1 markMCQSection Section A

A student wants to obtain an erect image of an object using a concave mirror of $10 \text{ cm}$ focal length. What will be the distance of the object from mirror?

Light — Reflection and Refraction

Reflection of Light

Options

(a)Less than

10 \text{ cm}

(b)

10 \text{ cm}

(c)between

10 \text{ cm}

and

20 \text{ cm}

(d)more than

20 \text{ cm}

Official Answer

To obtain an erect image of an object using a concave mirror, the object must be placed between the pole and the principal focus of the mirror. Therefore, the distance of the object from the mirror will be less than $10 \text{ cm}$ .

concave mirrorerect imagepoleprincipal focus

Marking Scheme

11 mark

Hint

Recall the properties of images formed by a concave mirror.

Quick Oral Answer

To obtain an erect image of an object using a concave mirror, the object must be placed between the pole and the principal focus of the mirror.

Analysis & Explanation

The question requires the student to recall the properties of images formed by a concave mirror. The student must remember that an erect image is formed when the object is placed between the pole and the principal focus of the mirror.

Common Mistakes

1Placing the object at the principal focus or beyond.

Interesting Facts

Concave mirrors are commonly used in torches, search-lights and vehicles headlights to get powerful parallel beams of light.

Spotted a mistake or something unclear?

Tell us — we fix reported answers fast.

Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Light — Reflection and Refraction" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Reflection of Light" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section Section A in the CBSE Class 10 Science 2023 paper.