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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
What is the definition of physics ? |
| Answer» Physics is brach ofscience<br>Physics is a branch of science deals with the study of nature , natural laws n natural phenomena occuring in the universe.<br>Physics is the study of nature and its natural phenomena.<br>Physics education is the sum of those experience which come to the individual through movement . | |
| 152. |
A v=(20+-1)w and r=(8+-2)ohm find the current with error limits |
| Answer» We know that v=IR then I=V/R. After that, delta i/i = delta v/v + delta R/R . I=V/R = 20/8= 2.5A .AFTER THAT delta i/2.5 =1/20+2/8, delta i/2.5=2+10/40, delta i/2.5 =12/40, delta i= 12× 2.5/40 , then 1.5 /2 , = 0.75A .REPRESENTATION OR ERROR LIMITS : i +- delta i. , 2.5 +_0.75A .Where I/i= current , R= resistance and ,v= volt. Thanks for ask.. | |
| 153. |
A man can swim at speed of 4 km in stikl water |
| Answer» Are question complete to karte ....... | |
| 154. |
What is gravitional force |
| Answer» Every object in the universe attract every other object by a force called as gravititional force<br>It is defined as the force exerted b/w 2 object in universe.<br>Gravitational force = F m¹m²/ r² Where F=force, m¹=mass of 1 object ,m²=mass of 2 object ,r= distance b/w them .<br>9.8 m/s | |
| 155. |
There are how much types of errors |
| Answer» There r 4 types of errors ....constant error.... Random errors.... System errors... Least count errors... | |
| 156. |
Find the relative error in z ,if z =a4b1/3/cd3/2 |
| Answer» | |
| 157. |
What is the relative strength of gravitational force |
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| 158. |
The states of motion and rest are relative. Explain |
| Answer» Are you the classmate of saurabh | |
| 159. |
Which and how many dimensions should i memorisse? |
| Answer» Thx<br>It is important to memorize atleast 20 dimensions which is given in book.... E. g...Force... Pressure... Strain... Velocity... Electric current... Impulse.. Etc... But u can do more as u want... ? | |
| 160. |
If vector A=3icap+2jcap |
| Answer» | |
| 161. |
Find height of tower if stone is released and travel 40m in last 2sec |
| Answer» | |
| 162. |
Calculate efficiency of a carnot engine working between 110 degree celsus & 10 degree celsus |
| Answer» | |
| 163. |
How do apply the correct formula for the question |
| Answer» By reading it properly nd understanding the meaning of every word of question... Nd for that u need to know English words... Hope it helps u little... ? | |
| 164. |
Derivation of a=v^2 /r |
| Answer» | |
| 165. |
Explain the motion |
| Answer» Motion is\xa0the action or process of moving or being moved. | |
| 166. |
Difference between centripetal and centrifugal force |
| Answer» Its simpleCentripetal force acts towards the centre of the circular path.And Centrifugal acts outwards. | |
| 167. |
What is seven dimensions of the world |
| Answer» M,l,t,luminous intensity,electric current,amount of substance,temperature<br>Length, Mass, Time, Electric current, Thermodynamic Temperature, Amount of substance and Luminous intensity are the seven dimensions. | |
| 168. |
Why acceleration due to gravity is negative? Explain in trums of direction |
| Answer» | |
| 169. |
What is bernolies therom |
| Answer» Bernoulli\'s principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid\'s potential energy.<br>Pressure exerted by liquid is same in all directions | |
| 170. |
Define planck\'s constant. |
| Answer» Planck\'s constant is a fundamental constant, equal to the energy of a quantum of electromagnetic radiation divided by its frequency, with a value of 6.626 × 10−34 joule-seconds. | |
| 171. |
Which book we will study to gain better marks in physics ... |
| Answer» Refrence book sandip & pradip ka<br>I think pradeep\'s fundamental physics is best | |
| 172. |
What quantity has no unit but dimension |
| Answer» There are many quantity like radian and steradian<br>There is quantity radian and steradian . These are units but no dimensions<br>Radian and steradian<br>There is no such quantity | |
| 173. |
Xsq+5 |
| Answer» x=√5 | |
| 174. |
Question on relative velocity |
| Answer» Give the formula of raltaive velocity with its defination | |
| 175. |
If velocity is equal to 4t³—2t. Find acceleration when displacement is 2m. |
| Answer» | |
| 176. |
If pressure p =t2-alpha /beta *alfa then find the dimensions formula of alfa and beath |
| Answer» | |
| 177. |
4th law of motion by newton |
| Answer» Newton’s\xa0First Law of Motion\xa0also known as\xa0Law of Inertia\xa0states that every object persists to stay in uniform motion in a straight line or in the state of rest unless an external force acts upon it. In a simpler form, the first law of motion may also be stated as\xa0"If the net external force on a body is zero, its acceleration is zero. Acceleration can be non-zero only if there is a net external force on the body".Newton’s Second Law of Motion\xa0states that force is equal to the change in momentum per change in time. For a constant mass, force equals mass times acceleration, i.e.F = maThus,\xa0{tex}\\vec { F } \\propto \\frac { \\Delta \\vec { p } } { \\Delta t } \\text { or } \\vec { F } = k \\frac { \\Delta \\vec { p } } { \\Delta t }{/tex}, where k is a constant of proportionality,\xa0{tex}\\Delta p{/tex} is the change in momentum and p = mv.Newton’s Third Law of Motion:\xa0It states that "For every action, there is an equal and opposite reaction".<br>4th law ab tk newton n nhi diya... Newton gya...tum de skte ho...its ur choice...3 hi pdh lo<br>4th law????? are u searious?\u200d♂️?\u200d♂️ | |
| 178. |
differenciations numericls |
| Answer» Starting from f (x)=d/dx | |
| 179. |
f(x)=sin small x multiply cos small x |
| Answer» f(x) = sinx X cos x 2f(x) = 2 sinx cosx = Sin (2x)Therefore . f(x) = (sin 2x ) / 2 | |
| 180. |
Differentiation f(x)=xcube-7x+5 |
| Answer» | |
| 181. |
What is direvation |
| Answer» It is a powwr of dimensions of which fundamental physical quantities are reached as physical quantities<br>Mathematically prove in phycis | |
| 182. |
What is coherrent system of units |
| Answer» coherent system of units is a system of units based on a system of quantities in such a way that the equations between the numerical values expressed in the units of the system have exactly the same form, including numerical factors, as the corresponding equations between the quantit | |
| 183. |
Whst is the law of conservation of energy |
| Answer» Energy can be neither created nor destroyed but it can transform from one form to another<br>Enwrgy can neither be created nor destroyed . Our van be c changed form one being to other<br>Energy cannot distroy, only it transfer from one body to anothet<br>Energy neither be created nor destroyed . Only being transfer<br>Thank u<br>energy can neither be created nor destroyed. Only being transferred | |
| 184. |
Using calculus method drive expression when distance travelled by particle in nth second |
| Answer» | |
| 185. |
Define dimension |
| Answer» It is the powers to which the fundamental physical quantities are raised to represent the given physical quantity | |
| 186. |
Give two discoveries of physics used in your daily life |
| Answer» Bulb and themometer | |
| 187. |
Defination of errors |
| Answer» | |
| 188. |
Which questions have to be must solved in physics |
| Answer» Numerical +conceptual question<br>Numerical questions | |
| 189. |
When we use integration in any formula |
| Answer» If we want to get the sum of any directional formula then there we use intregation | |
| 190. |
Important Question and answer for chapter 2 and 3 |
| Answer» Ncert questions and sl arora questions are intresting and important tooo..... | |
| 191. |
Chapter 2 example 2.1 ncert |
| Answer» | |
| 192. |
calculate angular velocity of hand clock? |
| Answer» \tThe period of the hour hand of clock, T = 12 hours =\xa0{tex}12 \\times 60 \\times 60{/tex}\xa0seconds\tTherefore, Angular velocity of the hour hand of a clock, {tex}\\omega=\\frac{2 \\pi}{T}=\\frac{2 \\times 3.14}{12 \\times 60 \\times 60}{/tex}= 1.45\xa0{tex}\\times{/tex}\xa010-4\xa0rad s-1\tThe period of the second hand of clock, T = 1 minute = 60 seconds\tTherefore,\xa0Angular velocity of the second hand of a clock\xa0{tex}\\omega=\\frac{2 \\pi}{T}=\\frac{2 \\pi}{60}{/tex}= 0.105\xa0rad s-1<br>T to the power -1<br>T-1 | |
| 193. |
sir can yoy give me some question of significant figures rules numerical based |
| Answer» 00.00000052308670000Calculate no. of significant figures into it | |
| 194. |
What is physices |
| Answer» Phiysics is a branch of science which has originated from Greek word \'fusis\' means nature. So physics deals with nature and natural phenomena<br>Physics is the branch of science which deals with nature and natural substances<br>It is a systematic formulated organised knoledge which can be gained by any human through different experiments observations performances<br>It is a branch of science that deals with nature and natural phenomenon<br>Physics is a part of science.<br>Physics is a subject | |
| 195. |
What is application of scalar product of two vector . How it is different from vector product in use |
| Answer» | |
| 196. |
Calculate the astronomical units in 1m how many parsac are there in 1m |
| Answer» As we know that itf we multiply and divide by same number, answer does not change. Therefore, multiply and divide by 0 . Answer is 0 | |
| 197. |
What is Error and Dimension ?? |
| Answer» | |
| 198. |
what is kinetic energy? |
| Answer» Energy which is possessed by the virtue of its motion. E=1/2mv2<br>energy which a body possesses by virtue of being in motion.<br>Kinetic energy is the energy which is posseses from the object E =1/2 mv^2 | |
| 199. |
Find the angle between two vectors p and q resultant is Rsq = psq + qsq |
| Answer» | |
| 200. |
Calcus method |
| Answer» | |