Cho S1 và S2 trước gương phẳng
a, xác định vùng nhìn thấy S1
B, Xác định vùng nhìn thấy S2
c, Xác định vùng nhìn thấy 2 điểm
d, Xác định vùng không nhìn thấy ảnh nào
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<h3 class="i-title"><a href="https://hoc247.net/hoi-dap/vat-ly-7/tinh-goc-tao-boi-tia-toi-va-mat-guong-khi-goc-tao-boi-tia-toi-va-tia-phan-xa-bang-50--faq164773.html">Tính góc tạo bởi tia tới và mặt gương khi góc tạo bởi tia tới và tia phản xạ bằng 50° ?</a></h3>
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<span>bởi <a class="i-name-member" href="https://hoc247.net/id/111192" data-type="member" data-id="111192">Trần Bảo Việt</a>
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<span class="datepost"> <i class="fa fa-calendar"></i> 18/10/2018</span>
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<div class="i-content"><p>Chiếu một tia sáng tới lên gương phẳng, biết góc tạo bởi tia tới và tia phản xạ bằng 50°. Góc tạo bởi tia tới vaf mặt gương bằng:</p></div>
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<h3 class="i-title"><a href="https://hoc247.net/hoi-dap/vat-ly-7/khi-nao-vat-phat-ra-am-cao-thap-to-nho--faq164108.html">Khi nào vật phát ra âm cao, thấp, tô, nhỏ ?</a></h3>
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<span>bởi <a class="i-name-member" href="https://hoc247.net/id/111184" data-type="member" data-id="111184">Nguyễn Lệ Diễm</a>
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<span class="datepost"> <i class="fa fa-calendar"></i> 18/10/2018</span>
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<div class="i-content"><p><b>6. </b>Khi nào vạt phát ra âm cao, thấp, to, nhỏ <b><i>(nhớ trình bày rõ ràng nhé các bn yêu dấu!!)<img title="yeu" alt="yeu" width="40" height="40" src="https://hoc247.net/image/faq/data2/665419_145281-udludlah.jpg" /></i></b></p></div>
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<h3 class="i-title"><a href="https://hoc247.net/hoi-dap/vat-ly-7/so-sanh-tinh-chat-anh-tao-boi-cac-guong--faq163763.html">So sánh tính chất ảnh tạo bởi các gương ?</a></h3>
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<span class="datepost"> <i class="fa fa-calendar"></i> 18/10/2018</span>
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<div class="i-content"><p><b>5.A. </b>So sánh tính chất ảnh tạo bởi các gương.<br /> <b>B.</b> Nêu và giải thích ứng dụng cuuar các loại gương.<br /> <br /> <b><i>Help milk!mai milk nộp rồi!!!!!!!!!!!!<img title="khocroi" alt="khocroi" width="40" height="40" src="https://hoc247.net/image/faq/data2/18518_921932-." /></i></b></p></div>
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<h3>XEM NHANH CHƯƠNG TRÌNH LỚP 7</h3>
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18/10/2018
18/10/2018
18/10/2018
