Question

Name:
WORK-SHEET (1st Month, 2020-21)
Subject - Science, Class X, Section:-
Roll No.: _School:
(Note: Before submitting the solved paper to the teacher, Student should also note it dow
in his/her notebook.)
Attempt all questions. Use separate sheets to solve the worksheet
Theme: Materials, Unit I: Chemical Substances - Nature and Behaviour.
Theme: The World of the Living, Unit II: World of Living:
Theme: Natural Phenomena, Unit III: Natural Phenomena:
1. Define the principal focus of a concave mirror.
2. The radius of curvature of a spherical mirror is 20 cm. What is its roca gh?
3. Name a mirror that can give an erect and enlarged image of an obje
4. The magnification produced by a plane mirror is +1. What does it mean?
SAGAR​

Answer 1

Answer:

1. Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.

3. concave mirror gives an erect and enlarged image of an object held between pole and principal focus of the mirror.

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