Test Paper for Light I and II

Set 1

Q.1.Give Reasons                                                                               (4)

1.      Concave mirror is called converging mirror.

2.      Stars twinkle at night.

Q.2.Distinguish between the following.                                          (2)

1.      Myopia and Hypermetropia.

Q.3.Answer the following                                                                 (8)

1.      What is meant by power of accommodation.

2.      Explain how rainbow is formed.

3.      Write short note on : Refraction observed in atmosphere.

4.      The velocity of light in a medium is 1.5 × 10⁸ m/s. What is the refractive index of the medium w.r.t air if velocity in air is 3 ×10⁸ m/s.

Q.4. Answer in brief                                                                          (10)

1.      Explain sign conventions for reflection by spherical mirrors.

2.      Draw a neat labeled diagram of a normal human eye. Describe its parts briefly.

Set 2

Q.1.Give Reasons                                                                               (4)

1.      The sun appears reddish early in morning.

2.      A simple microscope is used by watch repairers.

Q.2.Distinguish between the following.                                          (2)

1.      Myopia and Hypermetropia.

Q.3.Answer the following                                                                 (8)

1.      State functions of iris and ciliary muscles.

2.      What is refraction of light? How is it related to refractive index.

3.      Write short note on : Dispersion of light..

4.      What is speed of light in diamond if absolute refractive index of diamond is 2.4 and velocity of light in vacuum is 3 × 10⁸ m/s.

Q.4. Answer in brief                                                                          (10)

1.      Explain sign conventions for reflection by spherical mirrors.

2.      Draw a neat labeled diagram of a normal human eye. Describe its parts briefly.

Formal Letter

Write a letter to the Municipal Commissioner on the terrible condition of roads and drains in your area.

                

                       Sub: Terrible Condition of roads and drains.

Respected Sir,

                The residents of Bakhtawar Peth are facing serious problems due to overflowing and awfully stinking drains near our building, which have not been cleared for more than a month. Monsoon has just arrived and the pothole on the road with dirty water collected in it makes travelling a big task. There are many accidents and traffic at its peak. Residents walk through the area with their nose covered. The uncleared drains, besides causing a nuisance, poses a serious health hazard to the people of this area.

                I request you to take prompt action and to see to it that the drains are cleared immediately and roads are constructed as soon as possible. The residents of the locality did not complain to you earlier as they expected your department to realize its basic civic obligations, and wake up to its duty we hope you take the necessary steps without any further delay.

Thanking you in anticipation.

Yours faithfully,

XYZ

Geography Important Questions

Important Questions for SSC Mahrashtra Board.

1. Discuss the characteristics of Himalayas.
2. Explain main divisions of North Indian Plains.
3. Explain the traditional methods of rain water harvesting.
4. How are the basic economic problems solved under capitalism?
5. Explain various types of Economy.