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Vishal Kumar Gupta 4 years, 7 months ago
Yogita Ingle 4 years, 10 months ago
अवतल लेंस का मुख्य फोकस (Principle Focus) : अवतल लेंस पर मुख्य अक्ष के समांतर प्रकाश की अनेक किरणें आपतित होती हैं। ये किरणें लेंस से अपवर्तन के पश्चात मुख्य अक्ष के एक बिंदु से अपसरित होती प्रतीत होती हैं। मुख्य अक्ष पर यह बिंदु अवतल लेंस का मुख्य फोकस कहलाता है।
Posted by Zeeshan Shaikh 4 years, 9 months ago
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Shubhankar Mishra 4 years, 9 months ago
Ajad Kumar 4 years, 9 months ago
Posted by Adarsh Shukla 4 years, 10 months ago
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Gaurav Seth 4 years, 10 months ago
In a federal form of government, the central government shares its powers with the various constituent units of the country. For example, in India, power is divided between the government at the Centre and the various State governments. In a unitary form of government, all the power is exercised by only one government.
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Shubhankar Mishra 4 years, 9 months ago
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Yogita Ingle 4 years, 10 months ago
tan10°tan15°tan 75° tan80°
= tan10 tan15 tan(90-75) tan (90-80)
= tan10 tan15 cot 15 cot10
as we know tan theta * cot theta = 1
so
tan10 cot10 tan15 cot 15
= 1
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Bugu Ji 4 years, 6 months ago
Ramu Vishwkarma 4 years, 7 months ago
Meghna Thapar 4 years, 11 months ago
Yama had taken the form of yaksha in order to test Yudhisthra knowlege . After all the Pandavas took to search for the mysterious deer , Yudhisthra came across the dead bodies of his brothers . on examining closely he realises that something to do with the crane that was the lounging on the lake . Yaksha was Yama the God of Death. He had taken the form of Yaksha to see and test Yudhishthira.
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Yogita Ingle 4 years, 11 months ago
he two laws of reflection are:
(i) the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane.
(ii) the angle of reflection (<i>r</i>) is always equal to the angle of incidence (<i>i</i>)
∠<i>r</i> = ∠<i>i</i>
Gaurav Seth 4 years, 11 months ago
Laws of Reflection of light:
- The angle of incidence and angle of reflection is equal.
- The incident ray, reflected ray and normal to the point of reflection lie in the same plane.
The angle of incidence is denoted by 'i' and angle of reflection is denoted by 'r'. The law of reflection is applicable to all types of reflecting surface.
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Saurabh Jha 4 years, 8 months ago
1Thank You