddenly stopped and 50% of its energy is used in increasing its temperature. Then the rise in temperature of the sphere is A. (2/5)π²n²r²/s B. (1/10)π²n²/r²s C. (7/8)πr²n²s D. 5[πrn/145]² | |
| 1598. |
In a dark night, how does a torch enables us to see objects? |
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Answer» In a dark night, how does a torch enables us to see objects? |
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| 1599. |
Which one of the following is a chemical change? |
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Answer» Which one of the following is a chemical change? |
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| 1600. |
20.The value of the equilibrium constant for the reaction H2(g) +I2(g) formed 2HI(g) at 720Kis 48. What is the value of the equilibrium constant when the no. Of moles are half. |
| Answer» 20.The value of the equilibrium constant for the reaction H2(g) +I2(g) formed 2HI(g) at 720Kis 48. What is the value of the equilibrium constant when the no. Of moles are half. | |