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What are examples of lotic water? A. Streams, river, and springs B. River, lake, and ponds C. Swamps and lakes D. Lakes…
Derive mirror equation. State any three experimental observations of photoelectric emission. Hint: In a spherical mirror, the distance of the object from…
Difference between voluntary and involuntary muscles is A. Voluntary muscle can be moved by conscious will, involuntary muscles function on their own….
Why is AC more dangerous than DC? Hint: Electrical current can be of two types—alternating current (AC) and direct current (DC). AC…
Why is the transformer rated in kVA, not in KW? Hint: The iron losses in a transformer depend on the voltage, and…
What are the advantages of parallel combination over series combination? Hint: To answer this question, we will first highlight the advantages of…
Genotypic ratio of a dihybrid cross is A. 12:3:1 B. 15:1 C. 1:2:1 D. 1:2:2:4:1:2:1:2:1 Hint: Genotype refers to the genetic makeup…
What is the correct relationship between α and β in a transistor? A. β = α / (1 – α) B. β…
What are the duties of Anganwadi workers? Hint: Anganwadi was a program launched by the Indian government as part of the Integrated…
Describe the astronomical telescope on the basis of the following points: (i) Labelled ray diagram. (ii) Derivation of formula for magnifying power,…