ICSE Class 10 Light — Mock Test (2027)

Free online mock test for Light (ICSE Class 10 Physics) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.What is Newton's colour disc, and what does its rapid rotation demonstrate about white light?
   • A.A disc with random colors; shows colors can mix to form black.
   • B.A disc with spectrum colors (VIBGYOR); shows white light is a combination of all colors.
   • C.A disc with primary colors; shows secondary colors are formed by mixing.
   • D.A disc with monochrome shades; shows light intensity variation.
2. 2.An object placed in front of a convex lens, forms an image of same size on a screen. Moving the object 12 cm closer to the lens results in the formation of a real image which is three times the size of the object. Calculate the focal length of the lens.
3. 3.A ray of light incident at an angle of incidence $48^\circ$ on a prism of refracting angle $60^\circ$ suffers minimum deviation. Calculate the angle of minimum deviation. [Hint: $\delta_{min} = 2i - A$]
4. 4.A spectrum in which various bands of colour have no sharp, well defined boundaries, but merge in each other is called
   • A.Infrared spectrum
   • B.Impure spectrum
   • C.Red spectrum
   • D.Pure spectrum
5. 5.A stick partly immersed in water appears bent when viewed obliquely from above. Which ray diagram correctly shows the bending of the stick due to refraction? is the reference diagram.
   • A.Light bends toward the normal, making the stick appear bent downward
   • B.Light bends away from the normal, making the stick appear bent upward
   • C.Light travels straight without bending, so the stick appears straight
   • D.Light reflects completely, making the stick invisible underwater