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. |
What is centre of gravity? |
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Answer» a point from which the weight of a BODY or system may be CONSIDERED to ACT. In uniform gravity it is the same as the centre of mass. |
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| 2. |
A circuit consists of a battery and two 22-Ω resistors in series. The current through the circuit is 0.55 A. A third resistor is then added to the circuit in parallel with the first two resistors. The current through the new branch of the circuit is 0.35 A. What is the resistance of the third resistor? |
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Answer» C=E/RIn the 1st case 0.55=E/44E=0.55×44Let R be the 3rd resistance. This r is in parallel to 44. Then effective resistance R in second case is=1/(1/44+1/r) =44r/(44+r)0.35=0.55×44/{44r/(44+r)}0.35r=0.55r+44×0.55- 0.20r=44×0.55r =44×0.55/0.20= -121you are getting negative SIGN because after adding 3rd resistance in parallel, the effective resistance will decrease and the current will increase and become more than o.55. If the 3rd resistance is put in SERIES with 44 ohm then current will be LESS than 0.55 |
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| 3. |
When angle of devication becomes 240 |
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Answer» When ANGLE of DEVIATION becomes more than 90 degree, it is total internal REFLECTION. |
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| 4. |
A body is thrown up with a velocity 40ms^(-1). At same time another body is dropped from a height 40 m. Their relative acceleration after 1.3 seconds is |
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Answer» """""""please mark me as BRAINLIEST please"""""""Explanation:A Ltd issued 10,000 shares @Rs.10 each at a premium of Rs.2 per share payable On Application Rs.2 on application, Rs.5 on allotment (including premium), On first CALL Rs.3 and the balance on FINAL call. Applications received for 30,000 shares and the COMPANY made allotment on prorata basis to the applicants for 12,000 shares.Ram the holder of 900 shares failed to pay the allotment money and on his subsequent failure to pay the first call his shares are forfeited. Krishna the holder of 500 shares failed to pay the first call and final call. His shares are forfeited after the final call. 1,000 shares are reissued @Rs.9 per share, the whole of Krishna's shares are INCLUDED. Show journal entries |
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| 5. |
using gases therom obtain in expression for the electric field strength of a point due to plane sheets of charge |
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Answer» okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk |
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| 6. |
Find the potential at midpoint of two equal charges 2μC separated at 10 cm in air |
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Answer» Touch and hold a clip to pin it. Unpinned CLIPS will be deleted after 1 hour.Explanation:Welcome to Gboard CLIPBOARD, any text you COPY will be SAVED here.Welcome to Gboard clipboard, any text you copy will be saved here.Welcome to Gboard clipboard, any text you copy will be saved here.Welcome to Gboard clipboard, any text you copy will be saved here. |
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| 7. |
Calculate the resistance of peace of wire o.50m long diameter 2. 74 × 10^-4 m. Specific resistence of the wire is 1.66* 10^_8 am. Also calculate it's conductance. |
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Answer» Conductance = 7 mhoExplanation:length of wire l =0.5 mdiameter d = 2.74 X 10⁻⁴ m∴radius R = 1.37 x 10⁻⁴ mSpecific RESISTANCE ρ = 1.66 x 10⁻⁸ Ω mC/S Area of wire A = πr²= 3.14 x (1.37 x 10⁻⁴)²Conductance = 1/R = A/ρl = 3.14 x (1.37 x 10⁻⁴)²/1.66 x 10⁻⁸ x0.5 = 7.1 mho |
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| 8. |
a man standing between two cliffs fires a shot and hills tour course after 2 seconds and 2.5 seconds respectively calculate distance between the two cliffs, speed of sound is 344 m/s |
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Answer» please MARK me as BRAINLIEST pleaseExplanation:A LTD issued 10,000 shares @Rs.10 each at a premium of Rs.2 per share payable On Application Rs.2 on application, Rs.5 on allotment (including premium), On first call Rs.3 and the balance on final call. Applications RECEIVED for 30,000 shares and the Company made allotment on prorata basis to the applicants for 12,000 shares.Ram the holder of 900 shares failed to pay the allotment money and on his subsequent failure to pay the first call his shares are forfeited. Krishna the holder of 500 shares failed to pay the first call and final call. His shares are forfeited after the final call. 1,000 shares are reissued @Rs.9 per share, the whole of Krishna's shares are included. Show journal entries |
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| 9. |
7. Observe the circuit diagram and find the answer for the following questions. a) How is the heater A and the heater B connected in the circuit? |
| Answer» TION:I Don't KNOW ❗❗❗❗❗❗❗❗❗❗❗ | |
| 10. |
Arrange three charges +q, +q, and –q using distances r, 2r and 2r to get a system with zero potential energy. |
| Answer» HOPE it help you Explanation:plese GIVE THANKS | |
| 11. |
Increase in size of a substance due to heating. f liquid water into gas form. |
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Answer» Answer: When a substance is heated, its molecular MOVEMENT increases. Due to this, the average distance between the molecules also increases, thereby increasing the VOLUME of the substance, i.e., EXPANDING the substance. ... Molecules of gases have no bonding at all; therefore, gases expand the most among the THREE. |
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| 12. |
2.If a body moves 6m East then 5m North then 4m South, what is the total distance covered by the body and the displacement of the body? by figure |
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Answer» It is the correct explanationExplanation:Consider, EAST direction to be x-direction, north direction to be y-direction and vertically upward direction to be z-direction.Displacement of the particle is given by S =8 i^ +6 j^ +10 k^ MAGNITUDE of displacement ∣ S ∣= 6 2 +8 2 +10 2 =10 2M |
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| 13. |
Explain properties of electric field lines |
| Answer» IES of an Electric FieldField lines never INTERSECT each other. They are PERPENDICULAR to the SURFACE charge. The FIELD is strong when the lines are close together, and it is weak when the field lines move apart from each other. The number of field lines is directly proportional to the magnitude of the charge. | |
| 14. |
2.If a body moves 6m East then 5m North then 4m South, what is the total distance covered by the body and the displacement of the body? |
| Answer» TOTAL DISTANCE COVERED by the BODY is 11M | |
| 15. |
4. If a green ball is denser than a white ball of the same size, the green ball has a. less volume. b. more volume. c. more matter taking up the same space. d. less matter taking up the same space. |
| Answer» C is the CORRECT ANSWER. | |
| 18. |
Draw scale evctor diagram |
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Answer» tion:SCALE. VECTOR diagrams utilize a scale to help represent the magnitude. A scale indicates the ratio of the DISTANCE on a map to the actual distance ALONG the ground. |
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| 19. |
Liquid propane enters a combustion chamber at 25ºC at a rate of 0.05 kg/min where it is mixed and burned with 50 percent excess air that enters the combustion chamber at 7ºC. An analysis of the combustion gases reveals that all the hydrogen in the fuel burns to H2O but only 90 percent of carbon burns to CO2, with the remaining 10 percent forming CO. If the exit temperature of the combustion gases is 1500 K, determine : i) The mass flow rate of the air ii) The rate of heat transfer from the combustion chamber |
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Answer» propane enters a combustion chamber at 25ºC at a rate of 0.05 kg/min where it is MIXED and burned with 50 percent excess air that enters the combustion chamber at 7ºC. An analysis of the combustion gases reveals that all the hydrogen in the fuel burns to H2O but only 90 percent of carbon burns to CO2, with the remaining 10 percent FORMING CO. If the exit temperature of the combustion gases is 1500 K, determine : i) The MASS flow rate of the air ii) The rate of heat transfer from the combustion chamber |
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| 20. |
+19 and +9 C. - 19 and 79 +29 ar +29 the capacitance of any The equivalent capacitance of series combination of capacitors is individual capacitance in the combination. A. Sum of B. Greater than C. Less than Equal to How long does it take a current of 10mA to deliver 30C charge? A 3000s B. 3s C. 30s D. 300s Kilowatt hour is unit of: A. Resistance B. Energy C.Power D. Current |
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Answer» tion:+19 and +9 C. - 19 and 79 +29 ar +29 the CAPACITANCE of any The equivalent capacitance of series combination of capacitors is individual capacitance in the combination. A. Sum of B. GREATER than C. Less than Equal to How long does it take a current of 10mA to deliver 30C CHARGE? A 3000s B. 3s C. 30s D. 300s Kilowatt hour is unit of: A. Resistance B. Energy C.Power D. Current |
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| 21. |
Please solve this, do not spam |
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Answer» wwe6tygwuggwugufvggioifyasijigewcffExplanation:FF |
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| 22. |
What is electrostatic shelding |
| Answer» ELECTROSTATIC shielding is the phenomenon that is OBSERVED when a FARADAY cage operates to block the effects of an electric FIELD. Such a cage can block the effects of an external field on its internal contents, or the effects of an internal field on the outside ENVIRONMENT. | |
| 23. |
Two blocks have a mass M and 3M are placed on a horizontal frictionless surface.A light spring is attached to one of them and the block are pushed together with the spring between them A cord initially holding the blocks together is burned after this the block of 3M moves to the right with a speed of 2m/s. What is the speed of block M |
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| 24. |
1) A wooden cylinder of length 21 cm has a diameter of 8 cm. what is the volume of the cylinder? |
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Answer» Given, height of the CYLINDRICAL groove h = 21 cm Diameter of the LEAD = 3 cm So, RADIUS of the lead = 3/2 = 1.5 cm Now, volume of the lead = πr2 h = (22/7) * (1.5)2 * 21 = 22 * 1.5 * 1.5 * 3 = 148.50 cm3 So, the volume of lead = volume of groove = 148.50 Again, given that groove is filled with lead. Now, outer diameter of the WOODEN CYLINDER = 12 cm So, outer radius of the wooden cylinder = 12/2 = 6 cm and height h = 21 cm Now, volume of wooden cylinder = πr2 h = (22/7) * 62 * 21 = 22 * 36 * 3 = 2376 cm3 Now, volume of wood = volume of wooden cylinder without groove - volume of groove = 2376 - 148.50 = 227.5 cm3 PLZ MARK ME AS BRAINIEST |
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| 25. |
A bus decreases its speed from 100km/h to 80km/hr in 5s.Find the acceleration of the bus. |
| Answer» PLS MARK ME HAS BRAINLIST | |
| 26. |
Explain the property of quantization of charge |
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Answer» Quantization of charge means that when we say SOMETHING has a given charge, we mean that that is how many TIMES the charge of a single ELECTRON it has. Because all charges are associated with a whole electron, this is possible. ... So electrons have a a NEGATIVE charge, negative charge. |
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| 27. |
In question number 9 the average velocity of the object between t=2s t=4s is explanation pls... |
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| 28. |
3. Anything that can be properly measured is called ____ |
| Answer» G that can be PROPERLY MEASURED is CALLED MEASUREMENT | |
| 29. |
Which heater produces more heat in 10 minutes? |
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Answer» For example, an 800-watt heater would DELIVER 2,730 BTUs and a 1,500-watt space heater would produce ROUGHLY 5,120 BTUs of heat. The higher a heater's BTU rating, the better its HEATING performance. The HIGHEST BTU space heater tops out at 5,120 BTUs, as the highest wattage space heater is only 1,500-watts. |
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| 30. |
The equivalent capacitance of series combination of capacitors is _______ the capacitance of any individual capacitance in the combination. |
| Answer» 2C will be the ANSWER I THINK.. | |
| 31. |
Explain constraints , |
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Answer» A constraint is a rule that is used for optimization purposes. There are FIVE TYPES of constraints: A NOT NULL constraint is a rule that prevents null values from being entered into one or more columns WITHIN a table. ... You can use a primary key and FOREIGN key constraints to define relationships between tables.Explanation:brainlist? |
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| 32. |
1) A wooden cylinder of length 21 cm has a diameter of 8 lom. what is the volume of the cylinder? |
| Answer» AMS is 168 because 21×8 is 168 | |
| 33. |
If a stone dropped from a tower what happens to its speed. |
| Answer» TION:सुकून की तलाश में हम दिल बेचने निकले थे खरीददार दर्द भी दे गया और दिल भी ले गगयाsobrr | |
| 34. |
Weight is the measure of the force of an obeject |
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Answer» no WEIGHT of a BODY is the force by which the earth PULLS it TOWARDS its CENTRE. |
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| 35. |
Aheating coil of 1000ohm resistance work in 250v supply a) what is the current flowing in it b) what is the power of heater |
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Answer» a) CURRENT(i) = V/R= 250/ 1000 A= 1/4 A= 0.25Ab) POWER= V*V/R= 250*250/1000 WATT= 62.5 watt |
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| 36. |
If initial velocity of a particle is 2 m per second and it travels 10 m in 1 second then what will be it's acceleration |
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| 37. |
What is hybernation? |
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Answer» Hibernation is a way animals conserve ENERGY to survive adverse weather conditions or lack of food. It involves PHYSIOLOGICAL changes such as a drop in body TEMPERATURE and slowed metabolism. Research into the processes involved in hibernation COULD result in medical benefits for peopExplanation:mark me BRAINLIEST |
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| 38. |
Explain the property of quantiration of charge |
| Answer» TION:Quantization of charge means that when we SAY SOMETHING has a given charge, we mean that that is how many times the charge of a single electron it has. Because all CHARGES are associated with a whole electron, this is POSSIBLE. ... So electrons have a a negative charge, negative charge. | |
| 39. |
What is Newton's first law of motion ? give some procedures to prove it |
| Answer» NEWTONS first law of motion is" INERTIA"1)INERTIA OF REST EX:When the bus move forward suddenly.2)INERTIA OF MOTION EX:When the bus stops suddenly.3)INERTIA OF DIRECTION EX: Cricket batsman when hits a BALL to change its DIRECTON. | |
| 40. |
A bullet fired from a rifle attains maximum height of 25 m and crosses a range of 200m. Find the angle of projection. Plz friends give me correct answer |
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Answer» -Required to find ;-θ = ?PROCEDURE ;-Let us recall the MAXIMUM height achieved by projectile as FOLLOWS :Let us plug in all that we know. --------- 1Now let us recall the range achieved by projectile as follows :Let us now plug in all that we know. ---------- 2 Now let us divide 2 by 1 . ∴Angle of projection is . |
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| 41. |
Henceforth, I ask for no good fortune – I myself am good fortune – |
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| 42. |
What conventions are used in Sl to indicate units? |
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Answer» The symbols of the UNITS named after scientist should be written by a CAPITAL LETTER. For example : N for newton, H for henry, W for watt. SMALL LETTERS are used as symbols for units not derived from a proper name. For example : m for metre, kg for kilogram.Explanation:Thank you. PLEASE MARK ME BRAINLIEST |
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| 44. |
What is force how it works |
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Answer» is a push or PULL upon an OBJECT RESULTING from the object's interaction with another object. WHENEVER there is an interaction between two objects, there is a FORCE upon each of the objects. When the interaction ceases, the two objects no longer experience the force. |
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| 45. |
Why sulphur cannot be used for making pipes |
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Answer» Because For MAKING PIPES we have to use a elements like luster which is EASILY movable. So we not use the sulphur for making pipes. |
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| 46. |
Calculate einstein Temperature if Einstein frequency is 3*10^12Hz |
| Answer» HIIII I THINK it's HELPFUL | |
| 47. |
Physics class 10 work energy and power chapter |
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Answer» energy can NEITHER be created nor be destroyedit can only be CHANGED from one FORM to ANOTHER |
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| 49. |
Write in colums and find the difference 721-562 |
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Answer» 159Explanation: 721-562____159____ |
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