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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.
| 451. |
A tunning fork of frequency 100 when sound together with another tuning fork of unknown frequency produces 2 beats per second . On loading the tunning fork whose frequency is not known and sounded together with the same tuning fork produces one beat, then the frequency of the unknown tuning fork is (a) 102 (b) 98 (c) 99 (d) 101 |
| Answer» A tunning fork of frequency 100 when sound together with another tuning fork of unknown frequency produces 2 beats per second . On loading the tunning fork whose frequency is not known and sounded together with the same tuning fork produces one beat, then the frequency of the unknown tuning fork is (a) 102 (b) 98 (c) 99 (d) 101 | |
| 452. |
A man intakes glucose and then moves a block. The block comes to rest after sliding on a rough floor. The correct order of energy transformation is: |
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Answer» A man intakes glucose and then moves a block. The block comes to rest after sliding on a rough floor. The correct order of energy transformation is: |
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| 453. |
What is boiling? Explain it on the basis of the molecular motion. |
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Answer» What is boiling? Explain it on the basis of the molecular motion. |
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| 454. |
How does the image look after half a rotation? |
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Answer» How does the image look after half a rotation? |
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| 455. |
Electric wires that melt quickly and break when large amount of current passes through them are called ______. |
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Answer» Electric wires that melt quickly and break when large amount of current passes through them are called ______. |
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| 456. |
A plastic cube floats in a liquid while remaining fully submerged the same cube floats in water with 3/4 th of its volume submerged. The density of liquid is |
| Answer» A plastic cube floats in a liquid while remaining fully submerged the same cube floats in water with 3/4 th of its volume submerged. The density of liquid is | |
| 457. |
Difference in ionization energy and ionization enthalpy isa) O b) 5/2RTC) 3/2RTd) none |
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Answer» Difference in ionization energy and ionization enthalpy is a) O b) 5/2RT C) 3/2RT d) none |
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| 458. |
What is force of friction? |
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Answer» What is force of friction? |
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| 459. |
Q:- An electrical power station has the power 200 megawatt(MW), then the electrical energy produced per day will be- 1. 200 MW-hour 2. 4800 MW-hour 3. 4800 MW 4. 4800 joul |
| Answer» Q:- An electrical power station has the power 200 megawatt(MW), then the electrical energy produced per day will be- 1. 200 MW-hour 2. 4800 MW-hour 3. 4800 MW 4. 4800 joul | |
| 460. |
The principle of working of an electromagnet is ______________. |
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Answer» The principle of working of an electromagnet is ______________. |
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| 461. |
What is a meteor? What is the other name of a meteor? |
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Answer» What is a meteor? What is the other name of a meteor? |
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| 462. |
A massless inextensible string in the form of a loop is placed on a horizontal film of soap solution of surface tension T. If film is pierced inside the loop and it convert into a circular loop of diameter d, then the tension produced in string is |
| Answer» A massless inextensible string in the form of a loop is placed on a horizontal film of soap solution of surface tension T. If film is pierced inside the loop and it convert into a circular loop of diameter d, then the tension produced in string is | |
| 463. |
A 100 W bulb is designed to operate on a potential difference of 230 V. Find the power consumed by the bulb, if it is connected to 200 V supply. |
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Answer» A 100 W bulb is designed to operate on a potential difference of 230 V. Find the power consumed by the bulb, if it is connected to 200 V supply. |
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| 464. |
How is the sound made by bursting a balloon related to the sound made by thunder? |
| Answer» How is the sound made by bursting a balloon related to the sound made by thunder? | |
| 465. |
Find current density across cuboid shaped conductor when electric current I flows across it's length T |
| Answer» Find current density across cuboid shaped conductor when electric current I flows across it's length T | |
| 466. |
Explain bouyance |
| Answer» Explain bouyance | |
| 467. |
list all types if friction |
| Answer» list all types if friction | |
| 468. |
Which all of the following are true about liquid pressure? |
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Answer» Which all of the following are true about liquid pressure? |
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| 469. |
The circuit shown in the figure consists of a charged capacitor of capacity 3 μF and a charge of 30 μC. At time t=0 when the key is closed, the value of current flowing through the 5 MΩ resistor is x μA . The value of x to the nearest integer is . |
Answer» The circuit shown in the figure consists of a charged capacitor of capacity 3 μF and a charge of 30 μC. At time t=0 when the key is closed, the value of current flowing through the 5 MΩ resistor is x μA . The value of x to the nearest integer is  |
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| 470. |
80 Molecular Weight of NaCl determined by freezing point depression of its 0.5% aqueous solution is 30 . the Apparent degree of dissociation of NaCl is |
| Answer» 80 Molecular Weight of NaCl determined by freezing point depression of its 0.5% aqueous solution is 30 . the Apparent degree of dissociation of NaCl is | |
| 471. |
The smell of hot food reaches us more quickly as compared to smell of cold food. Why? |
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Answer» The smell of hot food reaches us more quickly as compared to smell of cold food. Why? |
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| 472. |
35. Two identical helium filled balloons A and B fastened to a weight of 5 gram by threads float in equilibrium as shown in fig.Calculate the charge on each balloon assuming that they carry equal charges. |
| Answer» 35. Two identical helium filled balloons A and B fastened to a weight of 5 gram by threads float in equilibrium as shown in fig.Calculate the charge on each balloon assuming that they carry equal charges. | |
| 473. |
38. Why does ice cream appear colder than water at the same temperature |
| Answer» 38. Why does ice cream appear colder than water at the same temperature | |
| 474. |
What is the difference between conduction, convection and radiation? |
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Answer» What is the difference between conduction, convection and radiation? |
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| 475. |
A stationary body accelerates at a rate of 1 ms−2 for a distance of 18 m. If the body weighs 45 kg, find the final momentum of the body. |
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Answer» A stationary body accelerates at a rate of 1 ms−2 for a distance of 18 m. If the body weighs 45 kg, find the final momentum of the body. |
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| 476. |
Property of charges. |
| Answer» Property of charges. | |
| 477. |
find n, if {}^nP_6=3.{}^nP_5. |
| Answer» find n, if {}^nP_6=3.{}^nP_5. | |
| 478. |
which force is acting on raindrop ? |
| Answer» which force is acting on raindrop ? | |
| 479. |
The image of an object formed by a plane mirror is: (a) virtual (b) real (c) diminished (d) upside-down |
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Answer» The image of an object formed by a plane mirror is: (a) virtual (b) real (c) diminished (d) upside-down |
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| 480. |
Which one of the following statements is incorrect? A. The crust of the Earth is made of comparatively lighter rocks than that of mantle. B. The crust of the Earth is made of number of plates. C. Continental plates are comparatively thinner than that of oceanic plates. D. Movement of tectonic plates is caused by convection currents taking place in the mantle. E. None of these. |
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Answer» Which one of the following statements is incorrect? A. The crust of the Earth is made of comparatively lighter rocks than that of mantle. B. The crust of the Earth is made of number of plates. C. Continental plates are comparatively thinner than that of oceanic plates. D. Movement of tectonic plates is caused by convection currents taking place in the mantle. E. None of these. |
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| 481. |
List a few disasters that have occurred in our country. |
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Answer» List a few disasters that have occurred in our country. |
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| 482. |
When we prick a balloon it bursts ? |
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Answer» When we prick a balloon it bursts ? |
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| 483. |
Read stanza 3, and then, describe Macavity in two or three sentences of your own. |
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Answer» Read stanza 3, and then, describe Macavity in two or three sentences of your own. |
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| 484. |
20. How to find isoelectric point |
| Answer» 20. How to find isoelectric point | |
| 485. |
ntQ) Two identical helium filled balloons A and B fastened to a weight of 5 g by threads floats in equilibrium as shown figure . Calculate the charge on each balloons assuming that they carry equal charges.n |
| Answer» ntQ) Two identical helium filled balloons A and B fastened to a weight of 5 g by threads floats in equilibrium as shown figure . Calculate the charge on each balloons assuming that they carry equal charges.n | |
| 486. |
Represent the following on two different graphs in each case:Case(i): Two sound waves having the same amplitude but different frequences.Case(ii): Two sound waves having the same frequency but different amplitudes.Case(iii): Two sound waves having different amplitudes and also different wavelengths. |
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Answer» Represent the following on two different graphs in each case: Case(i): Two sound waves having the same amplitude but different frequences. Case(ii): Two sound waves having the same frequency but different amplitudes. Case(iii): Two sound waves having different amplitudes and also different wavelengths. |
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| 487. |
Question 18 Paheli saw the moon through a glass window at 8:00 p.m. She marked the position of the moon on the glass pane. She got up at 4 a.m. in the morning. Will the moon be visible at the same position? |
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Answer» Question 18 |
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| 488. |
68.A potentiometer wire of length 100 cm has a resistance of 10 ohm.It is connected in a series with a resistance and accumulator of EMF 2V and negligible internal resistance .A source of EMF 10 mV is balanced against a length of 40 cm of the potentiometer wire.What is the value of the external resistsnce? Click here to view details: |
| Answer» 68.A potentiometer wire of length 100 cm has a resistance of 10 ohm.It is connected in a series with a resistance and accumulator of EMF 2V and negligible internal resistance .A source of EMF 10 mV is balanced against a length of 40 cm of the potentiometer wire.What is the value of the external resistsnce? Click here to view details: | |
| 489. |
A resistor draws a current of 0.36 A for 15 minutes. Calculate the amount of electric charge that flows through the resistor. |
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Answer» A resistor draws a current of 0.36 A for 15 minutes. Calculate the amount of electric charge that flows through the resistor. |
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| 490. |
What are radio telescopes? Explain the working of radio telescopes. |
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Answer» What are radio telescopes? Explain the working of radio telescopes. |
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| 491. |
what is field of view |
| Answer» what is field of view | |
| 492. |
We all have seen 3D movies. Have you ever imagined how we can we explain dimensions of a 3D object. |
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Answer» We all have seen 3D movies. Have you ever imagined how we can we explain dimensions of a 3D object. |
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| 493. |
The velocity of a projectile at the initial point A is (2^i+3^j) m/s. Its velocity (in m/s) at point B is |
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Answer» The velocity of a projectile at the initial point A is (2^i+3^j) m/s. Its velocity (in m/s) at point B is |
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| 494. |
69. A concave mirror if focal length 100cm is used to obtain the image of sun which subtends an angle 30'. The diameter of the image of sun. A. 1.74. B. 0.87 C. 0.435 D. 100 |
| Answer» 69. A concave mirror if focal length 100cm is used to obtain the image of sun which subtends an angle 30'. The diameter of the image of sun. A. 1.74. B. 0.87 C. 0.435 D. 100 | |
| 495. |
Question 15A truck of mass Mis moved under a force F. If the truck is then loaded with an object equal to the mass of the truck and the driving force is halved then how does the acceleration change? |
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Answer» Question 15 A truck of mass Mis moved under a force F. If the truck is then loaded with an object equal to the mass of the truck and the driving force is halved then how does the acceleration change? |
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| 496. |
Rakesh wanted to do the prism experiment, he took a prism and passed a monochromatic light through the prism. Which of the following phenomenon would be observed? |
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Answer» Rakesh wanted to do the prism experiment, he took a prism and passed a monochromatic light through the prism. Which of the following phenomenon would be observed? |
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| 497. |
State the reason behind the gradual wearing out of tyres in a vehicle. Explain. |
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Answer» State the reason behind the gradual wearing out of tyres in a vehicle. Explain. |
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| 498. |
it takes one minute for a passenger s†an ding on an escalator to reach the top.if the escalator does not move it takes him 3 min. to swalk up .How long will it take for the passenger to arrive at the top if he walks up the moving escalator? |
| Answer» it takes one minute for a passenger s†an ding on an escalator to reach the top.if the escalator does not move it takes him 3 min. to swalk up .How long will it take for the passenger to arrive at the top if he walks up the moving escalator? | |
| 499. |
Show that if charge q is placed in between two charges Q then the system will be in equilibrium when q=Q/4[2] |
| Answer» Show that if charge q is placed in between two charges Q then the system will be in equilibrium when q=Q/4[2] | |
| 500. |
If F Fy Fw and Fe be the gravitational, nuclear,weak and electromagnetic forces respectively, thenarrange them in proper order as per their strength. |
| Answer» If F Fy Fw and Fe be the gravitational, nuclear,weak and electromagnetic forces respectively, thenarrange them in proper order as per their strength. | |
