HAYATH’S ACADEMY (Turning potential into performance)
H.NO:17-1-81/C, Santosh nagar colony, Saidabad, Hyderabad, Telangana, India 500059
Contact No.
9700413618,9032584808,9700220493
INTERMEDIATE
FIRST YEAR PHYSICS (2015-16)
Long
Answer Questions
1.Develop the notion of work and kinetic energy and
show that it lead to work theorem?
2. What are collisions? Explain the possible type of
collision? Develop the theory of one dimensional elastic collision?
3. State and
prove law of conservation of energy in case of a freely falling body?
4. Define simple harmonic motion show that the motion
of projection of a particle performing uniform circular motion on any diameter
is simple harmonic?
5. Show is
the motion of a simple pendulum is simple harmonic and hence drive an equation
for its time period what is second pendulum?
6. Derive the equation for the kinetic energy and
potential energy of a simple pendulum or simple harmonic oscillator and show
that the total energy of a particle in simple harmonic motion is constant at
any point on its path?
7. Explain reversible and irreversible process
describe the working of car not engine obtain an expression for the efficiency?
8. State Second law of thermodynamics. How is heat
engine different from a refrigerator?
Short Question Answers
*1. Show that the maximum height and range of a
projectile are 
and 
respective.where the terms have their regular
meanings.
and respective.where the terms have their regular
meanings.
2. State parallelogram law of vectors derive an
expression for the magnitude and direction of the resultant vector?
3. Define unit vector, null vector and position
vector.
4. Show that the trajectory of an object thrown at
the certain angle with the horizontal is a parabola?
5. If| ā +b |=| ā-b| prove that the angle between a
and b is 900 ?
6. Show that the maximum height reached by a
projectile launched at an angle of 
is one quarter of its range.
is one quarter of its range.
7. What is relative motion.Explain it?
*8. Why are shock absorbers used in motion cycles
and cars?
9. Explain advantages and disadvantages of friction?
10. Mention
the method used to decrease friction?
11. State Newton’s second law of motion. Hence
derive the equation f=ma from it?
12. Define angle of friction and angle of repose show
that angle of friction is equal to angle of repose for a rough inclined plane?
*13. Distinguish between centre of mass and centre
of gravity?
*14. Define vector product. Explain the properties
of vector product with two examples.
*15. Define angular velocity and Derive 
16. Find the torque of a force 7i+3j-5k about the origin. The
force acts on a particle whose position vector is i-j+k
*17. State and prove parallel axes theorem?
*18. State and prove the perpendicular axes theorem?
19. State and kepler’s laws of planetary motion?
20. Derive the relation between acceleration due to
gravity “g” change of the same values of height and depth?
21. What is orbital velocity? Obtain an expression
for it?
*22. What is escape velocity? Obtain an expression
for it?
23. What is a geostationary satellite? State its
uses?
24. Define HOOK’S law of elasticity. Proportionality
limit permanent set and breaking stress?
25. Define strain energy and derive the equation for
the same?
*26. Describe the behavior of a wire under gradually
increasing load?
27. Define
Stress and explain different types of stress.
28. Define Strain and explain different types of strain.
*29. Pendulum clocks generally go fast in winter and
slow in summer. Why?
30. In what way is the anomalous behavior of water
advantageous to aquatic animals?
31.Two identical rectangular strips, one of copper
and other of steel are riveted together to form a compound bar. What will
happen on heating?
32. Explain conduction, convection and radiation
with examples.
33. Write a short notes on Quasi-Static process.
34. Explain Qualitatively the working of a heat
engine.
35. What is the ratio of r.m.s speed of oxygen and hydrogen molecules
at the same temperature?
36. Four molecules of a gas has speeds 1,2,3 and 4
kmps. Find the r.m.ms speed of the gas molecule.
37. A man walks on a straight road from his home to
a market 2.5km away with a speed of 5kmph.Finding the market closed he
instantly turns and walk back home with a speed of 7.5kmph.What is the
(a)Magnitude of average velocity and (b) Average speed of man over the time
interval 0 to 50 min
38. A car travels the first third of a distance with
a speed of 10kmph, the second third at 20kmph and the last third at 60kmph.What
is its mean speed over the entire distance.
39.A bullet moving with a speed of 150m/s strikes a
tree and penetrates 3.5cm before stopping. What is the magnitude of its
retardation in the tree and the time taken for it to stop after striking the
tree.
40. A stone is dropped from a height of a 300m and
at the same another stone is projected vertically upwards with a velocity of
100m/s. Find when and where the two stones meet.
