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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.
| 2151. |
Q88. Hyperloop technology was recently in news. With reference to the technology, which of the following statement(s) is/are correct? 1. It is a system of magnetically levitating capsules that are sent at high speeds through high pressure tubes. 2. Recently it has been implemented for practical use in USA for commercial purpose Select the correct answer using the codes given. |
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Answer» Q88. Hyperloop technology was recently in news. With reference to the technology, which of the following statement(s) is/are correct? 1. It is a system of magnetically levitating capsules that are sent at high speeds through high pressure tubes. 2. Recently it has been implemented for practical use in USA for commercial purpose Select the correct answer using the codes given. |
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| 2152. |
Question 4 (c) A group of stars that appear to form a pattern in the sky is known as a __ _________. |
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Answer» Question 4 (c) A group of stars that appear to form a pattern in the sky is known as a __ _________. |
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| 2153. |
Which of the following statements are true? |
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Answer» Which of the following statements are true? |
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| 2154. |
The radius of a soap bubble is r and the surfacetension of soap solution is T. Keeping thetemperature constant, the extra energy needed todouble the radius of the soap bubble by blowing, is(1) 16 ㎡T(3) 8 TT(2) 32 ㎡T(4) 24 ㎡T |
| Answer» The radius of a soap bubble is r and the surfacetension of soap solution is T. Keeping thetemperature constant, the extra energy needed todouble the radius of the soap bubble by blowing, is(1) 16 ㎡T(3) 8 TT(2) 32 ㎡T(4) 24 ㎡T | |
| 2155. |
Why does the nose of some people start bleeding when an aeroplane climbs up suddenly? |
| Answer» Why does the nose of some people start bleeding when an aeroplane climbs up suddenly? | |
| 2156. |
Two small spheres with masses m1 and m2 hang on weightless, insulating threads of lenght L1 and L2. The two spheres carry charges q1 and q2. The spheres hang such that they are at the same level with one another the threads are inclined at angle r1 and r2 with vertical. Show that the angle r1 and r2 will be equal when m1=m2, L1=L2. |
| Answer» Two small spheres with masses m1 and m2 hang on weightless, insulating threads of lenght L1 and L2. The two spheres carry charges q1 and q2. The spheres hang such that they are at the same level with one another the threads are inclined at angle r1 and r2 with vertical. Show that the angle r1 and r2 will be equal when m1=m2, L1=L2. | |
| 2157. |
Consider the following statements and choose the correct option.1. Magnetic field lines form closed loops.2. No two field lines intersect |
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Answer» Consider the following statements and choose the correct option. |
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| 2158. |
What is meant by 'incident ray'? |
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Answer» What is meant by 'incident ray'? |
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| 2159. |
If we put iron nail in water it sinks and why doesn't a massive ship sink in water? |
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Answer» If we put iron nail in water it sinks and why doesn't a massive ship sink in water? |
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| 2160. |
A railway engineer who looks after the maintenance of rails is quite fed up of the extensive maintenance that is required at the hundreds of joints in the rails. The gaps between short sections of rails have to be constantly checked. Also they cause the rail ride to be rough. He wants to design a railroad without these joints. However, he knows that expansion on heating is a fact of life and cannot be done away with.He thinks of using much longer rails to reduce the number of gaps, and hence the maintenance. However, it is pointed out by a colleague that this would not work because longer rails also meant that the gaps had to be longer. This would make the ride rougher and could also prove to be dangerous–the train could derail at these joints.Answer these questions.1. Why would the gaps be longer if longer sections of rails are used?2. Can you offer a solution that would do away with the gaps? |
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Answer» A railway engineer who looks after the maintenance of rails is quite fed up of the extensive maintenance that is required at the hundreds of joints in the rails. The gaps between short sections of rails have to be constantly checked. Also they cause the rail ride to be rough. He wants to design a railroad without these joints. However, he knows that expansion on heating is a fact of life and cannot be done away with. He thinks of using much longer rails to reduce the number of gaps, and hence the maintenance. However, it is pointed out by a colleague that this would not work because longer rails also meant that the gaps had to be longer. This would make the ride rougher and could also prove to be dangerous–the train could derail at these joints. Answer these questions. 1. Why would the gaps be longer if longer sections of rails are used? 2. Can you offer a solution that would do away with the gaps? |
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| 2161. |
If a mirror forms diminished, real and inverted image then choose the type of the mirror and the position of object. |
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Answer» If a mirror forms diminished, real and inverted image then choose the type of the mirror and the position of object. |
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| 2162. |
why is the potential of a conductor connected to earth is taken as 0? |
| Answer» why is the potential of a conductor connected to earth is taken as 0? | |
| 2163. |
a closed vessel is half filled with water and from other half air is pumped out then ?? 1. water level will rise up in the vessel 2. the pressure at surface of water increases 3. the force by the watwr on the bottom by vessel will decrease 4. all of th |
| Answer» a closed vessel is half filled with water and from other half air is pumped out then ?? 1. water level will rise up in the vessel 2. the pressure at surface of water increases 3. the force by the watwr on the bottom by vessel will decrease 4. all of th | |
| 2164. |
Question 1Can any source of energy be pollution-free? Why or why not? |
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Answer» Question 1 |
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| 2165. |
A coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if the coin and the piece of paper are dropped in the vacuum? Give reasons for your answer. |
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Answer» A coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if the coin and the piece of paper are dropped in the vacuum? Give reasons for your answer. |
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| 2166. |
An air conditioner is rated 240V ,1.5 kW . The ac is switched on for 8 hours a day. How much electric energy is consumed in 30 days? Please also explain the corresponding formula used for this numerical... |
| Answer» An air conditioner is rated 240V ,1.5 kW . The ac is switched on for 8 hours a day. How much electric energy is consumed in 30 days? Please also explain the corresponding formula used for this numerical... | |
| 2167. |
If xy+yz+xz=0, then find 1/(x^2-yz)+1/(y^2-xz)+1/(z^2-xy) |
| Answer» If xy+yz+xz=0, then find 1/(x^2-yz)+1/(y^2-xz)+1/(z^2-xy) | |
| 2168. |
Why outside the sphere magnitude of the electric feild is not same |
| Answer» Why outside the sphere magnitude of the electric feild is not same | |
| 2169. |
Which of the following graph represents the variations of resistivity (ρ) with the temperature (T) for copper ? |
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Answer» Which of the following graph represents the variations of resistivity (ρ) with the temperature (T) for copper ? |
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| 2170. |
We use ball bearings between the hub and axle of the ceiling fan. Why? |
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Answer» We use ball bearings between the hub and axle of the ceiling fan. Why? |
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| 2171. |
Mark the correct option:The value of (3m)n, for every pair of integers (m, n), is A. 3m+nB. 3mnC. D. 3m + 3n |
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Answer» Mark the correct option: The value of (3m)n, for every pair of integers (m, n), is A. 3m+n B. 3mn C. D. 3m + 3n |
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| 2172. |
A force is applied on a square area of a side L.if the percentage error in the measurement of L is 2% and then that in F is 4%, what is the maximum percentage error in pressure. |
| Answer» A force is applied on a square area of a side L.if the percentage error in the measurement of L is 2% and then that in F is 4%, what is the maximum percentage error in pressure. | |
| 2173. |
A calorimeter contains 0.2kg of water at 30∘C. 0.1kg of water at 60∘C is added to it, the mixture is well stirred and the resulting temperature is found to be 35∘C. The thermal capacity of the calorimeter is ( specific heat of water =4200Jkg−1K−1 |
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Answer» A calorimeter contains 0.2kg of water at 30∘C. 0.1kg of water at 60∘C is added to it, the mixture is well stirred and the resulting temperature is found to be 35∘C. The thermal capacity of the calorimeter is ( specific heat of water =4200Jkg−1K−1 |
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| 2174. |
A body of 10kg kept on a rough horizontal surface which can offer a maximum frictional force of 40N. What will be the frictional force when applied force is 20N?1)40N 2)30N4)200N 3)20N |
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Answer» A body of 10kg kept on a rough horizontal surface which can offer a maximum frictional force of 40N. What will be the frictional force when applied force is 20N? 1)40N 2)30N 4)200N 3)20N |
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| 2175. |
Two point charge of +3 micro coulomb and +4 micro coulomb repel each other with a force of 10N. If each is given an additional charge of -6 micro coulomb, the the new force will be? |
| Answer» Two point charge of +3 micro coulomb and +4 micro coulomb repel each other with a force of 10N. If each is given an additional charge of -6 micro coulomb, the the new force will be? | |
| 2176. |
if 30g of NOx (g) occupies 22.4 L at STP then the value of x i |
| Answer» if 30g of NOx (g) occupies 22.4 L at STP then the value of x i | |
| 2177. |
The voices of men and children are different due to: |
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Answer» The voices of men and children are different due to: |
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| 2178. |
Name the quantity whose unit is 'Hertz'. |
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Answer» Name the quantity whose unit is 'Hertz'. |
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| 2179. |
What does Earth's tilted axis mainly affect? |
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Answer» What does Earth's tilted axis mainly affect? |
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| 2180. |
Two bodies B and C with intial temperatures T1 and T2are brought in contact. Temperature at thermal equilibrium is T. If T2 >T1 then, |
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Answer» Two bodies B and C with intial temperatures T1 and T2are brought in contact. Temperature at thermal equilibrium is T. If T2 >T1 then, |
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| 2181. |
Question 16Look at the figure. Can the image of the child in it be obtained on a screen? |
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Answer» Question 16 Look at the figure. Can the image of the child in it be obtained on a screen? |
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| 2182. |
6. Octahedral void at edge center in ccp arrangement is equally distributed amongst |
| Answer» 6. Octahedral void at edge center in ccp arrangement is equally distributed amongst | |
| 2183. |
Compare sound of a baby with sound of a man. Even if both have same loudness, how they differ. Explain the factor which causes the difference. [3 MARKS] |
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Answer» Compare sound of a baby with sound of a man. Even if both have same loudness, how they differ. Explain the factor which causes the difference. [3 MARKS] |
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| 2184. |
After the sun, the next nearest star to the Earth is: (a) Alpha Centauri (b) Pole Star (c) Sirius (d) Proxima Centauri |
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Answer» After the sun, the next nearest star to the Earth is: (a) Alpha Centauri (b) Pole Star (c) Sirius (d) Proxima Centauri |
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| 2185. |
Suggest three measures to protect ourselves from lightning. |
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Answer» Suggest three measures to protect ourselves from lightning. |
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| 2186. |
A cube is pushed in such a way that it is sliding on a horizontal surface. Frictional force acting on the cube can be increased by: |
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Answer» A cube is pushed in such a way that it is sliding on a horizontal surface. Frictional force acting on the cube can be increased by: |
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| 2187. |
When electrodes are immersed in water and electricity is passed, in which electrode hydrogen and oxygen bubbles arises? [2 MARKS] |
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Answer» When electrodes are immersed in water and electricity is passed, in which electrode hydrogen and oxygen bubbles arises? |
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| 2188. |
Choose the best option about lightning. |
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Answer» Choose the best option about lightning. |
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| 2189. |
___ is the model in which the earth is considered as the center of the universe wherein all other celestial objects move around it. |
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Answer» |
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| 2190. |
if 3x =a+b+ c ,then find the value of (x - a)^3 + (x -b)^3 + (x -c)^3 - 3 (x -a) (x -b) (x - c). |
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Answer» if 3x =a+b+ c , then find the value of (x - a)^3 + (x -b)^3 + (x -c)^3 - 3 (x -a) (x -b) (x - c). |
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| 2191. |
In the arrangement shown, neglect the mass of the ropes and pulleyWhat must be the value of m to keep the system in equilibrium? There isno friction anywhere.М30^° (A)(B)2M(C)M/2(D)M/4mTheTW3 3 8 |
| Answer» In the arrangement shown, neglect the mass of the ropes and pulleyWhat must be the value of m to keep the system in equilibrium? There isno friction anywhere.М30^° (A)(B)2M(C)M/2(D)M/4mTheTW3 3 8 | |
| 2192. |
Light is going from some denser medium to air. The refractive index of the medium is 1.7.Calculate the angle of incidence, such that if it is further increased, total internal reflection will occur. |
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Answer» Light is going from some denser medium to air. The refractive index of the medium is 1.7.Calculate the angle of incidence, such that if it is further increased, total internal reflection will occur. |
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| 2193. |
Explain the charging by induction in terms of movement of electrons. |
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Answer» Explain the charging by induction in terms of movement of electrons. |
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| 2194. |
One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason. |
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Answer» One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason. |
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| 2195. |
Like charges ___ and unlike charges ___ each other. |
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Answer» Like charges ___ and unlike charges ___ each other. |
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| 2196. |
In which of the following cases, irregular reflection is taking place? |
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Answer» In which of the following cases, irregular reflection is taking place? |
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| 2197. |
explain the graph showing the variation of electric potential with dis†an ce r due to a point charge |
| Answer» explain the graph showing the variation of electric potential with dis†an ce r due to a point charge | |
| 2198. |
What is the magnitude of friction in pure rolling on wedgh ? |
| Answer» What is the magnitude of friction in pure rolling on wedgh ? | |
| 2199. |
Question 9State which of the following situations are possible and give an example for each of these:(a) An object with a constant acceleration but with zero velocity.(b) An object moving in a certain direction with an acceleration in the perpendicular direction. |
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Answer» Question 9 State which of the following situations are possible and give an example for each of these: (a) An object with a constant acceleration but with zero velocity. (b) An object moving in a certain direction with an acceleration in the perpendicular direction. |
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| 2200. |
A circuit whose resistance R is connected to n similar cells. If the current in the circuit is the same whether the cells are connected in series or parallel, then the internal resistance r of each cell is given by |
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Answer» A circuit whose resistance R is connected to n similar cells. If the current in the circuit is the same whether the cells are connected in series or parallel, then the internal resistance r of each cell is given by |
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