test paper for class 11th

 test paper for class 11th

this test paper specially design for the students of class 11th( physics) . this question paper covers questions from chapter 1st to chapter 6th . student can check there preparation using this test paper . this question paper also contain very important questions , so  students must try to solve these question  test paper for class 11th.

projectile

                                                        Test -11th

M.M.-30                                                                                                      TIME-1:00  

All questions are compulsory , section- A contains 5 questions each carry 1 mark, section- B contains 7 questions each carry 2 marks ,section- C contains  12 questions each carry 3 marks , section-D  contains 3 questions each carry 5 marks.

  SECTION (A )                                                                                                                               

  1. The volume of an object as a function of time is calculated by where t is time in seconds and v is in cubic meter. Determine the dimensions of constants A and B.

 

  1. A stone is thrown such that its horizontal range is 4 times the maximum height. Find the angle of projection.

 

  1. A cricket ball of mass 150 g has an initial velocity m/s and final velocity  m/s after being hit. Calculate the change in momentum.
  2. What happens to coefficient of friction when the weight of a body is doubled ?
  3. If a man in an elevator drops his briefcase but it does not fall to the floor, what can you conclude about the elevator’s motion?

 

SECTION-B

 

  1. When a particle rotates in a circle, a central force acts on it directed towards the center of rotation. Why does this force does no work on the particle?
  2. A cubical block rests on a plane of coefficient of friction √3. The angle through which the plane be inclined to the horizontal so that the block just slides down will be what? Also define angle of repose.
  3. Show that the path followed by the particle given angular projection is parabolic.
  4. If a projectile is projected with same initial velocity at two different angles α and β with the horizontal , if horizontal distance covered in both the cases are same thin find the ratio of there maximum height attained in both cases.
  1. The block of mass M moving on the frictionless horizontal surface collides with the spring of spring constant k and compress it by length L. Calculate the maximum momentum of the block after collision.               
  1. Explain impulse-momentum theorem. Give some practical applications of impulse.
  2. State and explain work energy principle using calculus method.

         SECTION-C

  1. The displacement of a body is proportional to t3, where t is time elapsed , then what will be the nature of velocity-time and acceleration – time graph. Also plot the position time graph for the uniform motion of an object along a straight line , if (i) x0=positive , v=negative and magnitude of velocity is constant (ii) both x0 and v are negative  and magnitude of velocity is constant.
  1. Explain Parallax method, how it is used to find the radius of the planet ?
  1. The escape velocity v of a body depends on the (i) acceleration due to gravity,(ii)the radius R of the planet. Establish dimensionally the relation for the escape velocity. Also write the dimension of gravitational constant G.
  1. Define acceleration due to gravity. Obtain relations to show how the value of ’g’ changes with (i) altitude , (ii) depth .

 15. state and derive Kepler’s laws of area and periods for circular orbits.

  1. A man can jump 1.5 m on earth . calculate the height he may be abled to jump on a planet whose density is one quarter that of earth and whose radius is one third that of earth.

 19.A uniform circular disc of radius R is rolling on a horizontal surface . Determine the tangential velocity (i) at the upper most point ,(ii)at the center of mass and (iii) at the point of contact. 

  1. A body is moving with uniform acceleration , its velocity after 5 sec is 25m/s and after 8 sec is 34m/s. calculate distance it cover in 15th sec .
  1. A pump on the ground floor of a building can pump up water to fill a tank of volume 30 m3 in 15 min. If the tank is 40 m above the ground , how much electric power is consumed  by the pump , the efficiency of the pump is 30%.

 22.Define spring constant , write the characteristics of the force during the elongation of the spring . Derive the relation for the potential energy stored when it is elongated by the distance X .

  1. (i) A light and heavy body have same kinetic energy , which of the two have more momentum and why? (ii) If kinetic energy of a body is increased by 300% , find the % increase in its momentum.
  1. Two blocks of mass 2kg and 5kg are connected by a light and inextensible string passing over a frictionless pulley . the block of mass 2 kg is free to slide on a surface inclined at an angle of 300 with the horizontal whereas 5 kg block hangs freely . find the acceleration and tension in the string.

 SECTION-D

  1. What do you mean by Banking of roads. What is the need of banking a circular road. Discuss the motion of car on banked circular road(with friction).

A vehicle running with speed 72 km/hr applies brakes producing a retardation of 3 m/s2 while taking a turn of radius 100 m. Find the acceleration.

  1. State and prove the theorem of (i) parallel axis and , (ii) perpendicular axis . Also  find the moment of inertia of a circular disc about the axis perpendicular to the plane and passing through the center .
  1. How does a perfectly elastic collision is different from perfectly inelastic collision ? Two particles of mass m and M having velocities u1 and ­u­2 respectively make an head on collision .Derive the relation for their final velocities . discuss the following special cases (i)m=M (ii) m>M and  u2=0

 

 

 

 

 

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