Here we have a given Class 12 Physics Important Questions for Maharashtra Board HSC Examination 2023. Every students want to score good marks in Class 12 Board Exam,but number of students don't know how to score good marks. Dear students, given following questions had been asked in earlier HSC Board Examinations. From this post, you will know which type of questions had been asked in earlier Board Exams and same questions or same type of questions will be asked in your upcoming examination. If you study all these questions, you will get very good marks in your board examinations, Because so many questions from the following given questions will be asked in your upcoming examination.Therefore go through our Class 12 Physics Important Questions which are given in chapter-wise manner and simply try to solve these questions to score very good marks in Physics and obviously, you will! Best wishes to all dear students for your upcoming Maharashtra State Board Exam 2023.

यहां हमारे पास महाराष्ट्र बोर्ड HSC परीक्षा 2023 के लिए कक्षा 12वीं के Physics के महत्वपूर्ण प्रश्न दिए गए हैं। प्रत्येक छात्र कक्षा 12वीं की बोर्ड परीक्षा में अच्छे अंक प्राप्त करना चाहते हैं, लेकिन कई छात्र यह नहीं जानते कि अच्छे अंक कैसे प्राप्त करें। प्रिय छात्रों, नीचे दिए गए प्रश्न पिछले एचएससी बोर्ड परीक्षाओं में पूछे गए थे। इस पोस्ट से आप जानेंगे कि पिछली बोर्ड परीक्षाओं में किस प्रकार के प्रश्न पूछे गए थे और आपकी आगामी परीक्षा में भी इसी प्रकार के प्रश्न पूछे जाएंगे। यदि आप इन सभी प्रश्नों का अध्ययन करते हैं, तो आप अपनी बोर्ड परीक्षाओं में बहुत अच्छे अंक प्राप्त करेंगे, क्योंकि निम्नलिखित दिए गए प्रश्नों में से बहुत सारे प्रश्न आपकी आगामी परीक्षा में पूछे जाएंगे। इसलिए हमारे कक्षा 12 के भौतिकी के महत्वपूर्ण प्रश्नों को देखें जो अध्याय में दिए गए हैं | फिजिक्स में बहुत अच्छे अंक प्राप्त करने के लिए इन प्रश्नों को बुद्धिमान तरीके से हल करने का प्रयास करें और जाहिर है, आप करेंगे! सभी प्रिय छात्रों को आपकी आगामी महाराष्ट्र राज्य बोर्ड परीक्षा 2023 के लिए शुभकामनाएं।

Class 12 Physics Important Questions | Chapter 2 Mechanical Properties Of Fluids

• Explain surface tension on the basis of molecular theory. (March 2008)

• Define the terms:

(a) Sphere of influence

(b) Angle of contact. (March 2008)

• Define surface tension. Explain the effect of impurity on surface tension. (Oct 2008)

• Define and explain surface tension. Write down its unit and dimension. (March 2009)

• Draw a neat diagram for the rise of liquid in a capillary tube showing the components of a

surface tension T. (March 2010)

• Explain the formation of concave and convex surface of liquid on the basis of molecular forces. (March 2011)

• What is capillarity? State any two illustrations of capillarity. (March 2011)

• Define angle of contact. State its any two characteristics. (Oct 2011)

• Explain why the angle of contact is acute for kerosene glass pair and is obtuse for mercury glass pair. (March 2012)

• What is surface energy? Obtain the relation between surface tension and surface energy. (March 2013)

• Derive the relation between surface tension and surface energy per unit area. (March 2013)

• A soap bubble of radius 12 cm is blown. Surface tension of soap solution is 30 dyne/cm. Calculate the work done in blowing the soap bubble. (Oct 2013)

• Show that the surface tension of a liquid is numerically equal to the surface energy per unit area. (Oct 2013)

• Explain the rise of liquid in the capillary on the basis of pressure difference. (March 2014)

• Calculate the density of paraffin oil, if a glass capillary of diameter 0.25 mm dipped in paraffin oil of the surface tension 0.0245 N/m rises to a height of 4 cm. (Angle of contact of paraffin oil with glass is 28° and g = 9.8 m/s2). (March 2014)

• Define the angle of contact and state its any two characteristics. (Oct 2014)

• Water rises to a height 3.2 cm in a glass capillary tube. Find the height to which the same water will rise in another glass capillary having half area of cross section. (Oct 2014)

Also read : Class 12 Chemistry Important Questions

• Derive an expression for excess pressure inside a drop of liquid. (March 2015)

• Draw a neat labelled diagram showing forces acting on the meniscus of water in a capillary tube. (Oct 2015)

• A raindrop of diameter 4 mm is about to fall on the ground. Calculate the pressure inside the raindrop. (surface tension of water T = 0.072 N/m, atmospheric pressure = 1.013 X 105 N/m2) (Oct 2015)

• Derive Laplace's law for spherical membrane of bubble due to surface tension. (March 2016)

• The energy of the free surface of a liquid drop is 5π times the surface tension of the liquid. Find the diameter of the drop in C.G.S. system. (March 2016)

• Draw a neat labelled diagram of rise of liquid in capillary tube showing different components of tension. (July 2016)

• The total free surface energy of a liquid drop is π√2 times the surface tension of the liquid. Calculate the diameter of the drop in S.I. unit. (July 2016)

• The total energy of free surtace of a liquid drop is 2π times the surface tension of the liquid. What is the diameter of the drop? (Assume all terms in SI unit). (March 2017)

• Draw a neat, labelled diagram for a liquid surface in contact with a solid, when the angle of contact is acute. (March 2017)

• Define surface tension and surface energy. (July 2017)

• Two soap bubbles have radii in the ratio 4:3. What is the ratio of work done to blow these bubbles? (July 2017)

• Derive Laplace's law for a spherical membrane. (March 2018)

• Calculate the work done in increasing the radius of a soap bubble in air from 1 cm to 2 cm. The surface tension of soap solution is 30 dyne/cm. (π = 3.142) (March 2018)

• What is capillarity? Give any two applications of capillarity. (July 2018)

• A horizontal circular loop of a wire of radius 0.02 m is lowered into crude oil and a film is formed. The force due to the surface tension of the liquid is 0.0113 N. Calculate the surface tension of the crude oil. (π = 3.142) (July 2018)

• A rod of length 4 cm is movable on a rectangular frame of wire. A film is formed in the frame. A force of 3.2 x 10-3 N is applied to the rod for its equilibrium. Find the surface tension of the liquid. (July 2019)

• Obtain an expression for the rise of a liquid in a capillary tube. (March 2019)

• What is capilarity? Give any two applications of capilarity. (March 2020)

• Calculate the work done in blowing a soap bubble of radius 0.1 m. (Surface tension of soap solution = 30 dyne/cm) (March 2020)

Also read : Class 12 Biology Important Questions

👉 Students are suggested to go through our Class 12 Physics Important Questions to score more in your upcoming 2023 Board Examination. 👇👇