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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. |
A composite bar has two segments of equal length L each. Both segments are made of same material butcross sectional area of segment OB is twice that ofOA. The bar is kept on a smooth table with the joint atthe origin of the co-ordinate system attached to the table. Temperature of the composite bar is uniformlyraised by theta. Calculate the x co-ordinate of the joint if coefficient of linear thermal expansion for thematerial is alpha. |
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| 2. |
Two vectors A and B of magnitude 5 units and 7 units make an angle 60 degree with each other the magnitude of the resultant vector ?a) 10.44b) 11.44c) 9.44d) 10.88 |
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| 3. |
Hi friends, can anyone tell me , what is universal gravitation constant? |
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Answer» Answer: the universal gravitation constant relates to the magnitude of the gravitational ATTRACTIVE FORCE between two bodies to their MASSES and the distance between them I hope it is helpful |
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| 4. |
Number of fundamental forces which govern both macroscopic and microscopic phenomena * |
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Answer» <STRONG>Answer: ACCORDING to the PRESENT understanding, there are four fundamental interactions or forces: gravitation, ELECTROMAGNETISM, the weak interaction, and the strong interaction. Their magnitude and behaviour VARY greatly, as described in the table below. |
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| 5. |
Find the initial velocity of a car which is stopped in 10seconds by applying brakes . Theretardation due to brakes is 2.5 ms-2. |
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Answer» Answer: 25 m/s Explanation: Given: To find:
Using the first equation of motion: V=u+at 0=u+ -2.5×10 0=u -25 u=0+25 u=25 m/s The initial velocity of the car is EQUAL to 25 m/s More: |
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| 6. |
Defination of solinoid |
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Answer» a coil of WIRE usually in cylindrical form that when carrying a current acts like a MAGNET so that a movable core is drawn into the coil when a current FLOWS and that is used especially as a SWITCH or control for a MECHANICAL device.... |
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| 7. |
A body is dropped from the top of a tower. It acquires a velocity of 20 m/s on reaching the ground. Calculate the height of the tower. (Take g = 10 m/s2) |
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Answer» Answer: 20m Explanation: |
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| 8. |
What would happen if a fielder stops the fast-moving ball suddenly? Justify your answer by giving 4 points. |
Answer» DURING THE CRICKET MATCH ,WHEN A FIELDER CATCHS A BALL HE PULLS HIS HANDS BACKWARD . THIS HELPS HIM TO REDUSE THE LARGE MOMENTUM OF A FASTLY MOVING BALL . SO THE FIELDER DO NOT GETS INJURY .BUT IF A FIELDER STOPS A FSTLY MOVING BAL SUDDENLY THEN DUE TO A VERY LARGE MOMENTUM OF FASTLY MOVING BALL IT CAN CAUSE INJURY TO THE FIELDER . |
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| 9. |
What is mendeleeff periodic law |
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Answer» Answer: hiiii mate1. the law that the properties of the elements are periodic functions of their atomic numbers.2. Also called MENDELEEV's law. (originally) the statement that the chemical and physical properties of the elements recur PERIODICALLY when the elements are arranged in the order of their atomic weightsi think that helps u THANKS ❤️mark it's BRAINLIEST and PLEASE follow |
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| 10. |
What is the expression to find force is correct |
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Answer» Answer: The formula for force says force is equal to MASS (m) multiplied by ACCELERATION (a). ... Force is measured in NEWTONS (N), mass in kilograms (kg), and acceleration in METERS per second SQUARED ( m/s2 ). Mark me as brainlist |
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| 11. |
a gas mixture contains one mole O2 has and one mole He gas . Find the ratio of specific heat at constant pressure to that at constant volume of the gaseous mixture |
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| 12. |
Usually___ores are concentrated by fourth flotation process |
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Answer» Usually__core_ores are CONCENTRATED by FOURTH FLOTATION PROCESS |
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| 13. |
Define1a.m.u.convert it into Mev. |
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Answer» Answer: m.u (CALLED MASS defect) releases an energy equal to 931 Mev. 1 AMU =931 Mev is used as a standard CONVERSION |
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| 14. |
Soni says that the acceleration in an object could be zero even when several forces are acting on it do you agree with her why |
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Answer» The acceleration of an object can be zero even if several forces are ACTING on it PROVIDED the resultant force (F) is zero. As F = 0, ma = 0 and ACCORDINGLY a = 0 (as m ≠ 0). |
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| 15. |
Atruck moves 5 m in 2 seconds,10m in 1 second and 25 m in 5 seconds.what is the average speed speed of the truck? |
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Answer» Average SPEED = TOTAL distance / total time = 5+10+25/2+1+5 = 40/8 = 5 Average speed is 5 m/s |
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| 16. |
The errors which tend to occur in one direction, positive or negative, are called |
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Answer» Answer: The systematic ERRORS are those errors that tend to be in ONE direction, either positive or negative. Basically, these are the errors whose causes are known. (a) INSTRUMENTAL errors: These errors arise from the errors due to imperfect design or calibration of the measuring instrument, zero error in the instrument, etc. Explanation: PLZ MARK AS BRAINLIST ANSWER |
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| 17. |
A Uniform meler vruler balances haskizontally onaknife edge placed al 62com mark when a weight ofHoof is Os luspended al adëstance of 8em from one1. Draw a diagram of the arrangementf. What is the weight of the suddene1 |
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Answer» (ii) The center of gravity of a uniform half meter RULE is 25 cm. The rule balances HORIZONTALLY on a knife edge at 29 cm mark when a weight of 20 kgf is suspended from one end. The difference in the center of gravity and the point of balance=29−25=4cm(Y) The weight is suspended at one of the EXTREMES, Let us assume at the 50 cm end. Therefore, the distance from the point of knife edge to the weight =50−29=21cm(X) Weight of meter rule = Y X
× Suspended weight ∴ Weight of meter rule = 4 21
×20=105 kgf solution |
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| 18. |
1.Three copper wires have their lengths in the ratio5:3:1 and their masses are in the ratio 1:35. Their electrical resistance will be in the ratiopls with explanation |
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Answer» I PROMISE I WILL FOLLOW YOU IF YOU MARK AS BRAINLIST THANKS FOR QUESTION
YOUR ANSWER IS Resistance of a WIRE is given as A ρL
This is the same as A×L ρL
= V ρL 2
So, resistance is proportional to M L 2
The RATIO of resistances is, 1 25
: 3 9
: 5 1
=125:15:1 |
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| 19. |
If 300 is the workdone of charge 3C to move from -10V to V then what is V |
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| 20. |
how does the metallic character of elements vary on moving from. (1) left to right in a period, (2) from top to bottom in a group of the modern periodic table give reason for your answer |
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Answer» (1) left to RIGHT metallic character decrease because of effective NUCLEAR charge on electron. (2) top to bottom INCREASES because of no. of shells and LOW force of attraction between electron and nucleus. hope this will help you and marks it as brainlist plzzzzzzzzz also follow me |
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| 21. |
A water jet fired at an angle 60°vertical hits the groundground 3.0 km away . By adjustingangle of projection, how far canone expect it to be used forextinguishingfire |
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Answer» hiiiiiiii Explanation: OKAY okay okay okay okay okay okay okay okay okay okay okay okay okay okay okay okay okay |
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| 22. |
Explain uniform circular motion with proper diagrams |
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Answer» Uniform circular motion can be described as the motion of an OBJECT in a circle at a CONSTANT speed. As an object moves in a circle, it is constantly changing its direction. ... The direction of the ACCELERATION is INWARDS. The animation at the right depicts this by means of a vector arrow. |
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| 23. |
What do you mean by mass defect |
Answer» ANSWER:Mass DEFECT is the DIFFERENCE between the mass of an ISOTOPE and its mass number, representing binding energy. Hope this helps ! |
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| 24. |
Draw a diagram to show +z axis and -z axis |
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| 25. |
One of the follwing option which can be used to produce a propagation electromagnetic wave |
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| 26. |
The velocity-time graph for motion of two bodies A and B is as shown. Read the graph carefully and answer the following questions:Which of the two bodies has a higher velocity at time t = 2s (b) t= 4s?Which of the two bodies has (a) constant velocity (b) increasing velocity? At what time is the velocity of the two bodies same?What is the velocity of A and B at time t=1s? What is the change in the velocity of body B over a 2 second interval ? please answer with explanation and with formulas please please please |
Answer» YAR TU MUJRE BRAINLIST BNADE MA TUJE FOLLOW KAR RAHA HUThe velocity-time graph for motion of two BODIES A and B is as shown. READ the graph carefully and answer the following questions: Which of the two bodies has a higher velocity at time t = 2s (b) t= 4s? Which of the two bodies has (a) constant velocity (b) increasing velocity? At what time is the velocity of the two bodies same? What is the velocity of A and B at time t=1s? What is the change in the velocity of body B over a 2 second INTERVAL ? please answer with explanation and with FORMULAS please please please |
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| 27. |
in which of the following a force f is acting on an object mass m the direction of displacement is from west to east zone by the longer Arrow observer the diagram carefully and state whether the work done by a force is negative or zero |
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Answer» potential ENERY.. PLZ Mark as BRAINLIST |
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| 28. |
In the alumino therimic process,the role of aluminium is |
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Answer» Answer: aluminum acts as a reducing agent when reacted with iron (II) oxide which after reaction REDUCES to molten iron.. and aluminum GETS oxidised to aluminum oxide.. this molten iron is APPLIED between the tracks of railways to weld them... I HOPE it helps you Mark me as brainliest and please follow me |
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| 29. |
4. (a) Give a simple example to prove that soundis kind of energy. |
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Answer» Answer: Sound is a type of wave Explanation: and therefore transports ENERGY as any other wave. For example, sound can CAUSE objects to vibrate, which is evidence that sound is a form of energy. In EXTREME cases, sound waves can even BREAK objects... I hope this will HELPS you pls mark me as brainliest.... |
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| 30. |
Km*2= km x km = ...m x..... m =..... m*2प्लीज गिव मी आंसर फास्ट |
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Answer» km² = KM X km = 100M x 100m = 10000m² Mark me as BRAINLIEST |
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| 31. |
Hi guys ⟵(๑¯◡¯๑) answer this please: What is the relation between and ? |
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Answer» bro......are you Tamil???? |
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| 32. |
You place a small sphere with a net charge of 5 space x space 10 to the power of negative 6 end exponent space C at one corner of a square that measures 5 m on each side. What is the magnitude of the electric field at the opposite corner of the square?900 N/C9,000 N/C450 N/C4,500 N/C |
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Answer» 450n/c Explanation: it is the CORRECT answer |
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| 33. |
Why we are not in motion in the car? |
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Answer» Answer: WE ARE IN MOTION WITH THE CAR BUT AS WE R INSIDE THE CAR WE ARE IN REST .....THATS WHY WE DONT FEEL IT JUST LIKE WE ARE NOT FEELING THAT THE EARTH IS MOVING....... |
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| 34. |
Motion involving complete displacement of object |
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Answer» yes , through MOTION only anyone can DISPLACE any object HOPE YOU LIKE IT MARK THIS ANSWER AS BRAINLIEST AND FOLLOW ME |
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| 35. |
12. Calculate the number of particles in each of the following (AS)a) 46g of Nab) 8g of oc) 0.1 mole of hydrogen |
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Answer» jaiye anish |
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| 37. |
A 9Ω resistance is cut into three equal parts and connected in parallel. Find the equivalentresistance of the combination. |
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Answer» A RESISTANCE is CUT into 3 EQUAL |
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| 38. |
Assertion :A car can run on road because of force applied by the road on the car Reason :Friction provides the necessary force for translators motion for a car starting from rest a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. b) both A and R Are true and R is not the corret explanation of A c) A is true, R is false d) A is false , R is true |
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Answer» I THINK the answer is A hope it helps please MARK me as the BRAINLIEST if the answer is CORRECT. |
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| 39. |
What is not true of unbalanced forces? * |
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Answer» Answer: not true of UNBALANCED FORCES... |
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| 40. |
The velocity-time graph for motion of two bodies A and B is as shown. Read the graph carefully and answer the following questions:Which of the two bodies has a higher velocity at time t = 2s (b) t= 4s? Which of the two bodies has (a) constant velocity (b) increasing velocity? At what time is the velocity of the two bodies same?What is the velocity of A and B at time t=1s? What is the change in the velocity of body B over a 2 second interval ? |
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Answer» Answer: let us take the body moving with UNIFORM velocity as A and the other moving with uniform acceleration B(having inclined slope). 1. a) at t = 2s body A has higher velocity b) at t = 4s body B has higher velocity. 2. a) body A has constant velocity . b) body B has INCREASING velocity. 3. at t = 3s the velocity of the TWO bodies is same . 4. at t = 1s velocity of body A is 30m/s and body B is 10m/s. 5. at FIRST time interval (that is at t = 2s) the velocity is 20m/s. And at second time interval (that is at t = 4s) the velocity is 40m/s. change in velocity = velocity at second interval - velocity at first interval = (40-20)m/s = 20m/s |
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| 41. |
a body is dropped from height h. if it travels a distance h/3 during the last second of its fall then the time travel(in seconds) is |
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Answer» Explanation: A BODY is DROPPED from a height h.If it TRAVELS a distance h÷3 during the LAST SECOND of its fall then the time of travel(in seconds) is |
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| 42. |
Graph of uniform aceelartion |
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Answer» here is your graph. Explanation: |
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| 43. |
Mention the types of motions for the Motion of a swing |
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Answer» The Four Basic TYPES Of Motion Rotary Motion. Rotary motion is anything that MOVES in a circle. ... Oscillating Motion. Something that oscillates moves back and forth. ... Linear Motion. SIMPLE enough, linear motion is anything that moves in a straight LINE, like our linear actuators. ... One More Type. Explanation: hope it helps you...!!!... |
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| 44. |
What are Alpha Beta and Gamma Ray's? |
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Answer» Answer: Alpha radiation is the NAME for the emission of an alpha PARTICLE in fact an helium NUCLEI, beta radiation is the emission of ELECTRONS or positrons , and gamma radiation is the TERM used for the emission of energetic photons. |
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| 45. |
The second?12. What is a second's pendulum? What is its frequency? What is its length at a place where g = 9.87 m -27 Take 2 = 9(Ans. |
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| 46. |
Which of the following graph shows an object moving with negative acceleration |
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Answer» Answer: option 3 ................ If the object is slowing down then its acceleration VECTOR is directed in the OPPOSITE direction as its MOTION (in this CASE, a positive acceleration). The position-time graph shows that the slope is CHANGING (meaning a changing velocity) and negative (meaning a negative velocity). |
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| 47. |
If 1 hectare=10*4 m*2 Then, 10*5 hectare =......m*2 |
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Answer»
So |
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| 48. |
A cyclist travels a distance 50km in 5h. Find the speed of cyclist. |
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| 49. |
Mention the Propties of solid |
Answer» ➠ AnSwer :-➝ 5 properties of SOLID :-→ A solid has a definite shape and volume. → SOLIDS in general have HIGHER density. → In solids, intermolecular forces are strong. → Diffusion of a solid into another solid is EXTREMELY slow. → Solids have high melting points. |
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| 50. |
A pencil held obliquely in water appears bent and longer. true or false |
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Answer» The answer will be TRUE |
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