സിനിമാ പ്രൊജക്ടറുകളിൽ ഉപയോഗിക്കുന്ന ദർപ്പണം ഏത്?
Aകോൺവെക്സ് ദർപ്പണം
Bകോൺകേവ് ദർപ്പണം
Cബൈഫോക്കൽ ദർപ്പണം
Dസിലിണ്ടറിക്കൽ ദർപ്പണം
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Related Questions:
The radius of curvature of a given spherical mirror is-20 cm. The focal length of the mirror is?
Which of the following line(s) act as a normal to a spherical mirror?
- (i) Line joining the pole and centre of curvature
- (ii) Line joining the centre of curvature and point of incidence
- (iii) Line joining focus and point of incidence
The laws of reflection hold true for which of the following mirror(s)?
- (A) Concave mirror
- (B) Convex mirror
- (C) Plane mirror
A spherical mirror converges a beam of light, at a given point on the principal axis. Which of the following statement(s) about the mirror is are true?
- (a) The mirror used in concave
- (b) The mirror has positive focal length
- (c) The point of convergence is the principal focus of the mirror
Which of the following statements is/are true about the principal axis of a spherical mirror?
- (i) It is normal to the mirror.
- (ii) Point of incidence always lies on the principal axis.
- (iii) Principal focus always lies on the principal axis