MCQ Practice – Class 6 to 10

Q1. Light travels fastest in:

A. Glass B. Diamond C. Water D. Vacuum

Q2. Lens formula is:

A. 1/f = 1/v + 1/u B. V = IR C. F = ma D. P = VI

Q3. The bending of light in the human eye lens helps in:

A. Producing blood B. Sleeping C. Focusing images D. Breathing

Q4. Which colour bends the least during refraction?

A. Violet B. Red C. Blue D. Indigo

Q5. The speed of light is maximum in:

A. Water B. Vacuum C. Glass D. Air

Q6. The power of a lens is measured in:

A. Dioptre B. Newton C. Watt D. Metre

Q7. Light of which wavelength bends the most?

A. Short wavelength B. No wavelength C. Long wavelength D. Equal wavelength

Q8. Which of the following lenses is used to correct hypermetropia?

A. Convex lens B. Plane mirror C. Concave lens D. Convex mirror

Q9. The focal length of a convex lens is:

A. Infinite B. Positive C. Negative D. Zero

Q10. Real depth is always:

A. Zero B. Equal to apparent C. Less than apparent depth D. Greater than apparent depth

Quiz – Refraction of Light