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

Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.

Draw a neat diagram of a solenoid and name its various components.

An object of 10 cm is placed in front of a plane mirror. The height of image will be …………….
(a) 5 cm
(b) 15 cm
(c) 20 cm
(d) 10 cm

Calculate the focal length of a corrective lens having power +2D.

A simple microscope is used by watch repairers. Give reason.

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

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

Draw a ray diagram for concave mirror when the object is between centre of curvature and focus.

In a Std. X class out of 40 students 10 students use spectacles, 2 students have positive power and 8 students have negative power of lenses in their spectacles.

Answer the following questions:

(1) What does the negative power indicate?

(2) What does the positive power indicate?

(3) Generally which type of spectacles do most of the students use?

(4) What defect of eyesight do most of the students suffer from?

(5) Give two possible reasons for the above defect.

With the help of an appropriate ray diagram, state the sign conventions for reflection by a spherical mirror.

Calculate the focal length of a corrective lens having power +2.5 D.

What is myopia?

Explain two possible reasons of myopia. How can it be corrected? Explain with a suitable diagram.

Which type of mirror is used by a dentist?

Define Radius of curvature of the spherical mirror

Define the Focal length of a spherical mirror

Kavita from 10th is using spectacles. The power of the lenses in her spectacles is –2.5 dioptre. Answer the following questions:

1) Which lenses are used in her spectacles?

2) State the defect of vision Kavita is suffering from.

3) Find the focal length of the lenses used in her spectacles

The height of the image formed by an object of height 10 cm placed in front of a plane mirror is __________.

(a) 5 cm
(b) 10 cm
(c) 15 cm
(d) 20 cm

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

Complete the following table:

i. Which type of microscope has the arrangement of lenses shown in the  adjoining figure?
ii. Label the figure correctly.
iii. Write the working of this microscope.
iv. Where does this microscope used?
v. Suggest a way to increase the efficiency of this microscope.