tbse.in : Class XI Physics Question Paper Sample Tripura Board Of Secondary Education
Board : Tripura Board Of Secondary Education
Exam : Class XI
Subject : Physics
Document Type : Sample Question Paper
Website : tbse.nic.in
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/7281-Physics.pdf
Physics Question Paper :
Class – XI :
Time : 3 Hrs.
Maximum Marks : 70
Related : Tripura Board Of Secondary Education Class XI History Question Paper : www.pdfquestion.in/7289.html
General Instruction :
1. All Questions are Conpulsory.
2. There is no overall choice. However, there is an internal choice in one question of 2 marks weightage, one question of 3 marks and all the question of 5 marks.
GROUP – A :
1) (Name two physical quantities having the same dimension)
2) (Draw the velocity – time graph when a body is thrown vertically upward)
3)(A man falls freely standing over a weighing machine. What will be the weight shown by the machine?)
4) (What is the angle of friction between two surfaces in contact if the co-efficient of static friction is )
5) SA lighter body and a heavy body have equal momentum, which one has the greater kinetic energy ?)
6) (Write the relation between torque, angular acceleration and moment of inertia.)
7) (What is the epoch of the simple harmonic motion represented by Y = 10 Sin ( )
8) (What is the ratio of fundamental frequencies of one closed pipe and one open pipe of equal length)
Group-B :
9) Show that Newton’s first law of motion is the special case of Newton’s second law of motion)
OR
(State the conditions for equilibrium of a body under the action of three forces)
OR
(The moment of inertia of a plane thin circular disc of mass m and radius r about an axis passing through its centre perpendicular to its plane is mr2. Find the moment of intertia about its diameter)
12) (Find the relation between acceleration due to gravity and mean density of the earth)
13) A The stress – strain graphs of two different substances A and B are shown.
Answer the following questions with reason.
i) Which substance has more value of Young’s modulous?
ii) Which substance is more ductile?
14)(State the Zero-th law of Thermodynamics. Explain the concept of temperature from this law.)
15)(Explain the temperature of gas on the basis of kinetic theory of gas.)
Group – C :
16) (A physical quantity P = , where a, b, c and d are four physical quantities. The percentage of error in measurements of a, b, c, d are 1%, 3%, 4% and 2% respectively. What is the percentage of error in measurement of P ?
18) State and prove Impulse – Momentum Theorem. A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of 12 m/s. If the mass of ball is 0.15 kg. Determine the impulse imparted.
19) Obtain the expression for the speed limit of a car moving on a banked circular road.
20) State and prove work – energy theorem.
21) Define angular momentum. Prove that the rate of change of angular momentum. of a particle is equal to the torque acting on it.
OR
Obtain an expression for kinetic energy of rotation of a body of angular velocity ‘w’ and hence define moment of inertia.
22) What is a geostationary satellite? Derive the expression for height of a geostationay satellite.
23) What is Tripple point?
Find the specific heat of a body, when 0.2 kg of the body at 1000 C is dropped into 0.5 kg of water at 100 C & the resulting temperate is 160 C, given specific heat of water is 4.2 x 103 J/Kg/ 0C
What is Heat Engine? Explain whether its efficiency can be 100%. What do you mean by Degree of freedom of a kinetic system ? Derive its relation with the ratio of two specific heats of gases.
26) Show that total energy is conserved in simple harmonic motion.
27) (Derive an expression for the centripetal acceleration of a body executing uniform circular motion. Why do the vertically falling rain drops appear to be inclined to a person sitting inside a moving car?)
OR
(Show that the path of a projective is parabolic. With reference to projectile obtain relations for the following :
i) Maximum height.
ii) Time of flight
iii) Horizontal range.)
28) (State and prove Bernoulli’s theorem. Write its limitations.) 3 + 2
OR
(Derive an expression for the height attained due to rise of liquid in a capillary tube. What happens when the length of a capillary tube is less than the height up to which a liquid may rise in it ?)
29) (What is called beat ? Why is the difference between frequencies of waves less than 10 for hearing beats. In a gaseous medium 6 beats are produced due to superposition of two waves. If the wave lengths of the two waves are 50 cm and 50.5 cm respectively, determine the velocity of sound in that medium.)
OR
(State the laws of transverse vibration of a stressed string. A stretched wire emits a fundamental tone of 256 Hz, Keeping the tension unchanged if the length of the wire is decreased by 10 cm, the frequency of emitted fundamental tone is 320 Hz. What was the initial length of the wire ?)