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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. |
विधुत मोटर का कायं विधि स्पस्ट करे |
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Answer» विद्युत मोटर (ELECTRIC MOTOR) एक विद्युतयांत्रिक मशीन है जो विद्युत ऊर्जा को यांत्रिक ऊर्जा में बदलती है; अर्थात इसे उपयुक्त विद्युत स्रोत से जोड़ने पर यह घूमने लगती है जिससे इससे जुड़ी मशीन या यन्त्र भी घूमने लगती है। अर्थात यह विद्युत जनित्र का उल्टा काम करती है जो यांत्रिक ऊर्जा लेकर विद्युत उर्जा पैदा करता है। कुछ मोटरें अलग-अलग परिस्थितियों में मोटर या जनरेटर (जनित्र) दोनो की तरह भी काम करती हैं। विद्युत् मोटर विद्युत् ऊर्जा को यांत्रिक ऊर्जा में परिणत करने के साधन हैं। विद्युत् मोटर औद्योगिक प्रगति का महत्वपूर्ण सूचक है। यह एक बड़ी सरल तथा बड़ी उपयोगी मशीन है। उद्योगों में शायद ही कोई ऐसा प्रयोजन हो जिसके लिए उपयुक्त विद्युत मोटर का चयन न किया जा सके। |
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| 2. |
A force of 100N stops a body moving with a velocity of 20 m/s . The force required to stop the same body when moving 30 m/s in the same distance is |
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Answer» f=ma 100 N=m×20 100N÷20=m m=5kg f=ma f=(5×30) f=150N |
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| 3. |
Relative Motion question(class 11 cbse)Two trains, each having a speed of 30 km/h, are headedtowards each other on the same track. A bird that can fly60 km/h flies off the front of one train when they were60 km apart and heads directly to the other train. Onreaching the train, the bird flies back to the first train.What is the total distance the bird travels before thetrains collide? |
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Answer» Answer: 60 KM Explanation: Train will collide when Train 1 and Train 2 TRAVELS 30 Km each. Since SPEED of both is same, time take by train 1 and train 2 to cover 30 kms is 1 HR. In 1 hr, BIRD can travel 60 kms as its speed is 60 kms/hr. So answer is 60 kms. |
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| 4. |
विधुत मोटर कायं विधि give answer |
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Answer» विद्युत मोटर (ELECTRIC MOTOR) एक विद्युतयांत्रिक मशीन है जो विद्युत ऊर्जा को यांत्रिक ऊर्जा में बदलती है; अर्थात इसे उपयुक्त विद्युत स्रोत से जोड़ने पर यह घूमने लगती है जिससे इससे जुड़ी मशीन या यन्त्र भी घूमने लगती है। अर्थात यह विद्युत जनित्र का उल्टा काम करती है जो यांत्रिक ऊर्जा लेकर विद्युत उर्जा पैदा करता है। कुछ मोटरें अलग-अलग परिस्थितियों में मोटर या जनरेटर (जनित्र) दोनो की तरह भी काम करती हैं। विद्युत् मोटर विद्युत् ऊर्जा को यांत्रिक ऊर्जा में परिणत करने के साधन हैं। विद्युत् मोटर औद्योगिक प्रगति का महत्वपूर्ण सूचक है। यह एक बड़ी सरल तथा बड़ी उपयोगी मशीन है। उद्योगों में शायद ही कोई ऐसा प्रयोजन हो जिसके लिए उपयुक्त विद्युत मोटर का चयन न किया जा सके। |
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| 5. |
Define Bond Energy. |
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Answer» ❤️❤️✌️✌️❤️❤️ ➡️The energy REQUIRED to DISSOCIATE any BOND is known as bond energy. It depends on FOLLOWING factors :⤵️ ➡️Bond order. ➡️'s' character. ➡️Resonance. ➡️Bond length. ❤️Follow me❤️ ✌️Inbox✌️☺️ |
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| 6. |
The ratio of dimension of impulsive force to gravitational force? |
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Answer» Answer: Explanation: FOLLOW or BRAINLIST |
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| 7. |
Briefly explain both the given laws1. Dalton's law of partial pressure2. Avagadro's law |
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Answer» 1. Dalton's law of partial pressure- According to this law when MIXTURE of GASES are kept in a CONTAINER then the partial pressure will be EQUAL to the sum of individual partial pressure of each gas when they were in the same container alone. Like for 'n' number of gases 2. Avagadro's law- According this law under the SIMILAR condition of pressure and temperature all the gases of equal volume will have same number of molecule. PV = nRT |
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| 8. |
(a*2- x*2)*2 x |
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Answer» Answer: SAITAMA (サイタマ, Saitama) is the main protagonist of One-Punch Man and the most POWERFUL being to exist in the SERIES. Saitama FACES a self-imposed existential crisis, as he is now too powerful to GAIN any thrill from battle. |
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| 9. |
The time period of the variation of potential energy of a particle executing shm with time period T is-a) T/4b) Tc) 2Td) T/2e) T/3plz answer with explantion. |
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Answer» Explanation: The potential energy GOES from maximum(at positive END) to Zero(at centre) and again to maximum(at negative end) in one cycle. Hence, its frequency is 2F and time period is T/2 please mark it brainlist |
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| 10. |
A kite is flying with force of 25N, while air exerts a force of 5N . Calculate the resultant force acting on the kite when it flies in the direction of (i) wind (ii) against the wind .{Ans for checking:(i) 30N (ii) 25N} |
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Answer» Answer=(i) 30N OK is right✔ answer |
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| 11. |
an object of mass 2 kg is lifted vertically through a distance of 1.5 m. the work done in this process is |
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Answer» work done = weight*distance = 2*10*1.5 = 30 JOULES |
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| 12. |
Force doesn't change the mass of the body |
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Answer» no PROBLEM. it has to GO to the Mid-Eighteenth CENTURY, and BECAME a |
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| 13. |
A boat can travel at a speed of 8km/h in still water on a lake. In a floating water of a stream it can travel at 8km/h relative to the water in the stream. If the stream speed is 3km/h how fast can the boat move past a tree on the shore when it is traveling downstream and when it is traveling upstream. |
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| 14. |
Convert 2 into 10 to the power 11 dyne per CM square into newton m/second square |
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Answer» Answer: 2× 10^14 Nm/sec^2 Explanation: because 1dyn = 1/10^-5 Newton 1cm =1/ 100M so , 2× 10^11 = ----------------------- 10^-5 × 100
2×10^11 = -------------------- 10^-3 = 2×10^11 ×10^3 = 2 × 10^14 Nm/sec^2 ANS . |
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| 15. |
Convert 2 into 10 to the power 11 dyne per centimetre square into Newton per metre square |
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Answer» Answer: Explanation: 1dyn = 1/10^-5 N 2×10^11 dyn/cm^2 =-------------------------- 10^-5 × (100)^2 2×10^11 =. ----------------------------------- 10^-5 × 10^4 2× 10^11 = ---------------------------------- 10^-1
= 2× 10^11 × 10^1 = 2× 10^12. N/m^2 ANS. |
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| 16. |
A current of 5mA is passing through a wire. How many electrons are passing per minute through any cross section of the wire? |
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Answer» Answer: No.of Free ELECTRONS ( n ) = 18.75 ×10^17 ê Explanation: ★ CURRENT ELECTRICITY ★ GIVEN ; » CURRENT ( i ) = 5 mA » Time ( t ) = 1 minute = 60 sec. » Electric CHARGE ( e ) = 1.6 × 10^-19 C ★ No. of Free Electrons ( n ) = ??? ___ [ BY USING FORMULA ] ________ [ ★ no. of free electrons ( n ) =[CURRENT ( i ) × TIME ( t ) ] / ELECTRIC CHARGE (e) » n = [ 5 × 10-³ × 60 ] / 1.6 × 10^-19 » n = [ 300 × 10-³ ] × 6.25 × 10^18 » n = [ 0.3 ] × 0.625 × 10^19 » n = 0.1875 × 10^19 ★ → n = 18.75 × 10^17 ê ← ★ _________________________________________ ANSWER :- HENCE ; NO. OF FREE ELECTRONS passing through 5mA current in 1 minute is ; ♣ n = 18.75 × 10^17 ë ♥ |
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| 17. |
The effective resistance of the network between poit A and B |
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Answer» where is the figure Explanation: |
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| 18. |
What is static and kinetic friction? Explain with example.. |
Answer» Static friction acts until the OBJECT is in rest while the kinetic friction acts when the object is in motion___✘‿✘___ ♔Azhar♔ |
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| 19. |
Figure shows a-t graph. Find average acceleration in first 20 s.a(m/s)- |
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Answer» Answer: AVERAGE ACCELERATION = total change in velocity / time taken Total change in velocity = AREA under a-t CURVE Area under a-t curve = (1/2)*(10+30)*20 = 400m/s Change in velocity = 400m/s Time taken = 30s Average acceleration = 400/30 = 40/3 m/s^2 |
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| 20. |
Two copper conductors have equallength. The cross-sectional area of oneconductor is four times that of theother. If the conductor having smallercross-sectional area has a resistance of40 ohms the resistance of other conduc-tor will be(a) 160 ohms . (6) 80 ohms(c) 20 ohms (d) 10 ohms |
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Answer» d Explanation: the CROSS SECTIONAL AREA is INVERSELY proportional to the resistance. |
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| 21. |
What ishow do you corrrect the eye defect myopia |
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Answer» Explanation: The eye lens can form clear IMAGE on the RETINA when an object is PLACED be-tween far point and point of least distance of distinct vision. If we are ABLE to being the image of the object kept beyond far point, between the far point and point of least distance of distinct vision using a lens, this image acts as an object for the eye lens. This can be made possible only when a concave lens is used. |
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| 22. |
resultant of two forces is perpendicular to one of them. the forces are right and 250 grams write the angle between the forces is in Physics |
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Answer» Explanation: TWO forces P and Q have a RESULTANT PERPENDICULAR to P. The ANGLE ... What is the angle between the forces when the resultant of two forces ... |
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| 24. |
Just define time in HINDI under 15 wordz |
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Answer» समय कीमती है और हर किसी के लिए अमूल्य है, इसलिए हमें कभी समय बर्बाद नहीं करना चाहिए। हमें सकारात्मक ढंग से सही तरीके से समय का उपयोग करना चाहिए। हमें अपने बच्चों को बचपन से ही समय के महत्व या मूल्य के बारे में बताना चाहिए। आप बच्चों को समय की महत्ता या समय का मूल्य समझाने के लिए इस तरह के साधारण और सरल भाषा में लिखे गए समय के मूल्य पर निबंध या समय के महत्व पर निबंध का प्रयोग कर सकते हैं। हम स्कूल के विद्यार्थियों के प्रयोग के लिए भी बहुत से समय के मूल्य पर निबंध या समय के महत्व पर निबंध उपलब्ध करा रहे हैं। |
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| 25. |
Applications+of+moment+of+force+in+real+life |
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| 26. |
What way gravitational force is repulsive ? |
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Answer» Answer: Gravity is ALWAYS an attractive force. But in a SINGULARITY, Newton's second law COUNTERACTS with Newton's gravitation law and attractive force become the repulsive force. ... According to general relativity, the INITIAL state of the universe, at the beginning of the Big Bang, was a singularity. |
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| 27. |
A block of wood of mass 2kg is lying on the friction less table. A force of 8N is applied on it for 10s . Calculate it's kinetic energy . |
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Answer» like it |
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| 28. |
Define SI onit of force. A force of 2ml acting a ody changes it velocityuniformly from 2m/s to 5m/s in 10scalculate the mass of the body. |
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| 29. |
WHAT IS POWER, WORK, ENERGY ? |
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Answer» Answer: Power is the ABILITY to control people or things or to do someone. Work is to do SOMETHING which needs physical or mental effort, in order to EARN MONEY or to ACHIEVE something. Energy is the capacity to do work. |
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| 30. |
What is the range of efficiency of cupola? a) 30% to 50% b) 50% to 70% c) 20% to 40% d) 40% to 60% |
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Answer» Answer: HOPE it will help you. |
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| 31. |
Will the answer be (C) or (D)?? Please answer with explanation or derivation |
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Answer» Answer: D is the CORRECT option. Explanation: |
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| 32. |
If î, jcap and kcap represent unit vectors along the x, y, and z-axes respectively, then find the value of angle theta between the vectors î + jcap + kcap and î + jcap. |
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| 33. |
Why is pulling is easier than pushing |
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Answer» Answer: SIMPLY pull MEANS the force which moves towards us and PUSH means the force which moves FORWARD from us That's why pull is EASY than push |
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| 34. |
Fungi are plants that lack:A. OxygenB. Carbon dioxideC. ChlorophyllD. None of these |
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Answer» Option (C) is the answer ♥ Fungi are plants that LACKS Chlorophyll ♥ We know that plants can PREPARE their own FOOD with help of sunlight, oxygen and CARBONDIOXIDE to survive ♥ but fungi lacks a green pigment called chlorophyll which helps for this process ♥ so they cannot prepare their own food hope it helps u.....❣️ |
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| 35. |
Why radiation don't require any medium |
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Answer» Answer: HEY... Radiation mode of heat transfer occurs with the particles CARRYING energy with it. Most of those particles do not require MEDIUM for propagation for example light (photons), ELECTRONS or sub atomic particles and ions. hence the RADIATIONS do not require a medium |
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| 36. |
Who in 1786 invented the gold leaf electroscope? |
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Answer» Answer:
please MARK me BRAINLIEST |
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| 37. |
Using velocity time graph derived the equation S= V(0)t + 1/2 at^2 |
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Answer» This is how to DERIVE s=it + 1/2at^2 |
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| 38. |
2 mettalic wires of same material are connected in parallel circuit. Wire A has length L and radius r, wire B a length 2L and radius 2r.calculate the ratio of equivalent resistance and resistance of wire A. |
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Answer» EXPLANATION:HOPE IT HELP |
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| 39. |
The first scientist to apply scientific reasoning to cosmology was Rene Descartes. What was his theory called? |
Answer» HELLO...➡️ CALLED VORTEX Theory.Hope it's HELP...@hardikrakholiya21❤️. |
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| 40. |
Derive v=u+at. DON'T ANSWER GRAPHICAL PRESENTATION |
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Answer» this is by INTEGRATION METHOD |
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| 41. |
A bike start with speed of 20km/h and it's acceleration is 10km/h for 30 minute find final velocity of bike |
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Answer» Speed or initial velocity (u) 20kmph 20x 5/18 =50/9 m/s =5.55 m/s Acceleration(a)= 10km/hr^2 (10 x 1000)/ 3600 x 3600= 1/1296 m/s^2 Time (t) 30 minutes =1800 seconds Final velocity(V) = u at v =50/9 + 1800/1296 => v=6.94 m/s Hope it HELPS, if it does, PLZ mark as BRAINLIEST.... |
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| 42. |
A particle is moving a straight line with constantacceleration passes through points A and B withvelocity 1 m/s and 4 m/s respectively, find velocity ofthe particle at point p between A and B so that PA/PB=41.√142.√383.√134.√19 |
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Answer» √13 m/s Explanation: A••••••••••••••••P••••B Distance between A and B = S So, AP = 4S/5 PB = S/5 Use equation of motion: S = (v² - u²)/(2a) From A to P 4S/5 = (V² - 1²)/(2a) ......(1) From P to B S/5 = (4² - V²)/(2a) .......(2) Divide (1) by (2) (4S/5) / (S/5) = [(V² - 1²)/(2a)] / [(4² - V²)/(2a)] 4 = (V² - 1)/(16 - V²) 4(16 - V²) = V² - 1 64 - 4V² = V² - 1 5V² = 65 V² = 65/5 V² = 13 V = √13 m/s |
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| 43. |
Why is the cooling unit of a refrigerator made at the top |
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Answer» Answer: It is because hot air from I is RISES up and the frees POINT of REFRIGERATOR absorb this and REMOVE from the refrigerator so that the THING which is keep in refrigerator will be cool |
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| 44. |
A stone is falling from top of tower covering distance 24.5 in last the second of its motion find night of the tower??? |
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Answer» Answer: Explanation:LET the stone is thrown from ground then the DISTANCE in FIRST second is equal to dist. in last sec. hope it HELP |
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| 45. |
What is the equivalent mass of oxygen in H2O2 |
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Answer» Answer: Oxygen has an atomic weight of 15.999 and always assumes valence 2 in COMPOUNDS, so its equivalent weight is 7.9995. MOLECULAR mass of Hydrogen Paraoxide i.e. H2O2 is 34 g. hope it helps u mate mark as brainliest and follow me..!! |
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| 46. |
Hey mates,Why is tungsten metal used in bulbs, but not in fused wires? |
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Answer» tungsten metal has a very high melting point and for bulbs which constantly needs ENERGY to glow BECOME very hot so it NEED a high melting point element so that it doesnt melt . but in fuse wires a low melting point wire is needed so that it can warm and BREAKS to save electronic appliances but tungsten has a high melting point so it is not used in fuse wiring the working of fuse is to break the wire if it gets too much electric current then needed so that the appliances doesnt FUSES. |
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| 47. |
Who encouraged Newton to write his idea for Principia? |
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Answer» EDMUND Halley ENCOURAGED NEWTON to write his idea for Princioia. Mark as Brainliest |
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| 48. |
Please answer q.no. 5 immediately |
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Answer» average velocity is 7m/s avg acceleration is 4m/s Explanation: s=6-3t+2t2 s=6-3×1+2×1 s1=5 now putting t=4 similary by solving s2=26 now avg velocity= s2-s1/t2-t1 =26-5/4-1 =21/3 =7m/s now for acceleration differentiat the equation ds/dt=d/dt×6-d/dt×3t+d/dt×2t2 v= -3+4t putting 1 In t v1=1 similarly putting 4 in t V2=13 now avg acceleration is V2-v1/t2-t1 solving avg acceleration is 4m/S2 |
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| 49. |
Si Unit for speed and velocity |
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Answer» SPEED = km/h or m/s Velocity = m/s Please MARK As BRAINLIEST... |
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