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12/08/2026

CLASS 10 LIGHT | Important Questions Answered

Q11. Why violet light deviates more than red light? [n_violet = 1.53 > n_red = 1.50]
Q13. What happens to ciliary muscles when you see far vs near objects? [Accommodation of eye]
Q14. Does speed of light change in a prism? What is angle of deviation? Prism vs Glass Slab?

Complete explanation with correct diagram (Fig 10.4 NCERT) in the image.

Note: For far away object, ciliary muscles RELAX and focal length INCREASES (lens becomes thin, less curved). Many students write it wrong!

Was this helpful? Let me know which chapter you want next in comments.

Class 10 light questions and answers
12/08/2026

Class 10 light questions and answers

Class 10 Physics: Effects of Electric Current - Complete Test (40 Marks) ⚡️Is your chapter really prepared? Test it with...
10/08/2026

Class 10 Physics: Effects of Electric Current - Complete Test (40 Marks) ⚡️
Is your chapter really prepared? Test it with this 1 Hour Test Paper covering MCQs, Assertion-Reason, Numericals, and Long Answers.
Includes important questions like:
V-I graphs, Heating Effect, Fuse rating, Equivalent Resistance & Ohm's Law verification.
Save this post and try it TODAY. Answers coming tomorrow in Comments / Next Post.
Follow PhysicsCatalyst for more such tests.

09/08/2026

The direction of flow of positive charge is conventionally taken as the direction of electric current.

- A) True

- B) False

09/08/2026

Class 10 Science MCQ Challenge | Electricity - Q2

Question: The rate of flow of electric charge through a particular area in unit time is known as:
A) Potential difference
B) Resistance
C) Electric current
D) Electrical energy

Answer is in the next frame of this reel with full explanation: I = Q/t

This is a direct NCERT definition and comes almost every year in 1 mark.

Comment your answer and tell us if you got it correct. Follow PhysicsCatalyst for daily Class 10 MCQ practice.

09/08/2026

Class 10 Science MCQ Challenge #1 | Chapter - Electricity

Question: A continuous and closed path of an electric current is called:
A) Electric power | B) Electric circuit | C) Electric potential | D) Electric resistance

Think you know it? Watch till the end of the reel for the correct answer with explanation.

Comment your answer and share it with a Class 10 friend who needs this for revision.

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Full Solution in comment
07/08/2026

Full Solution in comment

Understanding the Thomson Atomic Model - The First Modern Atomic ModelAfter discovering the electron in 1897, J.J. Thoms...
06/08/2026

Understanding the Thomson Atomic Model - The First Modern Atomic Model

After discovering the electron in 1897, J.J. Thomson proposed in 1904 that:

An atom consists of a sphere of positive charge
Negatively charged electrons are embedded in it
The positive and negative charges balance, so the atom is neutral
Often called the Plum Pudding or Watermelon Model
It was later disproved by Rutherford's Gold Foil Experiment, but it was the crucial first step towards our modern understanding of the atom.

I made this infographic to make the basics crystal clear for Class 9-12 students. Feel free to share it with students who need it.

What was the biggest limitation of this model according to you?





06/08/2026

From Average Value to RMS Value, these notes cover the most important concepts and formulas you need for exams.

💾 Save now.
📚 Revise later.

05/08/2026

Class 10 Physics Electricity Revision Notes.

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