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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.
| 3501. |
35.The sinusoidal potential difference V1 shown in finger applied across a resistor R produces heat at a rate W. What is the rate of heat dissipated when the aquare wave potential difference V2as shown in figure is applied across the resistor? Pic attachment 1. W/2 2.W 3.root2W 4.2W |
| Answer» 35.The sinusoidal potential difference V1 shown in finger applied across a resistor R produces heat at a rate W. What is the rate of heat dissipated when the aquare wave potential difference V2as shown in figure is applied across the resistor? Pic attachment 1. W/2 2.W 3.root2W 4.2W | |
| 3502. |
State what happens when you switch off and switch on a circuit? |
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Answer» State what happens when you switch off and switch on a circuit? |
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| 3503. |
The distance between a compression and its next rarefaction, in a sound wave of wavelength λ, will be: |
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Answer» The distance between a compression and its next rarefaction, in a sound wave of wavelength λ, will be: |
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| 3504. |
What is the SI unit of Stefan’s constant? |
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Answer» What is the SI unit of Stefan’s constant? |
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| 3505. |
Out of plane mirror, convex mirror and concave mirror:(a) Which mirror is used as a reflector in the headlights of a car?(b) Which mirror is used as a rear-view mirror in a car? |
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Answer» Out of plane mirror, convex mirror and concave mirror: (a) Which mirror is used as a reflector in the headlights of a car? (b) Which mirror is used as a rear-view mirror in a car? |
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| 3506. |
Why we can see a red coloured light when we close the mouth of the torchlight with our hand? |
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Answer» Why we can see a red coloured light when we close the mouth of the torchlight with our hand? |
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| 3507. |
if a biker covers 1/4th of the distance with speed 54 kmph and 3/4th with 72kmph .then what is his average speed? |
| Answer» if a biker covers 1/4th of the distance with speed 54 kmph and 3/4th with 72kmph .then what is his average speed? | |
| 3508. |
The speed of sound in air is 344 m/s. In order to hear distinct echoes in air, the distance of the obstacle from the source of sound should be: |
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Answer» The speed of sound in air is 344 m/s. In order to hear distinct echoes in air, the distance of the obstacle from the source of sound should be: |
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| 3509. |
What are asbestos ? From where do the originate ? what are they used for ? |
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Answer» What are asbestos ? From where do the originate ? what are they used for ? |
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| 3510. |
How does a digital thermometer works? |
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Answer» How does a digital thermometer works? |
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| 3511. |
What makes it possible to see the path of light in the darkness of a cinema hall? |
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Answer» What makes it possible to see the path of light in the darkness of a cinema hall? |
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| 3512. |
How can we make an electromagnet from donut magnets |
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Answer» How can we make an electromagnet from donut magnets |
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| 3513. |
A freely suspended magnet always aligns in: |
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Answer» A freely suspended magnet always aligns in: |
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| 3514. |
The acid used in lead storage batteries is (a)nitric acid (b)carbonic acid (c)sulpheric acid (d)hydrochloric acid |
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Answer» The acid used in lead storage batteries is (a)nitric acid (b)carbonic acid (c)sulpheric acid (d)hydrochloric acid |
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| 3515. |
A boat can travel 10km/hr in still water. But upstream it tates 5 times of that time to cover the same distance. What time will the boat take to cover 180 km downstream ? |
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Answer» A boat can travel 10km/hr in still water. But upstream it tates 5 times of that time to cover the same distance. What time will the boat take to cover 180 km downstream ? |
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| 3516. |
51. A sample pendulum with bob of mass m amd length x is held in position at an angle alpha1 and then angle alpha2 with the verticle . When relesed from these position with which it passes the lowest position are v1 and v2 respectively. Then v1/v2is? |
| Answer» 51. A sample pendulum with bob of mass m amd length x is held in position at an angle alpha1 and then angle alpha2 with the verticle . When relesed from these position with which it passes the lowest position are v1 and v2 respectively. Then v1/v2is? | |
| 3517. |
What is principle of calorimetry ? |
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Answer» What is principle of calorimetry ? |
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| 3518. |
what is a shadow? sometimes if we observe while walking when we go front our shadow move back why? and what are the types of shadows? |
| Answer» what is a shadow? sometimes if we observe while walking when we go front our shadow move back why? and what are the types of shadows? | |
| 3519. |
A body starts accelerating from rest under gravity. What is the displacement of the body in 10-15 sec time interval?(Assume g=10 ms−2)? |
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Answer» A body starts accelerating from rest under gravity. What is the displacement of the body in 10-15 sec time interval?(Assume g=10 ms−2)? |
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| 3520. |
A: During collision between 2 objects, the momentum of colliding objects is conserved only in diection perpendicular to lineof impact R:The force on colliding objects in direction perpendicular to line of impact is zero n nt n nt(i) both assertion and reason is correct and also the correct explanation. (ii)both assertion and reason is correct but not the correct explanation. (iii) assertion is correct but reason is false (iv) both assertion and reason are correct. explain with diagram |
| Answer» A: During collision between 2 objects, the momentum of colliding objects is conserved only in diection perpendicular to lineof impact R:The force on colliding objects in direction perpendicular to line of impact is zero n nt n nt(i) both assertion and reason is correct and also the correct explanation. (ii)both assertion and reason is correct but not the correct explanation. (iii) assertion is correct but reason is false (iv) both assertion and reason are correct. explain with diagram | |
| 3521. |
Calculate the kinetic energy of 1mol of 1g O2 at 47oC. |
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Answer» Calculate the kinetic energy of 1mol of 1g O2 at 47oC. |
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| 3522. |
How does heat transfer take place in vacuum? Give one example where heat is transferred in vacuum. |
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Answer» How does heat transfer take place in vacuum? Give one example where heat is transferred in vacuum. |
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| 3523. |
A plane mirror lies face up making an angle of 15degree with horizontal . a ray shines down vertically on the mirror.what is the angle of incidence? What will the angle between the reflected ray and the horizontal line? |
| Answer» A plane mirror lies face up making an angle of 15degree with horizontal . a ray shines down vertically on the mirror.what is the angle of incidence? What will the angle between the reflected ray and the horizontal line? | |
| 3524. |
Differenciate between random motion and oscillatory motion. |
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Answer» Differenciate between random motion and oscillatory motion. |
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| 3525. |
Lcr circuit can be used in what systems. |
| Answer» Lcr circuit can be used in what systems. | |
| 3526. |
Two magnetic lines of force don't intersect each other. Explain why? [2 MARKS] |
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Answer» Two magnetic lines of force don't intersect each other. Explain why? [2 MARKS] |
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| 3527. |
Boiling is a/an ___ phenomenon. |
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Answer» Boiling is a/an |
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| 3528. |
Assertion(A): The process of deplating is done in-order to recover gold and other valuable metals from the circuits of computers and mobiles.Reason(R): Deplating is exactly same as the process of electroplating. |
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Answer» Assertion(A): The process of deplating is done in-order to recover gold and other valuable metals from the circuits of computers and mobiles. |
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| 3529. |
Time-velocity graph of a particle is shown in Fig.(i) Calculate the distance travelled in first 8 seconds. |
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Answer» Time-velocity graph of a particle is shown in Fig.
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| 3530. |
If mercury is replaced with water in barometer, what would be the height of water column at standard atmospheric pressure, i.e., 76 cm of mercury? (Specific gravity of mercury =13.6) |
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Answer» If mercury is replaced with water in barometer, what would be the height of water column at standard atmospheric pressure, i.e., 76 cm of mercury? (Specific gravity of mercury =13.6) |
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| 3531. |
The odometer of a vehicle has an initial reading of 22256 km. After the trip, it shows a reading of 22356 km. If the time taken for the trip is 5 hours, what is the average speed of the vehicle? |
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Answer» The odometer of a vehicle has an initial reading of 22256 km. After the trip, it shows a reading of 22356 km. If the time taken for the trip is 5 hours, what is the average speed of the vehicle? |
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| 3532. |
A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break |
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Answer» A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break |
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| 3533. |
Plastic articles are available in all possible shapes and sizes. Can you tell why? |
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Answer» Plastic articles are available in all possible shapes and sizes. Can you tell why? |
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| 3534. |
A particle moves along the sides AB, BC, and CD of a square of side 25 m with a speed of 15. Its average velocity is________. |
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Answer» A particle moves along the sides AB, BC, and CD of a square of side 25 m with a speed of 15. Its average velocity is________.
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| 3535. |
When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary choose the correct options? |
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Answer» When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary choose the correct options? |
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| 3536. |
Two diagonally opposite corners of a square made ofa four thin rods of same material, same dimensionsare at temperature 40^° C and 10^° C. If only heat conduction takes place, then the temperature difference between other two corners will be(1) 10^° C(2) 15^° C(3) 25^° C (4)0^0 |
| Answer» Two diagonally opposite corners of a square made ofa four thin rods of same material, same dimensionsare at temperature 40^° C and 10^° C. If only heat conduction takes place, then the temperature difference between other two corners will be(1) 10^° C(2) 15^° C(3) 25^° C (4)0^0 | |
| 3537. |
A body travel 200cm in the first 2s and 220cm in 5s. Calculate the velocity at the end of the seventh second from start |
| Answer» A body travel 200cm in the first 2s and 220cm in 5s. Calculate the velocity at the end of the seventh second from start | |
| 3538. |
The graph shown below shows |
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Answer» The graph shown below shows
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| 3539. |
A road is 8 m wide. Its radius of curvature is 40 m.The outer edge is above the lower edge by adistance of 1.2 m. This road is most suited for a velocity of |
| Answer» A road is 8 m wide. Its radius of curvature is 40 m.The outer edge is above the lower edge by adistance of 1.2 m. This road is most suited for a velocity of | |
| 3540. |
An ox tied to a pole situated at one of the corners of a field, with 10 m long rope. The ox moves keeping the rope tight. Find the area of the ground swept by the rope. |
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Answer» An ox tied to a pole situated at one of the corners of a field, with 10 m long rope. The ox moves keeping the rope tight. Find the area of the ground swept by the rope. |
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| 3541. |
There is a square plot of side 12 m. A farmer wants to grow grass on half of his field and plough the remaining land. Find the area of the land used for growing grass. |
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Answer» There is a square plot of side 12 m. A farmer wants to grow grass on half of his field and plough the remaining land. Find the area of the land used for growing grass. |
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| 3542. |
Give two examples of circular periodic motion. |
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Answer» Give two examples of circular periodic motion. |
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| 3543. |
A boy is standing in front of a straight plane mirror 3vfeet away. A pole is standing behind him 3 feet away. The height of the boy is 3 feet and that of the pole is 9 feet. What is the minimum length of the mirror required so that the boy can completely see the pole image in the mirror |
| Answer» A boy is standing in front of a straight plane mirror 3vfeet away. A pole is standing behind him 3 feet away. The height of the boy is 3 feet and that of the pole is 9 feet. What is the minimum length of the mirror required so that the boy can completely see the pole image in the mirror | |
| 3544. |
When we are on a moving train, we see that our surrounding is moving. So who is at rest and who is in motion? |
| Answer» When we are on a moving train, we see that our surrounding is moving. So who is at rest and who is in motion? | |
| 3545. |
State which expands more, when heated to the same temperature : solid, liquid or gas ? |
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Answer» State which expands more, when heated to the same temperature : solid, liquid or gas ? |
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| 3546. |
In an electric circuit, the current flows from the _________. |
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Answer» In an electric circuit, the current flows from the _________. |
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| 3547. |
A square loop of side 10cm and R=0.70 ohm is placed vertically in the east-west plane.A uniform magnetic field of 0.10T is set up across the plane in the north-east direction.The magnetic field is decreased to zero in 0.70s at a steady rate.Determine the magnitudes of induced emf and current during this time interval. Actually my main doubt is that, I know that the value of theta between B and A will be 45° but I don't know that how the value came to be 45° here. |
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Answer» A square loop of side 10cm and R=0.70 ohm is placed vertically in the east-west plane.A uniform magnetic field of 0.10T is set up across the plane in the north-east direction.The magnetic field is decreased to zero in 0.70s at a steady rate.Determine the magnitudes of induced emf and current during this time interval. Actually my main doubt is that, I know that the value of theta between B and A will be 45° but I don't know that how the value came to be 45° here. |
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| 3548. |
Light waves travel |
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Answer» Light waves travel |
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| 3549. |
Why is a lightning conductor made of copper? |
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Answer» Why is a lightning conductor made of copper? |
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| 3550. |
41.A father racing with his son, has one third kinetic energy of the son, who has one-third mass of the father. The father speeds up by 2m/s and then has same kinetic energy as that of the son. The initial speeds of the father and the son are (1) (_/3+1),3(_/3+1) (2) (_/2+1),3(_/2+1) (3) [1/(_/3+1)],[3/(_/3+1)] (4) [1/(_/2+1)],[3/(_/2+1)] |
| Answer» 41.A father racing with his son, has one third kinetic energy of the son, who has one-third mass of the father. The father speeds up by 2m/s and then has same kinetic energy as that of the son. The initial speeds of the father and the son are (1) (_/3+1),3(_/3+1) (2) (_/2+1),3(_/2+1) (3) [1/(_/3+1)],[3/(_/3+1)] (4) [1/(_/2+1)],[3/(_/2+1)] | |
