InterviewSolution
Saved Bookmarks
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.
| 251. |
Deduce the expression f=R/2 for convex mirror. |
| Answer» Deduce the expression f=R/2 for convex mirror. | |
| 252. |
What happens to the spectrum of white light when we place an inverted prism in front of the original prism? |
| Answer» What happens to the spectrum of white light when we place an inverted prism in front of the original prism? | |
| 253. |
88.A car travels with a speed of 30km/h and then returns back with a speed of 5 km/h. Find the average speed of the car. |
| Answer» 88.A car travels with a speed of 30km/h and then returns back with a speed of 5 km/h. Find the average speed of the car. | |
| 254. |
12.976g of lead combines with 2.004g of oxygen to form Pro. People can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo is 13.38%.with the help of given information illustrate the laws of constant composition. |
| Answer» 12.976g of lead combines with 2.004g of oxygen to form Pro. People can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo is 13.38%.with the help of given information illustrate the laws of constant composition. | |
| 255. |
Two metallic spheres S1 and S2 are made of the same material and have got identical surface finish. The mass of S1 is thrice that of S2. Both the spheres are heated to the same high temperature and placed in the same room having lower temperature but are thermally insulated from each other. The ratio of the initial rate of cooling of S1 to that of S2 is, |
|
Answer» Two metallic spheres S1 and S2 are made of the same material and have got identical surface finish. The mass of S1 is thrice that of S2. Both the spheres are heated to the same high temperature and placed in the same room having lower temperature but are thermally insulated from each other. The ratio of the initial rate of cooling of S1 to that of S2 is, |
|
| 256. |
a point charge +10 c is at distance 5 cm directly above the center of square of side 10cm what is the magnitude of electric flux plaese explain step by step |
| Answer» a point charge +10 c is at distance 5 cm directly above the center of square of side 10cm what is the magnitude of electric flux plaese explain step by step | |
| 257. |
Area of a circle of radius r is |
|
Answer» Area of a circle of radius r is |
|
| 258. |
If force (F) and velocity (v) are fundamental quantities, then the dimension of power |
| Answer» If force (F) and velocity (v) are fundamental quantities, then the dimension of power | |
| 259. |
How long a train will take to travel a distance of 200 km with a speed of 60 kmh-1 |
|
Answer» How long a train will take to travel a distance of 200 km with a speed of 60 kmh-1 |
|
| 260. |
Which of the following is the S.I. unit of density? |
|
Answer» Which of the following is the S.I. unit of density? |
|
| 261. |
Which constellation represents a hunter with weapons? |
|
Answer» Which constellation represents a hunter with weapons? |
|
| 262. |
Why should we multiply 5/18 to km/h to convert into m/s |
| Answer» Why should we multiply 5/18 to km/h to convert into m/s | |
| 263. |
13.why a person does not feel that he is standing downward in south pole as compared to the person who is in the north pole. |
| Answer» 13.why a person does not feel that he is standing downward in south pole as compared to the person who is in the north pole. | |
| 264. |
65. two person are located at (0,0) and (0,-d). they start moving with constant velocity v1 and v2 directed along x and y axis respectively. then find the minimum separation between the two ? |
| Answer» 65. two person are located at (0,0) and (0,-d). they start moving with constant velocity v1 and v2 directed along x and y axis respectively. then find the minimum separation between the two ? | |
| 265. |
What is electrical energy and mechanical energy? What are the differences between the two? |
| Answer» What is electrical energy and mechanical energy? What are the differences between the two? | |
| 266. |
The process by which heat flows from the region of higher temperature to the region of lower temperature by actual movement of material particles is called |
|
Answer» The process by which heat flows from the region of higher temperature to the region of lower temperature by actual movement of material particles is called |
|
| 267. |
Dis vrai ou faux : VRAI FAUX (a) La dame aimera partir le 2 décembre. (b) Son fils a 10 ans. (c) Les enfants ont une réduction de 40% jusqu'à 12 ans. (d) Il y a un train à 6h. (e) La dame paie 168 € . |
||||||||||||||||||
Answer» Dis vrai ou faux :
|
|||||||||||||||||||
| 268. |
Identify the part which receives electric current and causes the bell hammer to move and ring the bell: |
|
Answer» Identify the part which receives electric current and causes the bell hammer to move and ring the bell: |
|
| 269. |
difference between ω and v in circular motion |
| Answer» difference between ω and v in circular motion | |
| 270. |
A Carnot heat engine has an efficiency of 16. When the temperature of sink is reduced by 62∘C, its efficiency get doubled. The temperature of the source is : |
|
Answer» A Carnot heat engine has an efficiency of 16. When the temperature of sink is reduced by 62∘C, its efficiency get doubled. The temperature of the source is : |
|
| 271. |
Does refrigerator obeys thermodynamics law |
| Answer» Does refrigerator obeys thermodynamics law | |
| 272. |
A bullet of mass 0.050 kg travelling at 300 ms−1 penetrates inside a wooden block of 3 kg. The block now embedded with the bullet start moving together. What will be the combined velocity of the block and the bullet? |
|
Answer» A bullet of mass 0.050 kg travelling at 300 ms−1 penetrates inside a wooden block of 3 kg. The block now embedded with the bullet start moving together. What will be the combined velocity of the block and the bullet? |
|
| 273. |
Does motion have a proper definition? |
| Answer» Does motion have a proper definition? | |
| 274. |
Write the mirror formula for the case of convex mirror. What are the assumptions made in this derivation? [2 MARKS] |
|
Answer» Write the mirror formula for the case of convex mirror. What are the assumptions made in this derivation? [2 MARKS] |
|
| 275. |
In the given figure, when light emerges from the glass slab, the light ray |
|
Answer» In the given figure, when light emerges from the glass slab, the light ray |
|
| 276. |
Why light is dispersed only in prism, not in lenses? |
|
Answer» Why light is dispersed only in prism, not in lenses? |
|
| 277. |
Velocity time graph of increasing velocity |
| Answer» Velocity time graph of increasing velocity | |
| 278. |
Certain force acting on 20 kg mass changes its velocity from 5 ms−1 to 2 ms−1. Calculate the work done by the force. |
|
Answer» Certain force acting on 20 kg mass changes its velocity from 5 ms−1 to 2 ms−1. Calculate the work done by the force. |
|
| 279. |
39. What is time period of small oscillation of that Mass? U(x)=U^° (1-cosα x) |
| Answer» 39. What is time period of small oscillation of that Mass? U(x)=U^° (1-cosα x) | |
| 280. |
Question 1What is sound and how is it produced? |
|
Answer» Question 1 What is sound and how is it produced? |
|
| 281. |
38.a short bar magnet oscillates in VMM with a frequency of 10Hz. if a downward current of 15A is established in a long thin vertical wire placed 20cm west of the magnet its frequency was found to be 5Hz. if a TG containing 500 turns with a radius of each turn 4pi cm is used at that place and a current of 10mA is allowed to pass through it. find the deflection of magnetic needle in the TG |
| Answer» 38.a short bar magnet oscillates in VMM with a frequency of 10Hz. if a downward current of 15A is established in a long thin vertical wire placed 20cm west of the magnet its frequency was found to be 5Hz. if a TG containing 500 turns with a radius of each turn 4pi cm is used at that place and a current of 10mA is allowed to pass through it. find the deflection of magnetic needle in the TG | |
| 282. |
Q19. Consider the following statements about Navika Sagar Parikrama: 1. This is the first-ever Indian circumnavigation of the globe by an all-women crew. 2. The crew is collating and updating meteorological, ocean and wave data on regular basis for accurate weather forecast by India Meteorological Department (IMD), as also monitoring marine pollution on high seas. Which of the following statements are correct? |
|
Answer» Q19. Consider the following statements about Navika Sagar Parikrama: 1. This is the first-ever Indian circumnavigation of the globe by an all-women crew. 2. The crew is collating and updating meteorological, ocean and wave data on regular basis for accurate weather forecast by India Meteorological Department (IMD), as also monitoring marine pollution on high seas. Which of the following statements are correct? |
|
| 283. |
Which part of an electric bulb emits light? Explain with the help of a diagram. |
|
Answer» Which part of an electric bulb emits light? Explain with the help of a diagram. |
|
| 284. |
Two popoint charges q1 and q2 of magnitude +10^-8 c and -10^-8 c respectively are placed 0.1 m apart. Calculate the electric fields at points A, B, C |
| Answer» Two popoint charges q1 and q2 of magnitude +10^-8 c and -10^-8 c respectively are placed 0.1 m apart. Calculate the electric fields at points A, B, C | |
| 285. |
What is electromagnets??? Tell 2 ways we can increase the magnetic field produced by a coil??????????? ? ? |
| Answer» What is electromagnets??? Tell 2 ways we can increase the magnetic field produced by a coil??????????? ? ? | |
| 286. |
34.What is relation between normality and molarity 1N is equal to how much molarity |
| Answer» 34.What is relation between normality and molarity 1N is equal to how much molarity | |
| 287. |
"A substance expands on heating and contracts on cooling”. Justify this statement. [2 MARKS] |
|
Answer» "A substance expands on heating and contracts on cooling”. Justify this statement. [2 MARKS] |
|
| 288. |
Two rods of different materials having coefficients of linear expansions α1 and α2 and young's modulus of elasticity Y1 and Y2 respectively, are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature without bending. If α1:α2=2:3, then the thermal stress developed in the two rods will be equal if Y1:Y2 is equal to |
|
Answer» Two rods of different materials having coefficients of linear expansions α1 and α2 and young's modulus of elasticity Y1 and Y2 respectively, are fixed between two rigid massive walls. The rods are heated such that they undergo the same increase in temperature without bending. If α1:α2=2:3, then the thermal stress developed in the two rods will be equal if Y1:Y2 is equal to |
|
| 289. |
While measuring the temperature of a pot of water while heating, the markings on the laboratory thermometer were erased. After a certain time of heating, the mercury level is observed to be constant. What could have been the reading on the thermometer? |
|
Answer» While measuring the temperature of a pot of water while heating, the markings on the laboratory thermometer were erased. After a certain time of heating, the mercury level is observed to be constant. What could have been the reading on the thermometer? |
|
| 290. |
Why should a person not stand under a tree during a thunderstorm? |
|
Answer» Why should a person not stand under a tree during a thunderstorm? |
|
| 291. |
The amplitude of a wave disturbance propagating in the positive y-axis is given byy=1/1+x^{2 }at t=0s and y=1/\lbrack1+(x-1)^2 \rbrack at t=2s. Then find wave speed.1) 1 m/s 2) 1.5 m/s 3) 0.5 m/s 4) 2 m/s |
| Answer» The amplitude of a wave disturbance propagating in the positive y-axis is given byy=1/1+x^{2 }at t=0s and y=1/\lbrack1+(x-1)^2 \rbrack at t=2s. Then find wave speed.1) 1 m/s 2) 1.5 m/s 3) 0.5 m/s 4) 2 m/s | |
| 292. |
14.A 2 kg box sits on a 3 kg box which sits on a 5 kg box. The 5 kg box rests on a table top. What is the Normal forceexerted on the 5 kg box by the table top?(1) 19.6 N(2) 29.4 N(3) 49 N(4) 98 N |
| Answer» 14.A 2 kg box sits on a 3 kg box which sits on a 5 kg box. The 5 kg box rests on a table top. What is the Normal forceexerted on the 5 kg box by the table top?(1) 19.6 N(2) 29.4 N(3) 49 N(4) 98 N | |
| 293. |
A person move along the boundary of a square park of side 10m in 40s . What will be the magnitude of displacement of the person at the end of 3 minutes |
| Answer» A person move along the boundary of a square park of side 10m in 40s . What will be the magnitude of displacement of the person at the end of 3 minutes | |
| 294. |
Spherical wavefronts shown in the figure, are incident on a plane mirror. The reflected wavefront will be, as shown in, |
|
Answer» Spherical wavefronts shown in the figure, are incident on a plane mirror. The reflected wavefront will be, as shown in, |
|
| 295. |
A boy moves 400m towards north ,300m towards west and again 400m towards south . Calculate the displacement of the boy from the initial position? |
| Answer» A boy moves 400m towards north ,300m towards west and again 400m towards south . Calculate the displacement of the boy from the initial position? | |
| 296. |
An object is placed in front of a plane mirror. If the mirror is moved away from the object through a distance x, by how much distance will the image move |
| Answer» An object is placed in front of a plane mirror. If the mirror is moved away from the object through a distance x, by how much distance will the image move | |
| 297. |
What do you mean by elementary charge? What is its charge? What is the SI unit of current? |
|
Answer» What do you mean by elementary charge? What is its charge? What is the SI unit of current? |
|
| 298. |
In a conductor electrons are flowing from B to A. What is the direction of convetional current? |
|
Answer» In a conductor electrons are flowing from B to A. What is the direction of convetional current? |
|
| 299. |
Why are only certain gases able to hold heat |
|
Answer» Why are only certain gases able to hold heat |
|
| 300. |
hies 3 A convergent beam is incident on concave mirror, what will be (1) Real and in front of mirror (3) Real and behind the mirror the nature of image? 9. (2) Virtual and in front of mirror (4) Virtual and behind the mirror |
| Answer» hies 3 A convergent beam is incident on concave mirror, what will be (1) Real and in front of mirror (3) Real and behind the mirror the nature of image? 9. (2) Virtual and in front of mirror (4) Virtual and behind the mirror | |
