JEE Main 2019 (Online) 9th April Evening Slot | Properties of Matter Question 124 | Physics

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

A wooden block floating in a bucket of water has 4/5 of its volume submerged. When certain amount of an oil is poured into the bucket, it is found that the block is just under the oil surface with half of its volume under water and half in oil. The density of oil relative to that of water is :-

0.8

0.7

0.6

0.5

JEE Main 2019 (Online) 9th April Evening Slot

MCQ (Single Correct Answer)

-1

Two materials having coefficients of thermal conductivity '3K' and 'K' and thickness 'd' and '3d', respectively, are joined to form a slab as shown in the figure. The temperatures of the outer surfaces are '$$\theta $$₂' and '$$\theta $$₁' respectively, ($$\theta $$₂ > $$\theta $$₁). The temperature at the interface is :- JEE Main 2019 (Online) 9th April Evening Slot Physics - Properties of Matter Question 124 English

JEE Main 2019 (Online) 9th April Evening Slot Physics - Properties of Matter Question 124 English

$${{{\theta _1}} \over {10}} + {{9{\theta _2}} \over {10}}$$

$${{{\theta _2} + {\theta _1}} \over 2}$$

$${{{\theta _1}} \over {6}} + {{5{\theta _2}} \over {6}}$$

$${{{\theta _1}} \over {3}} + {{2{\theta _2}} \over {3}}$$

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

A simple pendulum oscillating in air has period T. The bob of the pendulum is completely immersed in a non-viscous liquid. The density of the liquid is 1/16 th of the material of the bob. If the bob is inside liquid all the time, its period of oscillation in this liquid is :

$$2T\sqrt {{1 \over {10}}} $$

$$4T\sqrt {{1 \over {14}}} $$

$$4T\sqrt {{1 \over {15}}} $$

$$2T\sqrt {{1 \over {14}}} $$

JEE Main 2019 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-1

If 'M' is the mass of water that rises in a capillary tube of radius 'r', then mass of water which will rise in a capillary tube of radius '2r' is :

M/2

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