MCQ_SINGLE

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Forelimbs of human and bats are homologous. Reason R: Forelimbs of humans and bats have similar anatomical structure. In the light of the above statements, choose the most appropriate answer from the options given below.

MCQ_SINGLE

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced. Reason R: Goats were more efficient at browsing than Abingdon tortoise. In the light of the above statements, choose the most appropriate answer from the options given below:

MCQ_SINGLE

Consider a spring-mass simple harmonic oscillator in one dimension. The mass of the particle is $m$ kg and the spring constant is $k~Nm^{-1}$. At a given instant, the extension of the spring is $x$-meter and the speed of the particle is $v~ms^{-1}$. On the $x-v$ plane, if the graph of $v$ as a function of $x$ is a circle, then the correct option is:

MCQ_SINGLE

A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere B of radius $r

MCQ_SINGLE

A thin horizontal disc is rotating about a vertical axis passing through its fixed centre O. Its angular momentum is $L_{A}$ and $L_{B}$ computed about points A and B, respectively, with $OB=2\times OA.$ The value of $\frac{L_{A}}{L_{B}}$ is:

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