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 circular, long,thin, dielectric fiber that can transfer___________and information is called optical fibera. sound energy b. heat energyc. light energyd. all of these |
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| 2. |
A ball of mass 0.16kg is moving forwards at a speed of 0.50 m / s. A second ball of mass 0.10 kg is stationary. The first ball strikes the second ball. The second ball moves forwards at a speed of 0.50 m / s.What is the speed of the first ball after the collision?I have a physics exam coming up, can someone please help me??? |
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Answer» Answer: Simply apply CONSERVATION of momentum as the net EXTERNAL FORCE on system is zero. 0.16×0.50 + 0.10×0=0.10×0.50 + 0.16×v 0.080=0.050+0.16v 0.16v= 0.030 v= 0.375 m/s Hope it helps. |
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| 3. |
Differentiate with respect to x:y = 3√x + 2 |
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Answer» Explanation: bdhdjjekekenenbebebebeebbeb |
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| 4. |
How does earth possess magnetic field |
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Answer» you have a rotating ELECTRIC current, it will create a magnetic FIELD. On Earth, FLOWING of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which EXTENDS around the planet. |
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| 5. |
A short note on hydro power plant |
Answer» Water at a height has potential energy stored in it. When this water falls down, its potential energy is converted to kinetic energy.Water at a height has potential energy stored in it. When this water falls down, its potential energy is converted to kinetic energy.Hydro POWER plants utilise this kinetic energy to generate electricity.Water at a height has potential energy stored in it. When this water falls down, its potential energy is converted to kinetic energy.Hydro power plants utilise this kinetic energy to generate electricity.Thus, these plants are built around dams.Water at a height has potential energy stored in it. When this water falls down, its potential energy is converted to kinetic energy.Hydro power plants utilise this kinetic energy to generate electricity.Thus, these plants are built around dams.The water from a HIGH level in the dam is carried through pipes, to the TURBINE at the bottom of the dam. The turbine of the generator rotates, and the generator produces electricity. |
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| 6. |
Application of force can change the______,________ana________ of an object |
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| 7. |
If an object is moving in a straight line what will be the relation of value of speed and velocity |
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| 8. |
The given valu of i is 25am and t is 3sec find the value of q |
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Answer» CHARGE (Q)=CURRENT (i) ×time (t) Q=25×3=75 |
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| 9. |
Define physica capital |
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Answer» Answer: |
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| 10. |
A WIRE OF RESISTANCE R HAVING A LENGTH L AND AREA OF CROSS SECTION A . WHAT IS THE RESISTANCE OF ANOTHER WIRE OF SAME MATERIAL HAVING A LENGTH 2L AND AREA OF CROSS SECTION 4A? |
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Answer» R is DIRECTLY proportional to length and inversely proportional to area R=rho l/A R1=rho 2l/4A R1=R/2 |
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| 11. |
DatePageTwo bodies of m and 4m are moving with equalkinetic energy The ratio of their linear momwntom is. |
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Answer» I can't UNDERSTAND your QUESTION |
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| 12. |
Draw a lens in differentfive rarer images |
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Answer» HEY!!! Here is your answer... Hope it helps... |
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| 13. |
A wire of resistance R is cut into five equal pieces. These five pieces of wire are then connectedin parallel. What is the equivalent resistance of this combination in terms of the originalresistance R? |
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Answer» PLS MARK as the BRAINLIEST |
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| 14. |
A train starting from rest, picks up a velocity of 20m/s in 200s. It continues to move at the same rate for the next 500s and is then brought to rest in another 100s. Plot a v-t graph and calculate average velocity. |
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Answer» Answer: First let US plot the graph with the data given. Let the STARTING point be the origin in the speed - time graph. (a) Uniform rate of acceleration = slope of AB = (20−0) (m/s)/ [(200−0) s] = 0.1 m/s2. (b) Uniform retardation = − slope of CD = − (0−20)(m/s) /[(800−700)s] = 0.2 m/s2. (c) Total distance COVERED before stopping = area under the curve ABCD = area of ΔABE + area of rectangle BCFE + area of ΔCDF = ½ x 200 x 20 + 500 x 20 + ½ x 100 x 20 m = 2000 + 10000 + 1000 m = 13,000 m = 13 KM (d) Average speed = Total distance covered/total time taken = 13000 m /(800 s) = 16.25 m/s |
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| 15. |
Many people dream about building a colony onMars, but the atmosphere is primarily made of |
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Answer» Answer: The ATMOSPHERE consists of 95% carbon dioxide, 3% nitrogen, 1.6% argon, and the remainder is TRACE amounts of OXYGEN, water VAPOR, and other gases. Mark as brainliest pls! |
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| 16. |
Can a body acquire a total charge of 5.0×10^-19 coulomb |
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Answer» No...because the NUMBER is not DIVISIBLE by 1.6 * 10^-19 i.e the charge on ONE electron. I HOPE IT WILL HELP YOU. |
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| 17. |
Is it possible tat distance travelled by a body is zero and displacement is a non zero |
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Answer» Answer: The 100% right answer is - No it's not POSSIBLE for a BODY because DISTANCE can never be zero. Explanation: |
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| 18. |
Name the type of chemical reaction responsible for rancidity and define it |
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Answer» Answer: The Maillard reaction is a chemical reaction between amino acid and reducing sugars that gives browned food its distinctive flavor ... The reaction is the BASIS for many of the flavoring INDUSTRY RECIPES. At high temperatures, a probable carcinogen CALLED acrylamide can form |
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| 19. |
"Magnetism is induced in current carrying conductor" Name any two devices you use in your dailylife based on this principle? |
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Answer» ELECTRIC FANS, electric BELLS and most of the THINGS which ROTATE. |
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| 20. |
Two forces 8N and 12N act at 120 degrees.the third force required to keep this in equilibrium |
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Answer» Answer: 8N and 12N act at 120 degrees.the third force REQUIRED to KEEP this in equilibrium8N and 12N act at 120 degrees.the third force required to keep this in equilibriumtwo forces 8N and 12N act at 120 degrees.the third force required to keep this in equilibrium... |
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| 21. |
during training an athlete sprints 30m east and then west what is the distance travelled and the displacement from the starting point |
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Answer» distance=60m displacement=0 |
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| 22. |
How can you measure the radius of curvatures from the figure? If you solve I will keep in braniliest answer |
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Answer» then f=r/2 |
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| 24. |
A stone of mass 0.12 kg is fired from a catapult. The velocity of the stone changes from 0 to 5.0 m / s in 0.60 s. What is the average resultant force acting on the stone while it is being fired? |
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Answer» Answer: 1 NEWTON Explanation: f=m(v-u)/t f=? m=0.12kg u=0m/s v=5m/s t=0.6 seconds f= 0.12(5-0)/0.6 f= 0.6/0.6 f=1 Newton 1 Newton is the FORCE |
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| 25. |
How do you find the curvature of curved refracting surfaces |
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| 26. |
Draw a lens in different five rarer images |
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Answer» I don't now......................... |
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| 27. |
What is the live ditecter and what work it |
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Answer» Answer: It makes you pant. It drives up your blood pressure and makes you drip sweat. A polygraph MACHINE detects lies by looking for signs of these physiological CHANGES. ... As SOON as the examinee tells such a white lie, it puts a blip on the polygraph machine that serves as a signature of that examinee'sA polygraph, popularly referred to as a lie detector test, is a DEVICE or procedure that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity while a person is asked and answers a SERIES of questions |
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| 28. |
1. the mass of an object is 60 kg , what is its weight (g= 10 ms-2)2.if the gravitational acceleration on the moon is 1/6th that of the earth, what would be the weight of the above object on the moon |
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Answer» Answer: 1- WEIGHT= 600N Explanation: |
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| 29. |
Draw a ray diagram the formation of vertual image by convex image |
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Answer» here is your ANS in this IMAGE. . |
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| 30. |
Write the short note about Neptune |
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Answer» Answer: hi THIS ONE IS YOUR ANSWER Explanation: Neptune is the 7th planet from the sun. It is the fourth largest planet in term of DAIMETER. Thirt most massive planet if the solar SYSTEM. 17 times more massive from the planet earth Nd slightly more larger than Uranus. A year on Neptune lasts 165 earth years. It has 6 FAINT rings around it. Neptune GOT it's NAME from A Greek god. THAT'S ALL BUDDY HOPE U GET IT |
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| 33. |
Verify the inertia of rest |
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Answer» when an object starts MOVING from its position of REST SUDDENLY is known by inertia of rest |
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| 34. |
Which amongst the following is a quantity and why? distance |
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Answer» MATE, DISTANCE is a scaler quantity because this is a physical quantity and this quantity have only magnitude and described by numeric value. Explanation: distance is a scaler quantity because we know only about the path TAKEN . |
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| 35. |
What is the energy of photon that corresponds to a wave number of 2.5*10-5 cm |
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Answer» GIVEN wave number = 2.5*10-5 cm-1 = 2.5*10-3 m-1 energy of PHOTONS is given by E =HC*wave_number E = 6.636*10^-34 * 3*10^8 * 2.5* 10-3 = 4.969*10^-28 JOULES |
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| 36. |
What do you mean by pressure ?how can we increase the pressure by exerting same amount of force |
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Answer» Answer: PRESSURE is defined as the force exerted PER area. Pressure can be increased by DECREASING the area of a SURFACE so that more force will be applied at a PLACE. |
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| 37. |
Calculate the speed of an object if it covers 600 metres in 30 seconds. |
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Answer» Answer: 20 meter PER secondExplanation: given...Distance 600 metersTime 30 secondswant to find speed...FORMULA OF SPEED :-Speed = distance / timeput the value of given distance and timespeed = 600/30=20 meter per second |
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| 39. |
State true or false s.i unit of acceleration is m/s |
Answer» HEY mate !Here's your answer : FalseExplanation: the the SI unit for acceleration is METRE PER SECOND square.
Mark as Brainliest⚽⚽⚽ |
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| 40. |
Hihru allcan you tell what u mean by refraction index |
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Answer» Answer: refractive INDEX is the ratio of SPEED of LIGHT in MEDIUM 1 to medium 2 |
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| 41. |
If earth stops rotating what is the gravity on the surface of earth |
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Answer» Explanation: when the earth STOPS ROTATING its GRAVITY is INCREASES in EQUATOR |
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| 42. |
The operation of the fiber optic cable is based on the principle of _____________a. absorptionb. adsorptionc. dispersiond. none of these |
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| 43. |
No force act on current carrying conductor.when it is kept |
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Answer» ANSWER:PARALLEL TO MAGNETIC FIELD Explanation: |
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| 44. |
2 spheres of mass 35kg are 60m apart.what force does one exert on the other |
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Answer» Answer: The FORCE exerted by the SPHERE on each other is = 2.28 * 10^-15 N I HOPE IT WILL HELP YOU. |
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| 45. |
Arrange in increasing order 5 m per second ,10 m per s., 16.65 m per second |
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Answer» Answer: |
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| 46. |
Convert 10 J of energy into that system in which basic unit for Mass is 100g, basic unit for length is 10cm, basic unit of time is 5 second? |
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Answer» The density of the material in cgs system of units is 4g/cm3. In a system of units in which UNIT of length is 10CM and unit of mass is 100G ,the value of densit... |
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| 48. |
In the activity observing the arrow mark through a transparent beaker :(i) why the arrow appears smaller than its actual size (ii) why it appears inverted when the breaker is filled with water |
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Answer» Explanation: These all are because of refraction. BENDING of light INCIDENT OBLIQUELY on the surface seperating 2 MEDIA is known as refraction Pl. Vote |
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| 49. |
A current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes.Find theamount of electric charge that flows through the circuit. |
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Answer» i=q/t q=0.5(10*60) q=0.5*600 q=300coulmbs |
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| 50. |
The mass of an object is 60 kg. what is its weight? (g = 10 ms-2 |
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Answer» weight = 60× 10 =600Newton. |
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