Q1 · easy · AI-verified
The angle of incidence is always equal to the angle of reflection. This statement represents which law?
- Snell's Law
- Law of Reflection
- Law of Refraction
- Law of Dispersion
Q2 · medium · AI-verified
A concave mirror of focal length 20 cm forms a virtual image at 60 cm behind the mirror. Where is the object placed?
- 30 cm in front of the mirror
- 15 cm in front of the mirror
- 10 cm in front of the mirror
- 60 cm in front of the mirror
Q3 · medium · AI-verified
An object is placed at the centre of curvature of a concave mirror. Where is the image formed?
- At the focus
- At the centre of curvature itself
- Between the focus and the pole
- At infinity
Q4 · hard · AI-verified
An object 4 cm tall is placed 20 cm in front of a convex mirror of focal length 20 cm. What is the height of the image formed?
- 1 cm
- 2 cm
- 4 cm
- 3 cm
Q5 · easy · AI-verified
When an object is placed between the pole and the focus of a concave mirror, the image formed is:
- Virtual, inverted and diminished
- Real, inverted and magnified
- Virtual, erect and magnified
- Real, erect and same size