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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.
| 9901. |
What happence to coefficent of friction when weight of a body is haved? |
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| 9902. |
State Bernaulli \'s theorem..?? |
| Answer» According to bernoulli\'s theoremit states that "the total energy of incompressible,non-viscous fluid flowing without any friction from one point to another point in the streamlined motion remains constant throughout the displacement". | |
| 9903. |
Plot a graph between gravitational force and square of distance between two masses |
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| 9904. |
What do you mean by quasistatic process..?? |
| Answer» In thermodynamics, a quasi static process is a thermodynamic process that happens slowly enough for a system to remain in internal equlibrium. Any reversible process is quasi static process. However a quasi static process involving entropy production are not reversible. | |
| 9905. |
What is rotational analogue of force? Give it s.i unit. |
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Answer» SI unit kg rad/sec2 Torque is analogous of force |
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| 9906. |
Main ek our pic nhi dekh skta ky |
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| 9907. |
What is wave function? |
| Answer» minimum force required to eject electrons from the metal body is called wave function. | |
| 9908. |
How a right angle prism deviate a ray through 90°? |
| Answer» We have mention limitations of total internal effect | |
| 9909. |
Sample paper 2018-19 set a |
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| 9910. |
Postulates of kinetic theory of gases? |
| Answer» All molecules are identical, total k. E is conserved, distance between them is less, molecules are in random motion | |
| 9911. |
Water is more elastic than air why |
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Answer» Because the surface tension of water is greater than the surface tension of air Yes i think ajey is right I think due to surface tension |
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| 9912. |
Hiw to prepare for cbse exam well in class 12 |
| Answer» Just go through ncert completely | |
| 9913. |
What is projectile or trajectory |
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Answer» An object is thrown by initial velocity and move under gravity is called Projectile A body which projected not in vertical direction or in horizontal direction called projectile |
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| 9914. |
Find the coefficient of volume expansion for an ideal gas at constant pressure |
| Answer» Gamma | |
| 9915. |
Define elastomer |
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Answer» Substance which have large value of strain for small stress likewise Aorta. The elastic substances that can be subjected to large strain without breaking are called elastomers.orThe substance which can be stretched to large values of strain are called elastomers, e.g., elastic tissue of aorta, the largest artery carrying blood from the heart. |
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| 9916. |
Hey guys if you have done with your physics practical send me a few questions asked please. |
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Answer» In the practical examination along with experiments you have to face viva voce from the internal / external examiner. It is just to know your depth of knowledge and understanding of the subject. Based on your performance you will be credited with the deserving score. Do prepare well. The possible questions are as under. Please remember these questions will be in continuation to your response to the examiner\'s queries:1) Why are the resistance used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,5000 etc?2) Why wire is double folded in resistance box?3) Name the physical quantities to be kept constant for Ohm\'s law to be true?4) State the principle of a potentiometer?5) How can we increase the sensitivity of a potentiometer?6) Define figure of merit of a galvanometer? Which has more resistance, a galvanometer or a millimeter?7) How does an LED emit light?8) What is the difference between an ordinary diode and an LED?9) Define principle axis of a convex lens?10) What happens to the focal length of a concave mirror if it is immersed in water?11) What are the factors affecting the internal resistance of a cell?12) What are the differences between primary and secondary cell?13) Why can\'t we use a dry cell for starting a car?14) Define spherical aberration and draw diagram to show it in case of a concave mirror?15) What is parallax? How is it removed?16) Define dispersion of light, give its cause?17) Show dispersion of white light into seven colors?18) Define lateral displacements and give the factor on which it depends?19) Define critical angle and deduce the relstion between refractive index and critical angle?20) Explain U-V graph in case of image formation in a convex lens?21) Distinguish between primary and secondary cell, give two differences?22) How does rheostat act as a variable resistor, potential divider? Illustrate with a diagram?23) What is a non inductive coil? Give one special feature of non inductive cool?24) Draw a neat and label diagram of Leclanche cell?25) Write chemical equation in Daniel cell?26) Why is the emf of auxiliary battery greater than the emf to be measured?27) Why are standard resistances made up of constantan and Manganin?28) Define figure of merit and give its SI unit? Thanks anisha and divyansh. Your teacher will ask you questions related to practical given to you for your written practical.... Questions like least count, pitch, refractive index, dispersion, scattering, and remember learn all the formulas of the practicals given in practical book.... Also questions will be asked from your whole physics syllabus... Like work energy theorem, stationery waves, dopler effect, newton\'s all three laws, capillary action and gravitational law.... And much more formulas...best of luck kriti... ???? Which types of waves are there in sono meter Answer |
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| 9917. |
Today all my class 11th exam are ended? |
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Answer» Result last march Not too bad not too good but alas it 11th Happy holidays !!? How was all papers dude .when is your result now. |
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| 9918. |
To proove cp-cv=R |
| Answer» It is Mayer\'s equation.Derivation:ΔU = ΔQ + ΔW ΔU = Cv ΔT (At pressure is constant)ΔQ = Cp ΔT (At pressure is constant)ΔW = -P ΔV (Negative since the calculation been complete)Pv = RT (1 mole of gas)Because of pressure is constant, R is also constantChange in V will make change in TPΔV = R ΔTCv ΔT = CpΔT - RΔTDivided by ΔTCv = Cp - RCp - Cv = R | |
| 9919. |
Derive the lens maker\'s formula |
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| 9920. |
Ncert examples |
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| 9921. |
An open pipe makes a good instrument in comparison to a closed pipe. Why |
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| 9922. |
last year final question and answer of physics |
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| 9923. |
What is Bernoulli\'s theorem prove it ? |
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Answer» or we can say sum of pressue head , gravitional head and velocity head is constant provided that there is only one source and sink it states that sum of pressure energy ,kinetic energy and potential energy for a given mass is constant P1>P2 T1>T2 V1>V2 |
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| 9924. |
Difference Between rigid and non rigid body? |
| Answer» When force is applied on a rigid body, there will be no change in the shape or size of the rigid body. In case of a non rigid body the force will distort shape and/or size of the body. | |
| 9925. |
Expression for excess of pressure inside or outside the bubble |
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| 9926. |
3 difference b/w streamline and laminar flow |
| Answer» Streamline flow: : The flow of a fluid is said to be streamline (also known as steady flow or laminar flow), if every particle of the fluid follows exactly the path of its preceding particle and has the same velocity as that of its preceding particle when crossing a fixed point of reference.Turbulent flow: The flow of a fluid is said to be turbulent or disorderly, if its velocity is greater than its critical velocity. Critical velocity of a fluid is that velocity up to which the fluid flow is streamlined and above which its flow becomes turbulent. When the velocity of a fluid exceeds the critical velocity, the paths and velocities of the fluid particles begin to change continuously and haphazardly. The flow loses all its orderliness and is called turbulent flow. | |
| 9927. |
Why apple fall down the earth , does gravity is inside core of earth ? |
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| 9928. |
Which physical quantity has the unit Watt/meter×K? |
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Answer» Coefficient of thermal conductivity dQ/dt = KA(∆T)/LK = watt /metre.kelvin Thermal conductivity |
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| 9929. |
Work energy theorem?? |
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Answer» W.D. = change in K.E. The work-energy theorem states that the work done by all forces acting on a particle equals the change in the particle\'s kinetic energy. According to work energy theorem, work and energy are equivalent to each other. |
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| 9930. |
Show that total energy of a body executing SHM is independent of time? |
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| 9931. |
Derivations of thermodynamics |
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| 9932. |
Droppler effect |
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Answer» F\'= F(v+-v0/v+-vs) When there is relative motion between source and observer the apparent frequency observed is different from original frequency |
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| 9933. |
What is thd S.I unit of gravitational constant |
| Answer» n-m^2/kg^2 | |
| 9934. |
How to find the path follered by projectile ia parabolis |
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| 9935. |
How to prepare AIIMS exam? ? |
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| 9936. |
pascl law |
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Answer» In equilibrium condition of liquid pressure is same at all poiny Pressure exerts on wall is equal in all directions Pollution it states that the increase in pressure at a point in the enclosed liquid in equilibrium is transmitted equally in all directions in liquid and to the Walls of the container . |
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| 9937. |
How to numerical solve mimimum time |
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| 9938. |
Daltons law of partial pressure |
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Answer» according to dalton law of partial preesure the total pressure exerted by a mixuture of non reactive gas is equal to sum of the individual partial preesure under the same condition of temperatures and pressure. It states that total pressure exercterd by mixture of 2 or more than 2 ideal,non reactive gases is equal to sum of the partial pressure excerted by each gas if it occupies same volume at same temp |
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| 9939. |
Newton\'s law of cooling derivation |
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Answer» Rate of cooling depends on temperature difference Rate of cooling depends on temperature |
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| 9940. |
Newton\'s law of cooling full derivation |
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| 9941. |
Derive the expression for maximum relative error in the product of two measured quantity a and b |
| Answer» ∆Z/Z=∆A/A+∆B/B | |
| 9942. |
What should we actually do after the exam ends??? |
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Answer» Masti? bahi bus Vele hai... abb 1 months ke liye... ? |
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| 9943. |
what is the angular velocity of the hour hand of clock |
| Answer» π/21600 rad/sec or π/6 rad/hour | |
| 9944. |
definition of conservative force |
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Answer» Thnx yrrr.... those force in which the object depends upon the initial and final position .work done in a closed path is always equal to zero .ex gravitational electosatics force etc |
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| 9945. |
Derive the position vector of centre of mass |
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Answer» What a answer ??? मंगलवार को भारत ने पाक के ऊपर सर्जिकल स्ट्राइक कर दी जिसके बाद दोनों देशों के बीच काफी तनाव तनाव हो गया है इस तनाव के बावजूद भी पाकिस्तान को भारत के वीर सपूत विंग कमांडर अभिनंदन को मजह 59 घंटों के बाद ही भारत को सौंपना ही पड़ा। शुक्रवार रात 9.21 बजे वतन लौटने के साथ ही अभिनंदन के शौर्य की कहानी भारतीय सेना के इतिहास में अमर हो गई। अभिनंदन जब लौटे तो उनके चेहरे और हावभाव को देखकर साफ दिख रहा था कि उन्होंने पाकिस्तान को भारत के साहस का परिचय बखूबी करा दिया है। वह नीला कोट, ग्रे पैंट और सफेद शर्ट पहने हुए थे। |
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| 9946. |
I want all chapters marks weight age |
| Answer» Units And marks Given Below :-I.- Physical World & Measurement : 03II.- Kinematics : 10III.- Laws of Motion : 10IV.- Work, Energy & Power : 06V.- Motion of System of particles & Rigid Body : 06VI.- Gravitation : 05VII- Properties of Bulk Matter : 10VIII -Thermodynamics : 05XI -Behaviour of Perfect Gas & Kinetic Theory of gases: 05 X- Oscillations & Waves : 10Total : 70 | |
| 9947. |
What is the geometrical meaning of dot product and cross product of vectors? |
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| 9948. |
State the type of motions in case of a nail being drilled in a wall with a wrench. |
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| 9949. |
Explain kinetic interpretation of temperature? |
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| 9950. |
State and prove the Work energy theorem |
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Answer» Work done by all force equal to Change KE According to Work - Energy theorem, work done by a net force in displacing a body is equal to change in kinetic energy of the body.s here is the displacement.Work done is given byv2 – u2 = 2as=> as = ½ (v2 – u2 )F = maW = Fs=> W = mas=> W = ½m (v2 – u2 )Work done increases the KE of the bodyKE = W=> KE = ½m (v2 – u2 ) |
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