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Guess paper proof
A
18 – 03 – 2015
Part – III
PHYSICS, Paper – I
(English version)
Time: 3 hours
Max. Marks: 60
Section – A
Very short answer types questions.
i)
ii)
Answer all questions
Each questions carries two marks
1. What is the contribution of S. Chandra Sekhar to physics? (plus academy guess q’s,
Q.No:3 )
2. Distinguish between accuracy and precision. (plus academy guess q’s, Q.No:10 )
⃗⃗⃗⃗⃗⃗⃗ and Q = ⃗⃗⃗
⃗⃗⃗⃗ find the magnitude of P + Q. (plus
⃗⃗⃗
⃗⃗⃗
3. If p = ⃗⃗⃗
academy guess q’s, Q.No:31 )
4. If a bomb at rest explodes into two pieces, the pieces must travel in opposite
directions. Explain. (plus academy guess q’s, Q.No:40 )
5. Why water droplets wet the glass surface and does not wet lotus leaf?
6. Mention any two applications of Bernoulli’s theorem. (plus academy guess q’s,
Q.No:5, 1st page )
7. Distinguish between heat and temperature? (plus academy guess q’s, Q.No:106 )
8. The roofs of buildings are often painted white during summer. Why? (plus academy
guess q’s, Q.No:98 )
9. Define free path?
10. State Boyle’s law and Charle’s law? (plus academy guess q’s, Q.No:6, 1st page )
Section – B
Short answer types questions.
(i) Attempt any Six questions
(ii) Each questions carries four marks
11. When a ball is thrown upwards with a velocity of 20 m/s from the top of a multistorey, the height of the point from where the ball is thrown is 25.0m from the
ground.
a. How high will the ball rise? And
b. How long will it be before the ball hits the ground?
Junior Intermediate | Physics I IPE 2015 Question paper
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12. Show that the trajectory of an object thrown at certain angle with the horizontal is a
parabola. (plus academy guess q’s, Q.No:2 )
13. Explain advantages and disadvantages of friction. (plus academy guess q’s, Q.No:6 )
14. Distinguish between centre of mass and centre of gravity. (plus academy guess q’s,
Q.No: 21)
15. Define vector product. Explain the properties of a vector product with two
examples. (plus academy guess q’s, Q.No:20 )
16. What is a geostationary satellite? State its uses? (plus academy guess q’s, Q.No:30 )
17. Describe the behaviour of a wire under gradually increasing load. (plus academy
guess q’s, Q.No:33 )
18. Explain conduction, convection and radiation with examples.
Section – C
Long answer types questions.
a. Attempt any two questions
b. Each questions carries eight marks
19. Develop the notations of work and kinetic energy and show that thee lead to the work
energy theorem. State the conditions under which a force does no work. (plus academy
guess q’s, Q.No:14 )
20. Show that the motion of a simple pendulum is simple harmonic and hence derive an
equation for its time period. What is second’s pendulum? What is the length of a
simple pendulum which ticks seconds? (g=9.8 m/sec2) (plus academy guess q’s,
Q.No:3 )
21. Explain reversible and irreversible processes. Describe the working of a Carnot engine.
Obtain an expression for the efficiency. (plus academy guess q’s, Q.No:15 )
Plus academy guess paper
2Marks scoring: 16 M
4Marks scoring: 24 M
8 Marks scoring: 24 M
Total Scoring (with choice):
64/76
Total Scoring (without choice):
56/60 Marks
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Junior Intermediate | Physics I IPE 2015 Question paper
| [email protected]