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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 6051. |
Q.7 (a) Write the necessary conditions for the phenomenon of total internal reflection to occur.(b) Write the relation between the refractive index and critical angle for a given pair of optical media. |
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Answer» Angle should be smaller |
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| 6052. |
explain the term neutralization with a suitable example |
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Answer» Aneutralization reaction is when an acid and a basereactto form water and salt and involves the combination of hydrogen ions and hydroxyl ions to generate water. Example– 1: When Sodium hydroxide is added to hydrochloric acid. Sodium chloride and water are formed. neutralization is a type of chemical reaction in which a strong acid and strong base react with each other to form water and salt . example - bee stings are acidic in nature |
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| 6053. |
what is the initial speed of light |
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Answer» The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is299,792,458 metres per second (approximately300,000 km/s(186,000 mi/s)). |
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| 6054. |
Which one of the following is the correct set-up for studyingdependence of the current on the potential difference across a resistor/ and why ?1231/4/2 |
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Answer» A is the correct answer Option A is correct as its having Voltmeter connected across resistance with the right polarity |
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| 6055. |
21. A resistor has a resistance of 176 ohms. How many of these resistors should be connected in parallel so thattheir combination draws a current of 5 amperes from a 220 volt supply line ? |
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| 6056. |
21. A resistor has a resistance of 176 ohms. How many of these resistors should be connected in parallel so thattheir combination draws a current of 5 amperes from a 220 volt supply line? |
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| 6057. |
Example 5Find output voltage Vosi2VVo1K2-1V |
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| 6058. |
Example 5Find output voltage Vo2V4VVoM1K02-1V |
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| 6059. |
The getuntial difterence appliedamas a given resistor is altered, sothas the heat produced per secondueaaes by a factor of 9. By whatfactopdoes the applied potentialfhtsnea change?igure shown, an ammeter Ad a sstor of 4 2 are connected toe eninals of the source. The emfchef in,Ä°rrn ia 12 V having anAnd ammeter rondingsAll Indlo 2017 |
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| 6060. |
What is the total quantity of charge flows in 5 minutes when a current of 2 amperes exist in aconductor? |
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Answer» Now given thatcharge =? time =5min = 6 x 60 sec= 300sec. I = 300/2= 150 |
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| 6061. |
resistance. Find theJ of heat is produced each second in a 4ential difference across the resistor |
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| 6062. |
an online non-credit course authorized by Stanford University and offered throughCoursera |
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Answer» Please post complete question. |
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| 6063. |
) In a circus, motor cyclist having mass of 50 kgmove in a spherical cage of radius 3m. Calculatethe least velocity with which he must passhighest point without loosing. Also calculate hisangular speed at highest point. |
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| 6064. |
In a circus, motor cyclist having mass of 50 kgmove in a spherical cage of radius 3m. Calculatethe least velocity with which he must passhighest point without loosing. Also calculate hisangular speed at highest point. |
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Answer» Thanks you so much |
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| 6065. |
potential difference of 220 V is appliedcross a rheostat AB of 12000 ohm. Thecoltmeter V has a resistance of 6000 ohm andCB is one fourth of the distance of AB. Theerror in the reading of voltmeter isapproximately -220VWwwwwwwwe (261er60001(1) 27%(2) 10%(3) 40%(4) 15% |
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Answer» (1) is a correct answer |
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| 6066. |
TBATH11. The potential energy U between the atoms in adiatomic molecule as a function of the distancer between the atoms is shown in figure. Theatoms (Oscillations)(1) Attract each other when x is between A and(2) Attract each other when x is between B and(3) Attract each other when x is at B(4) Repel each other when x is at B...th area of cross-section A and |
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Answer» 2) is the correct answer 2) is the right answer of the following |
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| 6067. |
etropia is corrected? Why the C26, prove: H-RRT. 100 J of heat is produced each second in a 40 resistance. Find the potential dicross the resistor.7. Write the laws of refraction nfliul |
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Answer» We know that,Heat = V^2 × t / R100J = V^2 × 1sec. / 4ohmV^2 = 100J × 4ohm / 1sec.V^2 = 400V = ✓400V = 20V |
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| 6068. |
A resistance of 40 olim and dn inductanee of 95.5millihenry are connectd in series lin g 50 cycle/second AC cireuit. The impedauceis very nearly(a) 30 ohm(c) 50 ohnm22 712u267726o40 |
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| 6069. |
.25(A) 2002-90° V (B)200 290°(C) 400 Z-90° V (D) 400 290°The parallel circuit shown in figure is inresonance. For this circuit11, 12Ima Žr =(A)|TR<l mA (B) (1, +1,<mA(C)17, +Ic/<l mA (D) 1, +1c|>l mA |
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Answer» Option-Das in resonancemore current will flow through resistance |
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| 6070. |
2.A body is thrown vertically upwards from thesurface of earth and reaches a maximum height of500 m. The magnitude of initial velocity of the bodyis [Take g 10 m/s](1) 10 m/s(3) 20 m/s12) 100 m/s(4) 200 m/s |
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| 6071. |
f ν_ + Bt' + Ct3 where v is velocity, t is time and A,B and C are constants, then the dimensional formula of BIS(a) [MOLT(c) [M°LOT](b) [ML'T(d) [M°LT-3] |
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| 6072. |
) A magnetic field of 0.025 T exists at right angle toa coil of 5 × 10-3 m2 area with 100 turns. The coil isremoved from the field in 1/10 second. Calculatethe induced e.m.f in the coil. [2-mark, 2011] |
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| 6073. |
. How is food security ensured in India? |
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| 6074. |
7. Two stones are projected with same initial speed but making different angles with the horizontal such that theirhorizontal ranges are equal. If the angle ofprojection of one projectile isheight of other projectile will beΑ)Ηand its height is H, then the maximumB) 2Hc) зн |
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| 6075. |
(A) R=yhin,17. Two stones are projected with the same magnitude of velocity, but making different angles with horizontThe angle of projection of one is t/3 and its maximum height is Y, the maximum height attained by theother stone with as π/6 angle of projection is(A) Y(B) 2 Y(C) 3 Y |
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| 6076. |
127. Two stones are projected with the same speed butmaking different angles with the horizontal. Theirranges are equal. If the angle of projection of oneisand its maximum height is y,, then the123maximum height of the other will be:yi2 (4) i91(1) 3y,(2) 2y,(3)3 |
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Answer» Answer: 4)y1/3Explanation:range=u^2 sin 2 theta /gsin 2(90- theta)=sin (180- 2 theta)=sin 2 thetatherefore angle for 2nd stone is 30 degreey1=u^2 sin ^2(60)/2g y2=u^2 sin ^2(30)/2gy2=y1/3 |
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| 6077. |
Q.22.Howcan it be shown that magnetic field existsaround a wire carrying current ? |
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| 6078. |
cct tte valte of eacn resistance.2. What possible values of resistance one can get by combining two resistances, one of value 2wand the other of value 6W? |
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Answer» are you a mad you are blind you don't see there is written 2w and 6w not ohm |
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| 6079. |
low much energy is given to each coulomb of charge passing through a 6 V battery? (2 |
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| 6080. |
2.low much work is to be done to take 2 C clectric charge from the potential to 6 vto the potential of 12 V ? |
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Answer» thanks |
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| 6081. |
ly on2.J11/S263. The position (x)-time (t) graph for a particle movingalong a straight line is shown in figure. The averagespeed of particle in time interval t = 0 to t = 8 s isx (m)20760.10+stot(s)O'2468 |
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Answer» 8m/s is the average speed of the graph Average speed is 8 m/s |
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| 6082. |
how to make system and units projects |
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Answer» Is it systems and units or systems of units project? |
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| 6083. |
oThe)sf theaxe 2 and y and then scalorĂ Podvet is 6masnitudeos two vectox vecto x Scse 3-then tind the angle between the two vectosS |
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Answer» Like if you find it useful |
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| 6084. |
A student needs spectacles of power 05 D for the correction of hisvision.(i) Name the defect in vision the student is suffering from.(ii) Find the nature and focal length of the corrective lens.(iii) List two causes of this defect. |
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Answer» (i) hypermetropia is defect in vision(ii) focal length=-2, nature -◆ concave lens(iii) elongation of eye ball and weakening of ciliary muscles i) hypermetropia is defect in vision(ii) focal length=-2, nature - concave lens(iii) elongation of eye ball and weakening of ciliary muscles |
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| 6085. |
what is a definition of dimension analysis? |
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Answer» An analysis using the fact that physical quantities added to or equated with each other must be expressed in terms of the same fundamental quantities (such as mass, length, or time) for inferences to be made about the relations between them. |
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| 6086. |
the focal length of a concave mirror, a student focusses a classroomQt27. To determinewindow, a distant tree and the sun on the screen with the help of a concavecasĂŠ will the student get more accurate value of focal length ? Give reason for your cmirror. In which |
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Answer» D ) all these ok. The distance of the window should be considerably large compared to the focal length of the mirror. Other wise: a distant tree and sun should be used |
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| 6087. |
What isfrictional |
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Answer» Friction is the force that opposes the motion of an object. It is a force motion of an object which opposes |
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| 6088. |
62. (a) Define frictional force (or friction) |
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Answer» Frictionis the resistance to motion of one object moving relative to another. It is not a fundamentalforce, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces. Please hit the like button if this helped you |
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| 6089. |
15. Find the ratio of the radii of two nuclei having mass numbers 1 and 27 respectively |
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| 6090. |
Gravitation 5116. If density of a planet is double that of the earthand the radius 1.5 times that of the earth, theacceleration due to gravity on the surface of theplanet is3(1)times that on the surface of the earth(2) 3 times that on the surface of the earth(3) times that on the surface of the earth43 |
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| 6091. |
(5) If the mass of a planet is eight times the mass of the earth and its radius istwice the radlus of the earth, what will be the escape velocity for thatplanet? |
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Answer» Planet mass is 8 times that earthPlanet radius is twice then the radius of earth.Let mass of the Earth = MRadius of the Earth = R Now, we know that The equation to get escape velocity v = √(2 g r)v=√2GM/R If the mass of planet is eight times then escape velocity = 2 √2 times. Escape velocity reduced to by 1/√2. If radius expands twiceHence the net escape velocity will be increase. 2 √2 × (1/√2)= 2 times now.Now it is clear that the escape velocity of that planet will be 2 times from the earth. Escape velocity of the earth = 11.2 km/sEscape velocity of that planet = 2× 11.2= 22.4 km/sec. |
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| 6092. |
If mass of a planet is eight times themass of the earth and its rodius istwice the radius of the earth, whtwill be the escape velocity for thaplanet?Ans : 22.4 km/s |
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Answer» Planet mass is 8 times that earthPlanet radius is twice then the radius of earth.Let mass of the Earth = MRadius of the Earth = R Now, we know that The equation to get escape velocity v = √(2 g r) V = root(2GM)/R If the mass of planet is eight times then escape velocity = 2 √2 times. Escape velocity reduced to by 1/√2. If radius expands twiceHence the net escape velocity will be increase. 2 √2 × (1/√2)= 2 times now.Now it is clear that the escape velocity of that planet will be 2 times from the earth. Escape velocity of the earth = 11.2 km/sEscape velocity of that planet = 2× 11.2= 22.4 km/sec. Hence the escape velocity of that planet will be 22.4 km/s Like my answer if you find it useful! |
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| 6093. |
1.01.7-f gT (Frictional Electricity) |
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Answer» Frictional electricityis another name for triboelectricity -electricity generated byfriction. It's most commonly associated with static electricity. Charge separation often occurs through rolling or sliding contact or collision, usually between different materials. Like my answer if you find it useful! |
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| 6094. |
11. Consider the situation shown in figure (6-B2). Calculate(a) the acceleration of the 1.0 kg blocks, (b) the tensionin the string connecting the 1.0 kg blocks and (c) thetension in the string attached to 0.50 kg.1.0 kg1.0 kgieμ 0.2μ 0.20.5 kg |
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| 6095. |
(b) Which is the third nearest planet to the sun ?(1) Venus* Earth(iii) Mercury |
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Answer» Answer:(ii)EarthExplanation: Here are the planets listed in order of their distance from the Sun: Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,andNeptune. Hence the 3rd planet is Earth earth is the third planet. Before it mercury and venus comes |
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| 6096. |
A 8000 kg engine pulls a train of 5 wagons, each of 2000 kgalong a horizontal track. If the engine exerts a force of 40000and the track offers a friction force of 5000 N. then calculate(a) the net accelerating force and(b) the acceleration of the train(C) TheC-ffdcof wadnら |
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| 6097. |
In which part of the sky can you find Venus if it is visible as an evening star? |
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| 6098. |
in which part of the sky can you fine venus if it is visible as an evening star? |
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Answer» thank you |
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| 6099. |
erify that 3, -1 and 3 are the zeros of the cubic poly(x)-3-5x-11x-3 and verify the relation between ind coefficients.are the zeros of the cubic poly |
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| 6100. |
A particle of mass M is placed at the centre of a uniformspherical shell of equal mass and radius a. Find thegravitational potential at a point P at a distance a l2from the centre. |
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