Guess Paper Physics Class 11

Very Important Multiple Choice Questions (MCQs), Short Questions and Long Questions in the form of guess paper physics class 11 written by Professor Mr. Adan Haider Suib. These notes are very helpful in the preparation of Physics for the students of the intermediate and these are according to the paper patterns of all Punjab boards.

• Our comprehensive Guess Paper Physics Class 11 will ensure you're fully prepared for your exams.
• Most Important multiple choice questions of Physics class 11th repeated from previous 20 past papers of all the Punjab Boards. 
• Most Important Short Questions of Physics class 11th repeated from previous 20 past papers of all the Punjab Boards. 
• Most Important Long Questions of Physics class 11th repeated from previous 20 past papers of all the Punjab Boards. 
• Give the draw backs to use the period of simple pendulum as a time standard.
• Calculate the distance covered by the light in free space in one year
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• What are supplementary units? Define only one unit.
• Differentiate between base units and derived units.
• Define light year and what are the unit and dimensions of light year? 6. Show that 1 rad = 67.3○
• How many micro seconds in one year?
• Why do we find it useful to have two units for the amount of substance, the kilogram and the mole?
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• Define impulse and show how it is related to linear momentum?
• Find the velocities of two elastically colliding 35 bodies when m1 = m2 after collision.
• Differentiate between elastic and inelastic collision. Explain how would a bouncing ball behave in each case?
• Briefly describe the force due to water flow.
• When rocket re-enters the atmosphere, its nose becomes very hot, why?
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• What is ballistic flight? Explain.
• Is the range of projectile same for both angles of projectile of 30° and 60°? If your answer is yes then prove it?
• Water is projected from two rubber pipes at the same speed v from one at 30° and from other at 60°. Why are the ranges equal? What is trajectory? Explain briefly.
• Why fog droplets appear to be suspended in air?
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• Explain the difference between laminar flow and turbulent flow.
• State Bernoulli’s relation for a liquid in motion and describe some of its applications.
• A person is standing near a fast moving train. Is there any danger that he will fall towards it?
• A girl drops a cup from a certain height, which breaks into pieces. What energy changes are involved?
• When a rocket re-enters the atmosphere, its nose cone becomes very hot. Where does this heat energy come from?
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• State the direction of the following vectors in simple situations, angular momentum and angular velocity.
• Why mud flies off the tyre of a moving bicycle, in what direction does it fly?
• Why does a diver change his body positions before and after diving in the pool?
• Name two characteristics of simple harmonic motion.
• Does frequency depends on amplitude for harmonic oscillators?
• What is meant by angular momentum? State law of conservation of angular momentum.
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• Why does the coasting rotating system slow down as some material object is added to the system during rotations?
• Why is the axis of rotation of Earth remains fixed in one direction with respect to the universe around it?
• A disc and hoop start moving down from the top of inclined plane at the same time. Which one will be the moving faster on reaching the ground?
• A disc is rolling down on an inclined plane. Find the rotation for the speed of disc at its bottom.
• State the practical use of rotational K.E by fly wheels.
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• What are the differences between real and apparent weight?
• A lift is ascending with the acceleration “a”. Derives the expression for apparent weight. Time body of mass “m” in it
• What is path difference? What should be the path difference for constructive and destructive interference?
• Is it possible to convert internal energy into mechanical energy? Explain with an example.
• Is it possible to construct a heat engine that will not expel heat into the atmosphere?
• Can the mechanical energy be converted completely into heat energy? If so give an example.
• Does entropy of a system increase or decrease due to friction?
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• A typical diffraction grating has 5000 times per centimeter. What will be the grating element of this diffraction grating in meters?
• What is diffraction grating and grating element?
• Write down two methods by which we can obtain plane-polarized beam of light from unpolarized light.
• Why diffraction grating cannot be used for X-rays diffraction?
• Write the names of any four processes to obtain plane polarized beam of light from polarized light. 
• What is difference between multimode step index and multimode graded index fibre?
• Write down the three major components on which a fibre otpic communication system consists.
• An astronomical telescope of long focal length and large aperture is considered to be a good telescope. Why?
• Define Refractive index of a medium. Write its two mathematical forms.
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• Write down the main postulates of kinetic theory of gases.
• Can the mechanical energy be converted completely into heat energy? If so give an example.
• Derive Boyle’s law from the expression for pressure of gas.
• Define Charles law how it is derived from kinetic theory of gases
• Explain bicycle pump as an example of first law of thermodynamics.
• Define molar specific heat of a gas at constant volume and molar specific heat at constant pressure.
• Solid line represents adiabatic and dotted line isothermal process. In which process more work is done? 
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