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. |
Velocity of sound in vaccum is |
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Answer» Explanation: The SPEED of sound in a vacuum is zero METERS per second, as there are no particles present in the vacuum. The sound WAVES travel in a medium when there are particles for the propagation of these sound waves. SINCE the vacuum is an empty space, there is no propagation of sound waves. |
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| 2. |
The velocity of sound in free space |
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Answer» The speed of sound in a VACUUM is ZERO meters per second, as sound cannot TRAVEL in a vacuum. Sound is a wave, which means it spreads through the vibration of particles in a medium, such as water or AIR. Since a vacuum is empty space, there is no medium for the sound to travel through ★ ° . * ° . °☆ . * ● ¸ . ★ ° :. ★ * • ○ ° ★ . * . . ° . ● . ★ ° . * ° . °☆ . * ● ¸ . ★ ° :●. * • ○ ° ★ . * . . ° . ● . ★ ° . * ° . °☆ . * ● ¸ . ★ ° :. * • ○ ° ★ . * . ★ . ° . . ★ ° °☆ ¸ |
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| 3. |
What the waves carries as it travels? |
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Answer» Light, HEAT, RADIO, and similar types of energy are carried by a VARIETY of WAVES in the ELECTROMAGNETIC SPECTRUM. Some energy waves need a medium, such as water or air, through which to travel. |
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| 4. |
calculate the torque and potential energy of dipole having charges +-2 microcoulomb and dipole length 5 cm placed in a uniform electric field at the angle of 30 degree |
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Answer» Answer: PLEASE following me What kind of POEM will the poet NEVER see? Why is it so? В. What sight is LOVELY? С. Describe the tree as described in the poem. D. Who can make a tree? |
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| 5. |
ال اجرا6velocity Time graph of a car tsploatedthe graph totbelowelseave2 lho parSolee43. Bolalal824610Afind the extration duringthe Ist 4 seconds of① fund the Owerage velocity duringIst ureconds of motionfind the average speed of Cal 9over to sec's.3wstat |
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Answer» بلاک نتااrhedhehevv egwheveehehe3vve3veh ebehhheb4b4 |
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| 6. |
During earth quake take shelter under a table,,,true or flase |
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Answer» <STRONG>Answer: the answer is true during EARTHQUAKE we must TAKE SHELTER under a strong table |
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| 7. |
What is paralytic second (parsec)? |
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Answer» Parallactic SECOND or PARSEC is a unit of large distances used by the astronomers to measure large distances OUTSIDE our solar SYSTEM. One parsec is defined as the distance between the line drawn from the centre of the Earth and the Sun making an angle of 1 second with each other. |
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| 8. |
which two quantities will you need to measure in order to find the speed of a vehicle, and which instruments would you ise to measure them |
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Answer» kilometre PER HOUR, ACCERASSION Explanation: speedo METER |
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| 9. |
A velocity Time' graph of a car isploated Iselowthe grapheColeaveTOol6a246810Seconds of mfund the exceration durinethe Ist ។Sund the average velocity duringIst useconds of motionfind the average speed of carover to Sec?s. plz jaldee ans bolo mko exam a |
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Answer» hbsbsjsnsusu2ve8b3handns9wnwnskss |
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| 10. |
IsanExamplewhicle frictionaloraluunalposeeofConservalineforceforceexample ofConservation forcenon- –extemplo expression for youngterms of its24 Deduemodulusradi us 2Ansofeureen |
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Answer» నీకు తెలుసా? ఎయిర్టెల్ తో గడువుకు ముందే మీరు రీఛార్జ్ చేస్తే, మీ ప్రస్తుత ప్యాక్ వాలిడిటీలో మీ ప్యాక్ వాలిడిటీ జోడించబడుతుంది, కాబట్టి రీఛార్జ్ చేయడానికి చివరి రోజు వరకు వేచి ఉండకండి. క్లిక్ చేయండి u.airtel.in/rchg5 |
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| 12. |
Pls answer Anyone answer it Then I'mma mark them as brainliest |
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| 13. |
Define critical velocityobtain an expression for critical velocity of an orbiting satellite |
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Answer» Answer: The SATELLITE is moving with velocity VC and the radius of the circular orbit is r = R + h. This is the expression for critical velocity of a satellite moving in a circular orbit around the EARTH. where gh is the acceleration due to gravity at a height h above the SURFACE of the Earth. |
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| 14. |
Give the hierarchy of five kingdom classification of living world.42. A 8000 kg engine pulls A train of 5 wagons each of 2000 kg along a horizontal track ifthe engine exerts a force of of 40000 Newton and the track offer a friction force of 5000Newton then calculate-a) the net acceleration force. b) the acceleration of the train.{can anyone help me} |
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Answer» Answer: Mass of engine M=8000 kg Mass of each wagon m=2000 kg Frictional force acting in BACKWARD direction F=5000 N (a) : The net force acting on the train F ′ =F−f=40000−5000=35000 N (b) : Let the acceleration of the train be a ∴ F ′ =(5m+M)a 35000=(5×2000+8000)a ⟹a=1.944 ms −2
(c) : External force is APPLIED directly to wagon 1 only. The net force on the LAST four wagons is equal to the force applied by wagon 2 by wagon 1. Let the acceleration of the wagons be a ′
35000=(5m)a ′ ⟹35000=10000×a ′
Acceleration of the wagons a ′ =3.5 ms −2
Mass of last 4 wagons m ′ =4×2000 kg ∴ Net force on last 4 wagons F 1
=8000×3.5 =28000 N Thus force on wagon 2 by wagon 1 is 28000 N. |
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| 15. |
find the percentage error in kinetic energy of a body having mass 60.0+0.3g moving with velocity 25.0+0.1cm/s |
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Answer» The % UNCERTAINTY in mass = 0.3/60×100=0.5% and % uncertainty in mass = 0.1/25×100=0.4% KE = 1
2
KE = m + 2v KE = 0.5 + 2×0.4 KE = 1.3% uncertainty. |
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| 16. |
A velocity time graph of a car is plotted below. Observe the graph to answer thefollowing questions:(i) Find the acceleration during the first 4 seconds of motion.(ii) Find the average velocity during the first 4 seconds of motion(iii) Find the average speed of the car over the 10 seconds can you please show me the method of last part |
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| 17. |
Section A1. Translate the following statements intochemical equationsand then balance them: Potassium metalreactswith watertogive potassium hydroxide and hydrogengas.TORMethane bumsin oxygen to form carbon dioxide and water. Write a balanced equation for the reaction.2. Identify the reducing agent in the reaction:4NH3 + 50 2 ---+ 4NO + 6H20 |
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| 18. |
What is the acceleration produced in abody of mass 350 gm a force of5N acts on it, |
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Answer» Answer: 0.5 m/s2. Explanation: |
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| 19. |
Derive the expression for magnetic field due to bar magnet an orbitrary point |
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Answer» Answer: Al-Attempt any Eight-2 marks each) 3) EARTH's MAGNETIC field at the EQUATOR is approximately 4x10 T. Calculate Earth's dipole moment. (Radius of Earth = |
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| 20. |
Magnetic field inside the solenoid is |
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Answer» Answer: The magnetic field inside a SOLENOID is PROPORTIONAL to both the applied CURRENT and the number of turns PER unit length. |
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| 21. |
An object A moving with a speed of .65c relative to earth and another object B moving with a speed .76c relative to A.calculate speed of object B relative to if earth if these object travelling Sam direction |
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Answer» Answer: SORRY but I am new here and I don't know how to ASK question..would please HELP me in this favour ......if u don't mind |
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| 22. |
Write a note on continuous X-ray spectrumdont spam please this for my final exam |
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Answer» Answer: The continuous X-ray spectrum refers the range of photon energies produced in an X-ray tube DUE to the PROPERTIES of BREMSSTRAHLUNG radiation. The energy of X-ray photons can TAKE a value from ZERO to the maximum kinetic energy of the incident electrons. Explanation: |
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| 23. |
27. The resistance of a tungsten wire is 1000 22 at 0°C and 1045 12 at 10°C. Calculate thetemperature coefficient of resistance of tungsten.A) 0.0045/°CB) 0.1045/°CC) 0.0010/°C D) 0.004/°C |
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Answer» Explanation: 1000 22 at 0°C and 1045 12 at 10°C. CALCULATE the temperature coefficient of RESISTANCE of tungsten. Answer = d 0.004°c |
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| 24. |
a pile of mass 500kg is driven into ground by dropping hammer freely, having mass of 318kg through height of 2.7m. If pile is driven into ground, by 0.15m, calculate average resistance of soil. |
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Answer» Given info : a pile of MASS 500kg is driven into ground by dropping hammer freely, having mass of 318 KG through height of 2.7m. If pile is driven into ground, by 0.15m. To find : the average resistance of soil is.. solution : mass of hammer, m = 318 kg it is freely dropping, so initial velocity of hammer is zero. velocity of hammer just before striking the pile, v = √(2gh) here, g = 9.81 m/s² , h = 2.7 m so, v = √(2 × 9.81 × 2.7) ≈ 7.28 m/s now after striking the pile, hammer and pile both move together into the ground. so, common velocity of them, v' using law of conservation of linear momentum, mv + 0 = (m + M)v' ⇒(318 × 7.28) = (318 + 500) × v' ⇒v' = (31.8 × 7.28)/(31.8 × 500) = 2.83 m/s now KINETIC energy of both and WORK done while falling through a distance 0.15 m in the soil, will be observed by the soil. so, kinetic energy of both, K = 1/2 (m + M)v'² = 1/2 × (318 + 500) × (2.83)² = 3275.6 J and work done = (m + M) × g × h' = (318 + 500) × 9.81 × 0.15 = 1203.7 J now total energy gained by soil = 3275.6 + 1203.7 = 4479.3 J from conservation of energy THEOREM, 4479.3 J = resistance of soil × 0.15 m resistance of soil = 4479.3/0.15 = 29862N |
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| 25. |
What is the capital of India ? |
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| 26. |
What is technology..?. Can anyone give me thanks..? ..(≧▽≦) |
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Answer» Answer: The SCIENTIFIC knowledge or equipment that is needed for a PARTICULAR INDUSTRY is CALLED technology. |
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| 27. |
a bulb draws current of 1.5A at 6.0 find the resistance of filament of bulb while glowing. what amount of charge passes through the conductor when current flows through the filament of 2.0 s |
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Answer» I = 1.5 A V = 6.0 V According to OHM’s law, V = IR ∴ R = V I = 6.0 1.5 = 4 Ω |
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| 28. |
The current flowing through the wire is 40 A for 40 seconds. what is the charge of the wire? |
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Answer» Q= I×T Q= 40×40 = 1600C |
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| 29. |
5. Obtain an expression for the equation of trajectory of a projectile. Suggest its natureof path. |
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Answer» hhhhhhhhhjj uuuuuuuuuu iiiiiiiii |
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| 30. |
In the brake pads of bicycle, friction is ___________(a) zero (b) nuisense (c) useful (d) both a and b |
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Answer» Answer: There is sliding friction between the brake PADS and bike rims each TIME you use your bike's BRAKES. This friction slows the ROLLING wheels so you can STOP. |
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| 31. |
What is the statement of Newton second law of motion |
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Answer» Newton's second LAW of motion states that : The ACCELERATION of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and INVERSELY proportional to the mass of the object. |
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| 32. |
Explain gravitational force and electromagnetic force with characters |
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Answer» Explanation: GRAVITY is WEAKER FORCE than Electromagnetism. Gravitational Forces are usually increased when a larger mass is accumulated, WHEREAS Electromagnetic Forces are made when there are slight imbalances caused by small SEPARATIONS of charge. |
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| 33. |
Visible light comprises of wavelength in the range |
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Answer» Visible light CONSISTS of rays with wavelengths in the approximate RANGE of 4000 A ˚ to 7500 A ˚ . This corresponds to 4 ×10 −7 m to 7.5 ×10 −7 m . This also corresponds to 4 ×10 −5 cm to 7.5 ×10 −5 cm. This also corresponds to 400 NM to 750 nm. |
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| 34. |
During the motion of a wheel on the road, velocity has _________ components :(a) 1 (b) 2 (c) 3 (d) any number |
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Answer» Explanation: |
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| 35. |
The angle between the vectors A and B is theta. then show that a.(axb)=0 |
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Answer» Answer: ( B × A )⋅ A =−BAsinθ n ^ ⋅ A =0 Vector A and n ^ are PERPENDICULAR to each other as direction of n ^ can be GIVEN by RIGHT hand screw rule. Dot product of TWO vectors is zero when they are perpendicular to each other. |
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| 36. |
4) What is the relation in B.E.and T.E of a body when tis atrest on earth'ssurface |
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Answer» NET UPWARD FORCE is EQUAL to net DOWNWARD force
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| 37. |
The units which are used to measure small quantities are called______.Please tell me the answer |
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| 38. |
Killo watt per meter square is the unit of |
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Answer» I TE ouphhrgellu |
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| 39. |
About father of Quntem physics |
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Answer» FATHER of quantum MECHANICS is a MONIKER APPLIED to several individuals. Strictly speaking, Max Planck, Werner Heisenberg, and Erwin Schrödinger have equal claim and recognition. |
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| 41. |
Newton meter is equel to |
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Answer» Explanation: The Newton METER is a MEASUREMENT of torque.One Newton meter is equal to approximately 0.738 pound- feet.I HOPE this ANSWER is helpful to you please follow me |
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| 42. |
A ring of radius r has linear charge density lambda |
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Answer» Answer: Technology is the skills, methods, and processes USED to achieve goals. People can use technology to: Produce goods or services Carry out goals, such as scientific investigation or sending a spaceship to the moon Solve PROBLEMS, such as disease or famine Do things we already do, but more easily. Technology can be KNOWLEDGE of how to do things. MACHINES are EXAMPLES of embed. This lets others use the machines without knowing how they work. Technological systems use technology by taking something, changing it, then producing a result. They are also known as technology systems. |
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| 43. |
Same amount of force acts on twobodies one of mass 2g and the otherof mass 5g. If the acceleration of thefirst body is 5m/s, find acceleration ofthe other body . with proper answer and statement |
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Answer» Answer: what are your not a BAD THING is its t shirts and the other HAND R |
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| 44. |
Calculate the work done, tocarry 125 oo x los electionsfrom point at 2 v to a pointat 17 N. |
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Answer» rsutstjstjdtidtidtidtidtidtistisi5d5dyifyidygkydyfudteuttiroffjrky tudtstftidyfykfykdtidyieyfbmif7d or other TYPES MAY 55have 7AM ACID cczjxtfhdkyctjdycnxur |
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| 45. |
Explain the technique involved in separating the components of ink using paper chromatography |
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Answer» Answer: Through the submersion of chromatography paper into WATER, any sample of ink can be SEPARATED into its respective cyan, magenta, and yellow components. The water causes the ink MOLECULES to "travel" up the paper STRIP. |
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| 46. |
Ate2Divide: | भाग दीजिये-20/31- 15/6224/236322/32 3/2 |
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Answer» FIRST first ONE is the right first because if you multiply 20 by 31 and 15 by 62 so we will get 24 / |
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| 47. |
A baseball player hits back the ball straightin the direction of the bowler without changing its initial speedof 12 ms. If the mass of the ball is 0.15 kg. Find the impulseimparted to the ball. (Consider the ball in linear motion) |
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Answer» Explanation: i no CRICKET |
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| 48. |
If a body remove 5×10¹⁰ no of electrons, calculate the magnitude of charge |
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Answer» Answer: 8×10^-9 Explanation: FOLLOW the INSTRUCTIONS given above. May this answer will help you. Please mark me as a BRAINLIST and follow. |
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| 49. |
) Ifaperson Covers 100m in 20 Sec find thespeed of the person |
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Answer» Answer: 5m/sec Explanation: DISTANCE=100m time=20sec speed =distance /time speed=100/20 speed =5m/sec |
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| 50. |
इफ द डिस्टेंस बिटवीन एंड ऑब्जेक्ट एंड फिट इमेज इन ए प्लेन मिरर इज 5.6 सेंटीमीटर हाउ फर इज द ऑब्जेक्ट फ्रॉम द मिरर? |
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Answer» Answer: Explanation: For plane mirrors, the object distance (often REPRESENTED by the SYMBOL do) is equal to the IMAGE distance (often represented by the symbol di). That is, the image is the same distance behind the mirror as the object is in front of the mirror. For example, if we stand at a distance of 2 meters from a plane mirror, we must focus at a location 2 meters behind the mirror in order to view our image. In this case, the distance between the object and its image formed by a plane mirror appears to be 24 cm. So, the object distance will be 24 / 2 = 12 cm. Hence, the distance between the mirror and the object is 12 cm. |
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