SSC (English Medium) 10th Standard - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Complete the following activity.

Correlate the given sequence:

Hypermetropia : Convex lens : ______ : Concave lens

______ react with dil. HNO₃ to evolve hydrogen gas.

Observe the figure whether it is correct or not and explain the phenomenon.

Observe the figure and answer the following questions: 

1. Name the defect of vision represented in the above figure.
2. State the reasons for this defect.
3. How is it corrected?
4. Draw the diagram to show the correction of this defect.

Complete the following table by observing the given figures:

Figure →
Points ↓
(a) Name of the defect	______	______
(b) Position of the image	______	______
(c) Lens used to correct the defect	______	______

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

Define Radius of curvature of the spherical mirror

Define the Focal length of a spherical mirror

What is an oxidising agent? 

A stone is thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is the same as the time taken to come down.

An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s².

Write a scientific reason.

Metallic character goes on decreasing while going from left to right in a period.

Explain the following term with example.
Monomer

Explain the following term with example.

Reduction

Explain the following term with an example.

Oxidant

Solve the problem.

If the mass of a planet is eight times the mass of the Earth and its radius is twice the radius of the Earth, what will be the escape velocity for that planet?

What will be the weight of a person on earth, who weighs 9N on the moon?

A ball falls off a table and reaches the ground in 1 s. Assuming g=10 m/s^2, calculate its speed on reaching the ground and the height of the table.

i) If g = GM/r² then where will the value of g be high at Goa Beach or on top of Mount Everest?