SSC (Marathi Semi-English) 10th Standard Board Exam [इयत्ता १० वी] - Maharashtra State Board Important Questions for Science and Technology 1

Name and state the principle used to measure the specific heat capacity of a substance.

Read the following paragraph and answer the questions.
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy.
The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box (meaning that the energy exchange takes place between the two objects only), then no energy can flow from inside the box or come into the box.

i. Heat is transferred from where to where?
ii. Which principle do we learn about from this process?
iii. How will you state the principle briefly?
iv. Which property of the substance is measured using this principle?

Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.

When heat energy is absorbed by object ΔT represents the raise in temperature. What would be ΔT represent if the object loses heat energy?

The vapour content in the air is measured using a physical quantity called ____________.

Write a short note.

Specific heat capacity

How much is the relative humidity at the dew point?

To study energy exchange between hot and cold objects, the system of both objects is isolated from the environment by keeping them inside ______.

Match the columns:

Find the odd one out:

How do we feel about air in each of the following conditions?

1. Relative humidity is more than 60%.
2. Relative humidity is less than 60%.

Observe the following diagram and answer the questions given below:

       Specific heat capacity of metals

1. Which element has maximum specific heat capacity? Justify.
2. Which element has minimum specific heat capacity? Justify.
3. Define specific heat of object.

Write the use of ‘Calorimeter’.

Choose and write the correct option.

If we gradually increase the angle of incidence of a ray of light passing through prism then …..

The phenomenon of splitting of light into its component colours is ___________ .

The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.

Draw a labelled diagram: Dispersion of light through a prism.

Answer the following:

What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light. 

Explain how the formation of a rainbow occurs.