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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.
| 10051. |
What r galons |
| Answer» type of measurment for weight. | |
| 10052. |
How can direction of instantaneous acceleration be determined? |
| Answer» Subtract the later vector from the earlier, and divide by the infinitesimally small time interval. The resulting vector is the instantaneous acceleration (in the limit that the time interval goes to zero). The direction of that vector is the direction of the acceleration. | |
| 10053. |
When will school start 11th class?? |
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Answer» From 1st July In july month |
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| 10054. |
Define dimensional formula |
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Answer» Thnks Dimensional formula of a physical quantity is an expression showing how and which fundamental or base quantities represent the dimensions of the given physical quantity. |
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| 10055. |
Y=A/2 sin 2 pi lambda t |
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| 10056. |
Please name the book which are required in bio stream so I can buy |
| Answer» NCERT is must | |
| 10057. |
Convert phy node to cgs unit using dimension formula |
| Answer» | |
| 10058. |
The clock used to maintain Indian Standard Time is |
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Answer» Cesium atomic clocks Atomic clock |
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| 10059. |
Working of anteena |
| Answer» | |
| 10060. |
What is meant by capillarity? Derive an expression for the rise of a liquid in a capillary tube. |
| Answer» Capillarity is a physical phenomenon in which liquids flow without the help of gravity. Liquids even rise to a height against gravity, through narrow tubes.Capillary action is due to the phenomenon of Surface tension of liquid as well as adhesive forces between liquid molecules and molecules of the narrow tube. Surface tension is due to cohesive attraction among liquid molecules.Derivation: When a thin (open or closed at the top) tube is inserted into a liquid in a container, the liquid inside the tube rises to a height h above the liquid surface outside. Let the diameter of the tube be D. The density of liquid be ρ. The surface tension of the liquid be S.Weight of liquid column acting downwards = m g W = ρ (πD²/4) h g --(1)The surface on the top liquid inside the capillary tube has a trough (cup) like shape. Assume the angle of contact with the walls be Ф. Surface tension is the contact force per unit length along the circumference of top surface. This force pulls the liquid vertically upwards. Force upwards = S * πD * CosФ ----- (2)=> h = 4 S CosФ / (ρ D g) | |
| 10061. |
How many percent need for bio stream? |
| Answer» Kha se | |
| 10062. |
If the ice on the polar cups of the earth melts, how will it affect the duration of the day? |
| Answer» Well, the north polar ice cap would not have much effect, because it is floating sea ice. The ice caps that would matter are the Antarctica and Greenland ice caps. If they were to melt, days would get slightly longer (and there would be slightly fewer of them in a year). This is because the liquid water would distribute more evenly about the globe rather than all being near the poles, so the Earth\'s moment of inertia would increase. Since the Earth\'s angular momentum will not change, that means that its angular velocity (rate of turning) will decrease.This is analogous to what happens on a playground carousel when a person standing near the axis moves outward: the rotation will slow.This will be a very small change, as the mass of water in the polar ice caps is only a teeny tiny fraction of the total mass of the Earth. | |
| 10063. |
If earth be at one half of its present distance from the sun, how many days will there be in a year? |
| Answer» By Keplers laws of planetary motion, we know that T2 is proportional to R3\xa0Hence, T12 / R13 \xa0= T22 / R23 \xa0\xa0(T2 / T1 )2 = (R2 \xa0/ R1 )3\xa0By the given problem, R2 is half of R1 R2 = R1/ 2Hence,\xa0(T2 / T1 )2 = (R1/ 2 R1 )3 = 1/8Substituting T1 as 1 yearT22 \xa0= 1/8 (1)2 = 1/8 (365 days)2T2 =129days | |
| 10064. |
The temperature of air increases by 4 times, by what factor does the speed of the sound in air vary? |
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| 10065. |
State and prove the conservation of energy for a body falling in an inclined plane |
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| 10066. |
What is the derivative of "sin2x"?????????? (Differential coefficient) |
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| 10067. |
Why speed of light is possible highest speed? |
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| 10068. |
Differentiate sin2x |
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Answer» 2cos2x It\'s 2cos2x Cos2x Cos 2x |
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| 10069. |
Briefly explain parallax method. Please some one answer my question. It\'s urgent? |
| Answer» Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines. Distance between the two viewpoints is called Basis.Similarly, α = d/DWhereα = angular size of the planet (angle subtended by d at earth) and d is the diameter of the planet.αis angle between the direction of the telescope when two diametrically opposite points of the planet are viewed. | |
| 10070. |
When will result release? |
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| 10071. |
Find out dimensions of b and c for which x=bt+cv |
| Answer» B=LT^-1 ......C=TTHESE ARE THE ANSWERS IF X STANDS FOR DISTANCE AND V STANDS FOR VELOCITY. . | |
| 10072. |
How many vactor |
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| 10073. |
Sir which topic is important in ch 2 |
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Answer» Dimensional analysis Mlt and units |
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| 10074. |
Y=cot x%1+cot x |
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| 10075. |
How we can do differentcation in f(x)=y= 2x-3%3x-2 |
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| 10076. |
Derivation of area of triangle with the help of integerations |
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| 10077. |
Soler eclipse |
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| 10078. |
\'Precision describes the limitation of the measuring instrument.\' Justify the statement. |
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| 10079. |
Best books for pcm students class 11th |
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Answer» S l arora for physica hc verma for physics and chemistry and rd sarma for maths Ncert beta |
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| 10080. |
Define scalar |
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Answer» it is a quantity which is described only by its magnitude. it is always positive. sometimes it is negative but it shows that the magnitude is less.(for eg. temperature). its negative sign does not describes the opposite direction unlike vector. It is a quantity which have both magnitude amd direction . Ex force , distance etc It is a physical quantity which have magnitude and sometimes direction.Ex--distance etc. |
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| 10081. |
The unit of power |
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Answer» Watt Watt W The unit of power is watt ...which represent by W Watt W |
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| 10082. |
Limit of variable |
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| 10083. |
d/dx (5xsquare+6)(2xcube+4) |
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Answer» 10x5\xa0+ 12x3\xa0+ 20x2\xa0+ 24 d/dx = 50x4\xa0+\xa036x2\xa0+ 40x 60xcube |
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| 10084. |
Find average Value of sin from 0 to 90 |
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| 10085. |
Solve for x:3x^2+8x+5=0 |
| Answer» X=-1and-5/3 | |
| 10086. |
Differentiation of y=x^2+2x+1 |
| Answer» 2x+2 | |
| 10087. |
Explain ch. 4 |
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| 10088. |
How was the result |
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Answer» Hello.... Kisne thank kiya mujhko Of which class?? |
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| 10089. |
Is coefficient of elasticity and coefficient of rigidity same??? |
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Answer» No bro No I think never |
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| 10090. |
Getting problem in whole concept of paralyx |
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Answer» But it is not important in the sallybus so don\'t take tension Me too |
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| 10091. |
A scientific method |
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| 10092. |
What is differenceation |
| Answer» How one object changes to other with respect to time | |
| 10093. |
Sin 47°is |
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| 10094. |
If the actual value is 10cm then why do we take error 0.1cm??? |
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Answer» Bcoz in every measurement it is to be assume that some error should occur Bcoz error is a mistake so its very very less than the actual value.. |
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| 10095. |
A man covers a distance with speed V1 and V2 for two equal time periods. Find average speed. |
| Answer» V1+v2/2 | |
| 10096. |
Log(x^5-4x^3+x^-1/2+cosx)dx solve |
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| 10097. |
Write down the dimensional formula of G |
| Answer» Think u mean Gravitational force......if so it is[M¹L¹T-²] | |
| 10098. |
Q.Paste a photo of an electricity bill and calculate the energy consumption shown in it. |
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Answer» Bill post karo pehle Bill tho post kiya hi nhi hai tumne |
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| 10099. |
Find magnitude and direcction of given vector 3i-4j |
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| 10100. |
Best reference book for practical |
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Answer» Saraswati Elite |
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