निम्नलिखित प्रकाशिक उपकरणों को उनके प्राथमिक प्रकाशिक घटकों के साथ सुमेलित कीजिए: सूची-I (उपकरण): a. पेरिस्कोप b. संयुक्त सूक्ष्मदर्शी c. आवर्धक लेंस (मैग्निफाइंग ग्लास) d. साइड (रियर-व्यू) दर्पण सूची-II (घटक): 1. उत्तल लेंस2. दो समतल दर्पण3. उत्तल दर्पण4. दो उत्तल लेंस

The sugar content (soluble solids concentration in °Brix) of fruit juices, soft drinks, jams, and jellies is measured using which instrument?

Arrange the following processes in the correct sequence with reference to the operation of an astronomical telescope: (N) Parallel rays from a distant object at infinity enter the objective lens. (O) Rays converge to form an image. (L) A real and inverted image forms at the focal plane of the objective lens. (M) The eyepiece magnifies this intermediate image. (K) Final image rays emerge as parallel rays.