This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Number of spectral lines in balmer series when an electron |
| Answer» 1 SPECTRAL LINE in BALMER SERIES | |
| 2. |
Name two units of length which are bigger than a metre how are they related to the metre |
| Answer» KILOMETER hectameter because they both have METER in it | |
| 3. |
Which is bigger a coloumb or charge on an electron? |
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Answer» 1 COULOMB charge is bigger because 1coulomb has 6.25×10^18 ELECTRONS. And 1 ELECTRON has a charge of 1.6×10^-19 coulomb. |
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| 4. |
Which phenomenon proves particle nature of light? |
| Answer» PHOTOELECTRIC EFFECT | |
| 5. |
What is the work done by the force of gravity on a satellite moving round the earth ? |
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Answer» When a satellite moves around the Earth in a circular path, then the force of gravity acts on it DIRECTED TOWARDS the CENTRE. The motion of the satellite is in the horizontal PLANE. Therefore, the force of gravity of Earth on the satellite and the DIRECTION of motion of satellite are perpendicular to each other. Therefore, net work done = Fs cos 900 = 0. That is, the work done by the force of gravity on a satellite moving around the Earth is zero. |
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| 6. |
Uses of aneroid barometer |
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Answer» It is a device which is mainly used for measuring atmospheric PRESSURE CAUSED by EXTERNAL air |
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| 7. |
We can hold a matchstick while it is burning. why? |
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Answer» Hey ....my friend ..when a MATCHSTICK burns it PRODUCES heat and we have no tolerate heat so we can't HOLD a burning matchstick..HOPE this will HELP u my friend.... |
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| 9. |
A cyclists is travelling at 15ms-1 she applies brakes so that she does not collide with a wall 18m away. What deceleration must she have. |
| Answer» 3 as the FORMULA is a =v-u÷t | |
| 10. |
Identify modal fields in tm mode rectangular waveguide |
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Answer» A hollow |
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| 11. |
What type of motion is exhibited by freely falling body |
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Answer» Heyyyyy here's ur answer |
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| 12. |
The angle made by the vector a is equals ti icap + j cap woth x-axis |
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Answer» RESOLVING the VECTORS into its COMPONENTS, a = 1i + 1j Now angle made with the x-axis, tanθ = y/x = 1/1 = 1 Therefore, θ = 45 degrees |
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| 13. |
Hey !!!!! friends......... what is electric potential and potential difference........ ....... |
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Answer» Hi Mehak1503, |
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| 14. |
Distinguish between addition polymerisation and condensation polymerisation |
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Answer» In addition POLYMERISATION no side product is made. |
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| 15. |
an object is thrown upward with initial velocity 5m/s and accel. 10m/s². What will be the height attained by it and how much time will it take to reach there? |
| Answer» HOPE it will HELP you. ..m.... | |
| 16. |
a block of mass is released from rest from a height. the block slides on a frictionless track and reaches the bottom. what is the velocity of the block when it reaches the bottom |
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Answer» Velocity of BLOCK when it REACHES at BOTTOM is. =√[2g*HEIGH] |
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| 17. |
Write three value of avogadro' s constant |
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Answer» 12 grams of 12C, with the mass number 12 (ATOMIC number 6), has the same number of CARBON atoms,6.022×1023. AVOGADRO's number is a dimensionless quantity, and has the same numerical value of the Avogadro constant when given in base units. |
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| 18. |
The lower face of an aluminum cube of side 10 cm,is riveted to the floor.A shear modulus of aluminum is 25*10 Nm, find the displacement of the upper edge of the cube |
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Answer» ........?........... |
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| 20. |
Why bakelite is used in electrical switches |
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Answer» Bakelite is a BAD conductor of heat as WELL as electricity. |
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| 22. |
Defination of electricity? |
| Answer» ELECTRICITY is the FLOW of ELECTRON | |
| 23. |
One coloumb of charge is passed through solution of |
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Answer» One COLOUMB of CHARGE is PASSED through the solution of any conductor EVERY SECOND |
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| 24. |
How is the relative density of a liquid measured |
| Answer» TOTAL DENSITY of SUBSTANCES UPON density of WATER | |
| 25. |
A person weight 110.84 on moon whose acceleration due to gravity is 1/6 of that earth. If the value of 'g' on earth is 9.8m/s2 calculate(i) 'g' on moon (ii) mass of person on moon (iii) weight of person on earth |
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Answer» The ATTACHMENT has the ANSWER |
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| 26. |
The distance travelled by a freely falling body in first six seconds? |
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Answer» ACHA bro u= -4g t=1s a= -G s = -4g-g/2 distance travelled is -9g/2 where g is GRAVITATIONAL constant or s=-44.1m/s |
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| 27. |
A body travel's travel's a distance of 3km towards east then 4km towards north and finally 9km towards east . find its displacement |
| Answer» | |
| 28. |
If a force f = (2x + 3x2 )î n acts along x-axis on an object and moves it from x = 2î m to x = 4î m, the work done is |
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Answer» Work DONE is the dot product of force vector and displacement vector |
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| 29. |
Q) two thin lenses (focal lengths f1 and f2 ) are in contact . their equivalent focal length? |
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Answer» F=1÷(1/f1+1/f2).....this MAY be the EQUIVALENT FOCAL LENGTH |
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| 30. |
In What Condition is the distance covered equal to the magnitude of the displacement of the particle? |
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| 31. |
A force of 5n is applied on 20kg mass at rest. the work done in third second is |
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Answer» Acceleration=5/20 |
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| 32. |
Differentiate between g and G |
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Answer» G stands for NEWTON's universal GRAVITATIONAL constant, WHEREAS gstands for the acceleration DUE to gravity at a certain point. G = 6.67300 × 10-11 N.m2.kg-2. ... G is a scalar quantity whereas g is a vector qualtity. |
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| 34. |
A gigen wire of resistance 1ohms is stretched to double its length .what will be its new resistance |
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Answer» ANSWER |
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| 35. |
A given wire of resistance 1ohms is stretched to double its length.what will be its new resistance |
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Answer» Hey MATE PLZZ REFER to the ATTACHMENT |
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| 36. |
an object has moved through a distance can it have zero displacement if yes support your answer with examples |
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Answer» Yes it can if the OBJECT COMES back to its ORIGINAL position |
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| 37. |
an aircraft travelling at 600 km per hour accelerates steadily at 10 km per hour per second tracking the speed of sound as 1100 km per hour at the air crafts altitude how long will it take to reach the sound barrier |
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Answer» To reach sound barier |
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| 38. |
What are the advantages of synthetic fibres ? explain. |
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Answer» Most of synthetic FIBERS' disadvantages are related to their low melting TEMPERATURE:Synthetic fibers do not burn more readily than natural. Prone to heat damage. ... More electrostatic CHARGE is GENERATED by RUBBING than with natural fibers |
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| 39. |
WHY ARE SAUCEPAN HANDLES, ELECTRIC PLUG AND SWITCHES MADE OF THERMOSETTING PLASTICS |
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Answer» Plastics are good insulators. they PREVENT the flow of HEAT and ELECTRICITY. |
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| 40. |
A motorcyclist drives from place ato b with a uniform speed of 30km/h^-1 and return from place b to a with a uniform speed of 20km/hr. find average speed |
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Answer» We KNOW that AVERAGE speed, |
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| 41. |
A man who weighs 70kg climbs a staircase carrying a 10kg load on his head. the staircase has 25 steps and each step is 25cm height. the work done by the person is |
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Answer» H = 25 x25 |
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| 42. |
Name the physical quantity measured by area under acceleration time graph |
| Answer» VELOCITY ACCORDING to me.... | |
| 43. |
if the pottential energy of a gas molecule is u=M/r to the power 6 -N/r to the power 12; M andN being positive constants , then the pottential energy at equilibrium must be |
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Answer» The answer is yes, it is not TRUE that the LACK of STATIC checking is ? |
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| 44. |
Define the term centre of mass |
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Answer» It is the point inside a BODY...where the whole mass of the body is SUPPOSED to act. |
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| 45. |
What is the height of center of mass of a solid cone from it's base? |
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Answer» The height of CENTER of mass from BASE = (1/3) of total height of SOLID cone |
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| 46. |
दो डंबल के जोड़े जब एक दूसरे से टकराते है तो कैसी धवनि उत्पन्न होती है |
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Answer» HEY TAB VIBRATING SOUND is CREATED |
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| 47. |
Define state of rest and state of motion and what are the types of motion |
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Answer» REST REFERS to the MOTION when the object does not change it's position with respect to time When the object changes it's position with respect to time it is said to be in motion there are VARIOUS types of motion like - LINEAR MOTION, CURVILINEAR MOTION, RANDOM MOTION, TRANSLATOR MOTION, ROTATOR MOTION, REVOLUTIONARY MOTION, |
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| 48. |
I got comparment in my pysics exam of class 11 |
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Answer» OK!! Don't WORRY Do UR BEST this TIME .✌✌All the best |
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| 49. |
A gun fires two bullets with same velocity at 60° and 30° withhorizontal. The bullets strike at the same horizontal distance.The ratio of maximum height for the two bullets is in the ratio [?] : [?] |
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Answer» FIRST TAKE as range1=range2 then u will GET u1=u2 then RATIO is 1:1,plz mark as BRAINLIST |
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| 50. |
Example of variable acceleration |
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Answer» Hey ...^_^ |
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