JEE Main 2024 (Online) 31st January Evening Shift | Properties of Matter Question 27 | Physics

A small spherical ball of radius $$r$$, falling through a viscous medium of negligible density has terminal velocity '$$v$$'. Another ball of the same mass but of radius $$2 r$$, falling through the same viscous medium will have terminal velocity:

$$4 \mathrm{v}$$

$$2 \mathrm{~V}$$

$$\frac{v}{4}$$

$$\frac{\mathrm{v}}{2}$$

JEE Main 2024 (Online) 31st January Morning Shift

MCQ (Single Correct Answer)

-1

A small steel ball is dropped into a long cylinder containing glycerine. Which one of the following is the correct representation of the velocity time graph for the transit of the ball?

JEE Main 2024 (Online) 31st January Morning Shift Physics - Properties of Matter Question 31 English Option 1

JEE Main 2024 (Online) 31st January Morning Shift Physics - Properties of Matter Question 31 English Option 2

JEE Main 2024 (Online) 31st January Morning Shift Physics - Properties of Matter Question 31 English Option 3

JEE Main 2024 (Online) 31st January Morning Shift Physics - Properties of Matter Question 31 English Option 4

JEE Main 2024 (Online) 30th January Morning Shift

MCQ (Single Correct Answer)

-1

Young's modules of material of a wire of length '$$L$$' and cross-sectional area $$A$$ is $$Y$$. If the length of the wire is doubled and cross-sectional area is halved then Young's modules will be :

4 Y

2 Y

$$\mathrm{\frac{Y}{4}}$$

JEE Main 2024 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

-1

A small liquid drop of radius $$R$$ is divided into 27 identical liquid drops. If the surface tension is $$T$$, then the work done in the process will be:

$$4 \pi \mathrm{R}^2 \mathrm{~T}$$

$$8 \pi R^2 \mathrm{~T}$$

$$\frac{1}{8} \pi R^2 T$$

$$3 \pi R^2 \mathrm{~T}$$

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