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

Draw figure ‘Electric motor’ and working 

What is the Principle of an Electric motor?

Name any four appliances where electric motor is used.

The distance between principal focus and optical centre of the lens is _________.

1. diameter
2. focal length
3. principal axis
4. optical centre

Give a scientific reason:

Danger signals are red in colour.

Complete the following reaction, balance it and write the name of the products CuO + HCI →_________ + _________

Complete the following :-

(a)

Fill in the blank:

Very fine particles mainly scatter ………… colored light.

If the equivalent resistance is to be increased, then the number of resistances should be connected in

1. Series
2. Parallel
3. Mixed arrangement
4. None of the above

When the substance ‘A’ is added to a solution of BaSO₄, a yellow precipitate is formed.

1. What do you think substance A is likely to be?
2. Name the precipitate.
3. Which type of reaction is this?

Find the expression for resistors connected in series.

What will happen if a solution of sodium hydrocarbonate is heated? Give the equation of the reaction involved.

State whether the following statement is true or false.

An electric motor converts mechanical energy into electrical energy.

Write any two characteristics of a series combination of resistors.

Explain the construction and working of an electric motor.

An object is held 20 cm away from a converging lens of focal length 10 cm. Find the position of the image formed.

Label the four parts of an electric motor

Write the new Cartesian sign convention for spherical lenses.

What is a solenoid?

Tell the odd one out. Give proper explanation.

Loud speaker, Microphone, Electric motor, Magnet.