Question

D) Answer the following ( 5*2= 10)
1) Explain the two factors affecting boiling.
2) Write a short note on linear expansion.
3) What do you mean by anomalous expansion of water?
4) Explain the unique properties of reflection.
5) With the aid of suitable ray diagram enlist four use of spherical mirror.
E) Answer the questions (5*2=20)
1) State the laws of reflection.
2) With the help of a ray diagram show the reflected ray when a ray is incident on the pole of s spherical mirror at an angle of 45degree.
3) Define work and give its formula.
4) Discuss various forms of mechanical energy.
5) Explain the energy transformation taking place in a) free falling body b) simple pendulum.
F) Answer the questions 5*2=10
1) What does the law of conservation of energy state?
2) With the help of an activity demonstrate that liquid exert pressure.
3) How does pressure vary with change in force? Explain with the help of a diagram.
4) A wooden box of 140N weight is kept on a table. The area of cross-section of the box is 5m^2. Calculate the pressure exerted by the box on the table.
5) Find the work done by a woman who applied a force of 13N to displace a table through a distance of 9 m in the direction of force.

Answer 1

Answer:

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Explanation:

) Find the work done by a woman who applied a force of 13N to displace a table through a distance of 9 m in the direction of force.

Answer 2

Answer:

Find the work done by a woman who applied a force of 13N to displace a table through a distance of 9 m in the direction of force.

Explanation:

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