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. |
the figure shown of capacitance c1 and c2 of 2 microfarad connected to a battery of 5V.Initially switch S is closed and after sometime the S is left open and a dielectric slab of dielectric constant of K=5 is inserted to fill completely the space between the plates of the two capacitors.what is the charge and potential difference of the plates after the slab is inserted? |
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| 2. |
Three different between travelling and standing wave |
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Answer» Explanation: Travelling WAVES TRANSPORT energy from ONE area of space to another, whereas standing waves do not transport energy. ... Travelling waves can have any frequency, and can undergo interference just like standing waves. A travelling wave could be set up by a bomb exploding in the open AIR. |
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| 3. |
Deference of two wittuo uut vectorsSaltounit vector, then their dot ProductsX/2. What is the value of x? |
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Answer» Answer: CROSS Product – Let we have given two VECTOR A = a1 * i + a2 * j + a3 * k and B = b1 * i + B2 * j + b3 * k. Then cross product is calculated as cross product = (a2 * b3 – a3 * b2) * i + (a3 * b1 – a1 * b3) * j + (a1 * b2 – a2 * b1) * k, where [(a2 * b3 – a3 * b2), (a3 * b1 – a1 * b3), (a1 * b2 – a2 * b1)] are the coefficient of UNIT vector ALONG i, j and k directions. |
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| 4. |
What is the force between two small charge spheres having charger 13×10 power -7c and 10×10 power -7c placed 30cm in air |
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Answer» Answer: 0.13N Explanation: F=q1q2÷r^2 =13×10^-7×10^-6×9×10^9÷(0.3)^2 =0.13N |
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| 5. |
Veins and arteries carry blood in the circulatory system. Which of these carry blood(I) away from the heart ?(II) back to the heart ? |
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Answer» ARTERIES- AWAY from the heart Veins- to the heart Please MARK my ANSWER as the BRAINLIEST!! |
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| 6. |
At-v=u is it true. solve it step by step |
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Answer» its FALSE..... a= v-u/t at = v-u u= v-at |
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| 7. |
If difference of two unit vectorsis alsoa unit vector then their dot Product isX / What is the value of x? |
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Answer» ANSWER:PLS MARK me as the BRAINLIEST then I will answer Explanation: |
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| 8. |
Define Acc",speed,motion,displacement |
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| 9. |
Water cannot be used in barometer |
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Answer» Answer: water cannot be used as BAROMETRIC LIQUID because it's density is lower than Mercury . water's density is 1000 gram per cubic meter. HENCE it requires a barometer whose height is around 11 meters so instead of water mercury is used in barometer if this answer is CORRECT then mark this answer as brainlist dear buddy |
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| 10. |
Calculate the potential of left to right capacitor of circuits given in diagram |
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| 11. |
ਤਾਕਤ ਸਹਿਣਸ਼ੀਲਤਾ ਤੋ ਕੀ ਭਾਵ ਹੈ |
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Answer» ਬਰਦਾਸ਼ਤ ਕਰਨਾ HOPE it helps you.. |
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| 12. |
Guys....Anyone who passed 12th, can you give me tips to study Physics for 12th Board Exams (CBSE)?? Please do give me study ideas and tips |
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Answer» Understand the CONCEPT from the CHAPTER and MAKE SUB topics and main topics so you can easily frame the appropriate answers in the exam. |
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| 13. |
ਇੰਝਣ ਯੋਗਤਾ ਕੀ ਭਾਵ ਹੈ |
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Answer» I can't UNDERSTAND the QUESTION |
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| 14. |
An object of mass 1 Kg is moving with constant velocity of 2m/s on a frictionless table. The force required to keep the object moving with same velocity is |
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Answer» Answer: 2 N Explanation: velocity = 2m/s force = 1Kg× 2m/s = 2 N
i hope this is the answer. if not , |
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| 15. |
The potential energy of a projectile at maximum height is 3/4 times kinetic energy of projection. Its angle of projection is1) 30°2) 45°3) 60° 4) none |
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Answer» Potential energy at the highest POINT = mgh Kinetic energy at the highest point = 1/2 mv² Now, as per question..... P.E. = (3/4) K.E. mgh = (3/4) mv²/2 [HEIGHT of PROJECTILE = v²sin²Ø/2g] g(v²sin²Ø)/2g = (3/8)v² sin²Ø/2 = 3/8 sin²Ø = 3/4 sinØ = √3/2 sinØ = sin 60° Ø = 60° Henceforth, The angle of Projection of particle = Ø = 60° |
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| 16. |
13. A physical quantity is represented by X = [MaLbT-).If percentage error in the measurement of M, L and Tare a%, 3% and y% respectively, then maximumpercentage error in measurement of X should be(Given that a, B and y are very small)(1) (aa - Bb + yc)% (2) (aa + 3b + yc)%(3) (aa - Bb - yc)% (4) (aa + Bb - yc)% |
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Answer» Answer: if percentage error in the measurement of M, L and T are a%, 3% and y% respectively, then maximum percentage error in measurement of X should be (GIVEN that a, B and y are very SMALL) (1) (aa - Bb + YC)% (2) (aa + 3b + yc)% (3) (aa - Bb - yc)% (4) (aa + Bb - yc)% |
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| 17. |
Wire has a resistance of 9.7Ω at 20°c and 12.1Ω at 270°c. Find the temperature coefficient of its material. |
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Answer» The answer is GIVEN below. PLEASE MARK BRAINLIEST. |
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| 18. |
Of massA bodyinclinedm is placed on a frictionsCas shown in the sketch)planeThe componentdirection parallel to the inclined Planeof thethe block's weightisgivenby |
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Answer» if any GIRL interested to TALK me then inbox me may ur PARENTS live long yrs plz Mark me as BRAINLIEST................... |
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| 19. |
What measures do we use to compare the hotness or coldness of a body? |
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Answer» Answer: The QUANTITY is Temperature Its COMMONLY used UNITS are celcius,FARENHITE,kelvin Explanation: |
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| 20. |
Find a vector of magnitude 18 which is perpendicular to both the vectors 4i-j+3k and -2i+j-2k |
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Answer» HOPE you UNDERSTAND it...... |
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| 21. |
The focus-length of the actor of an astronomical instrument is 20 mm. When the final reflection is formed infinitely during normal adjustment The difference between the two lenses is 500 mm. In this case the magnification of the instrument |
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Answer» MARK ME AS BRAINLIEST THEN I WILL ANSWER Explanation: |
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| 22. |
रजिस्टेंस का डायमेंशन फार्मूला कैसे निकाला |
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| 23. |
A body of massis placed on a frictionlessCas shown in the sketch)inclinedplaneblock's weightThe componentthedirection parallel to the inclined planegiven |
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Answer» Answer: BREAKOUT the gravity force VECTOR into components which are parallel -MG*SIN(Θ) and perpendicular -mg*cos(Θ) to the incline. The normal force will be equal and OPPOSITE to the perpendicular gravity component so N = +mg*cos(Θ). |
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| 24. |
2. Calculate the diameter of the marble if the main scale reading is 1.2 cm, thhe vernier coincidence is 6 and the negative zero error is 0.05 cm |
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Answer» ' ' |
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| 25. |
The main scale reading while measuring the diameter of a ball is 4.3 cm and the Vernier coincidence is 7.Find the radius of the ball. |
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Answer» Explanation: |
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| 26. |
The 13th question guys! Dont spam!! and pls give the full answer! urgentttt!! |
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| 27. |
1.ਸਰਕਟ ਵਿਧੀ ਵਿੱਚ ਕਿੰਨੇ ਸਟੇਸ਼ਨ ਰੱਖੇ ਜਾ ਸਕਦੇ ਹਨ ? |
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Answer» ਸਰਕਟ ਵਿਧੀ ਵਿੱਚ ਕਿੰਨੇ ਸਟੇਸ਼ਨ ਰੱਖੇ ਜਾ ਸਕਦੇ ਹਨ || |
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| 28. |
Is uniformly accelerated motion uniform motion? Give one example each of uniform and non- uniform motion... Pls tell fast as I've to complete my homework |
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Answer» Answer: yes it is. example of uniform MOTION a train moving with CONSTANT SPEED and TIME. example of non uniform motion a train moving with different speed in unequal intervals of time |
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| 29. |
Pleawe solve in science 1 , balanced equation 2 incorrect since it is not balanced 3 incorrect since magnesium does not react with chlorine. |
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Answer» Answer: 2MgO+HCl=MgCl2+H2O.. MARK as the BRAINLIEST |
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| 30. |
• When9movesplayer hits a football, italongcurued bath and thenfalls to the ground. What is the workforcew of gravityplenatheon thefost ball |
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| 31. |
An iron nail sinks in water but a ship made up of the same material float on it |
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Answer» The density of nail (as of iron) is much LARGER than the WATER. So it sinks easily. The weight of the water displaced by the ship is EQUAL to its weight, so it floats. Whereas the weight of the water displaced by the iron nail is less than its weight so the iron nail sinks. Explanation: PLZ MARK ME AS BRAINLIEST |
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| 32. |
The 13th question guys! Dont spam!! and pls give the full answer |
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| 33. |
Name any two disease caused by microorganism in plants and animals |
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Answer» hello Explanation: ANSWERS ARE IN PLANTS=Citrus Canker.ANDStewart's WILT of Corn. IN ANIMALS=anthrax, blackquarter |
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| 34. |
9 An object is flaced in front of a concave mirrorof focal length 20 cm. The image formed isthere times the size of the objectCalculatetwo possible distances of abject from mirror? |
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Answer» Answer: 15 Explanation: FOCAL length =object DISTANCE -image distance. given here is the image size is 3 times than object size the object distance is 5 image distance is 15 |
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| 35. |
Does hazmat suit protect you from radiant heat from fire |
Answer» YES |
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| 36. |
A brick is 30 cm long, 10 cm wide, and 10 cm thick. It weighs 24N and is lying on the ground. Find the pressure exerted by the brick on the ground. Plz tell fast. I have my exam after some time |
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| 37. |
On addition of soluble impurity in liquid surface tension ......... |
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Answer» increase |
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| 38. |
If resistors resists/reduces the flow of current then why we take same current in series combination of resistors? |
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| 39. |
Draw and label the household circuit diagram. Tabulate all the components ( only name in order) . Why fuse is used is an electrical circuit. |
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Answer» Explanation: .The FUSE is used in electric circuits so that when excessive AMOUNTS of electric current flows it will melt and break the circuit |
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| 40. |
What is the nature of acceleration associated with a mass whose v-t graph is shown |
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Answer» hi Explanation: hsjdbdndkdbdjsndn |
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| 41. |
Dielectric constant or relative permitivity |
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Answer» Answer: |
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| 42. |
Wht does the path of an object look like when it is in uniform motion |
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Answer» The path of an OBJECT looks like a straight ROAD with no obstruction. It's distance-time GRAPH is always straight. |
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| 43. |
What do you mean by capacitance |
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| 45. |
What aremagnetic poles? How are they designated ? |
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Answer» Answer: Either of the two ends of a magnet at which the field of the magnet is most INTENSE. Each pole is designated by the approximate geographic direction in which it points, either north or south. Magnetic pole, REGION at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in Earth's magnetic field orients itself in a north–south direction. ... Unlike poles of different magnets attract each other; like poles repel each other. Hope it helps you Mate ✌ ✌ |
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| 46. |
What does the brush do in the DC Motor? |
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Answer» Answer:
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| 47. |
Why the government not banning plastic |
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Answer» Answer: if the government banned the plastic then it will have very negative effects also. it is because MANY of the objects and elements are produced by the plastics in our COUNTRY. a plastic is been banned by the government then they can't be produced. as well as plastic is non biodegradable. so it can't be finished from the Earth. but it can be reused as recycled. Explanation: HOPE hope it HELPS you!! |
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| 48. |
Write an activity To find the direction of velocity and speed remains constant |
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Answer» OBJECTS MOVING in UNIFORM circular motion have a constant (uniform) SPEED and a CHANGING velocity. |
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| 49. |
The reaction of Barium chloride with Aluminium sulphate solution is anexample for which type of chemical reaction ? Why ? Write the balancedchemical equation for this reaction. |
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Answer» Answer: It is an double displacement reaction. Because they mutually change their IONS. The chemical equation is 3BaCl2(aq)+Al2(SO4)3(aq)→3BaSO4(s)+2AlCl3(aq) Barium Sulfate ( BaSO4 ) being highly INSOLUBLE, will form a white precipitate. |
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| 50. |
विधुत क्षेत्र का मात्रक है (अ) न्यूटन/कूलोम (ब) कूलोम/न्यूटन (स) जूल/कूलोम (द) कूलोम/जूल ! |
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Answer» answer is अ Explanation: F=qE |
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