ISC Physics 1 Marks Expected Question 2025 for Exam Day

ISC Physics 1 Marks Expected Question 2025 for Exam Day: As the ISC exam 2025 is ongoing, students preparing to appear for the Physics paper must practice questions. Generally, a Physics paper comprises a maximum number of formula-based questions that test students' calculative skills. Students in the quest to focus on high-mark questions often pay less attention to 1-mark questions. Per exam pattern, Section A contains objective type questions where candidates can get good scope to fetch full marks. 

Students must practice these ISC Physics 1 mark expected questions 2025 for exam day to enhance their chances of a higher number of good attempts.

Also Read: Karnataka 2nd PUC Physics Electromagnetic Induction Important Question 2025

ISC Physics 1 Marks Expected Question 2025

Here are some expected ISC Physics 1 mark questions 2025 that can help students understand the topics covered in Section A.

1. Explain the critical angle for a given medium.
2. Suppose a bulb and an inductor have been connected in series to a source of AC. What will happen if we increase the AC source frequency?
3. If the critical angle of a substance is 45 degrees for yellow light, then calculate the refractive index of the substance.
4. If a convex lens with a focal length of 20 cm is placed 10 cm in front of a convex mirror that has a radius of curvature of 15cm, then where can a point object be placed in the front of the lens so that the image is on to itself. 
5. Suppose an equiconvex spherical lens with a focal length of 20 cm is split into two halves to form two planoconvex lenses, then find out the focal length of each planoconvex lens.
6. Explain how a glass len’s(RI 1.5) focal length changes when it is immersed in i) water(RI 1.33) ii) A liquid(RI=1.65)
7. Mention the thin lens formula for a convex lens and also draw a graph representing variation of u and v for a convex lens. 
8. Calculate the radius of curvature of a convex lens surface of a planoconvex lens whose focal length is 0.3m and whose refractive index of the material of the lens is 1.5.
9. A Radio transmitter runs on a wavelength of 1500m at a power of 400kW. Calculate the energy of the radio photons in joules. 
10. Suppose the intensity of radiation in the photocell has increased, then how willthe  stopping potential vary?

ISC Physics 1 Marks Expected Question 2025: Important Chapters

To prepare ISC Physics 1 mark expected question 2025 students must understand the chapters-wise weightage for 1 mark questions.

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