MEDIUM
10th Telangana Board
IMPORTANT
Earn 100

Show the formation of image with a ray diagram when an object is placed on the principal axis of a concave mirror away from the centre of curvature.

Important Questions on Solved Science Paper-2

MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Acids, Bases and Salts>Exercise>Q 16
Which gas is produced when aluminium metal reacts with NaOH solution? How will you test this gas?
MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Acids, Bases and Salts>Exercise>Q 45
Write the names, formulae and colours of any two hydrated salts.
EASY
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Human Eye and Colourful World>Exercise>Q 17
Write about the power of accommodation of human eye. Explain why the image distance in the eye does not change when we change the distance of an object from the eye?    
HARD
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Structure of Atom>Exercise>Q 31
The Li2+ ion is a hydrogen like ion that can be described by the Bohr model. Calculate the Bohr radius of the third orbit and calculate the energy of an electron in 4th orbit.
 
MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Solved Science Paper-2>Exercise>Q 3
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines. What is the process called?
MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Solved Science Paper-2>Exercise>Q 4
How will you concentrate gold ores? How is it obtained back?
HARD
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Solved Science Paper-2>Exercise>Q 6

A piece of wire having a resistance R is cut into six equal parts.

How will the resistance of each part compare with the original resistance?

MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 14 - Solved Science Paper-2>Exercise>Q 7
What is meant by power of a lens? Define the SI unit. You have two lenses A and B of focal lengths + 10 cm and -10 cm respectively. State the nature and power of each lens. Which of the two lenses will form a virtual and magnified image of an object placed 8 cm from the lens? Draw ray diagrams to justify your answer.