NEET 2017 APRA

Instructions

For the following questions answer them individually

NEET 2017 APRA - Question 41


The resistance of a wire is ā€˜R’ ohm. If it is melted and stretched to ā€˜n’ times its original length, its new resistance will be

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NEET 2017 APRA - Question 42


A physical quantity of the dimensions of length that can be formed out of c, G and $$\frac{e^2}{4 \pi \epsilon_0}$$ is [c is velocity of light, G is universal constant of gravitation and e is charge]

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NEET 2017 APRA - Question 43


Radioactive material 'A' has decay constant $$'8 \lambda'$$ and material 'B' has decay constant $$'\lambda'$$. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material 'B' to that 'A' will be $$\frac{1}{e}$$ ?

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NEET 2017 APRA - Question 44


A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F, because the method involves :

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NEET 2017 APRA - Question 45


The ratio of resolving powers of an optical microscope for two wavelengths $$\lambda_1 = 4000 ƅ$$ and $$\lambda_2 = 6000 ƅ$$ is

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NEET 2017 APRA - Question 46


A disease caused by an autosomal primary non-disjunction is

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NEET 2017 APRA - Question 47


A dioecious flowering plant prevents both:

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NEET 2017 APRA - Question 48


Attractants and rewards are required for

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NEET 2017 APRA - Question 49


Alexander Von Humboldt described for the first time

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NEET 2017 APRA - Question 50


Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

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