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.

Explain the critical angle for a given medium.
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?
If the critical angle of a substance is 45 degrees for yellow light, then calculate the refractive index of the substance.
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.
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.
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)
Mention the thin lens formula for a convex lens and also draw a graph representing variation of u and v for a convex lens.
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.
A Radio transmitter runs on a wavelength of 1500m at a power of 400kW. Calculate the energy of the radio photons in joules.
Suppose the intensity of radiation in the photocell has increased, then how willthe stopping potential vary?