01How many chromosomes are normally present in the first cell formed after fertilisation in humans?मनुष्य में निषेचन के बाद बनने वाली पहली कोशिका में सामान्यतः कितने गुणसूत्र होते हैं?
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Science
Image formation
In this Class 10 Science topic from the chapter Light Reflection and Refraction, students learn how images are formed by spherical mirrors and lenses. They study the reflection and refraction of light rays, use standard ray diagrams, and determine an image’s position, size, nature, and orientation. The topic also introduces real and virtual images, the mirror and lens formulas, magnification, and sign conventions, helping students explain image formation in familiar optical devices.
Easy · Level 1 · 3 questions
Practice questions
02What are organisms that make their own food called?जो जीव अपना भोजन स्वयं बनाते हैं, उन्हें क्या कहते हैं?
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Answer and explanationउत्तर और व्याख्या
03What type of image is formed by a plane mirror?समतल दर्पण द्वारा किस प्रकार का प्रतिबिंब बनता है?
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