1
JEE Main 2023 (Online) 25th January Morning Shift
+4
-1

Match List I with List II

List I List II
A. Surface tension I. $$\mathrm{kg~m^{-1}~s^{-1}}$$
B. Pressure II. $$\mathrm{kg~ms^{-1}}$$
C. Viscosity III. $$\mathrm{kg~m^{-1}~s^{-2}}$$
D. Impulse IV. $$\mathrm{kg~s^{-2}}$$

Choose the correct answer from the options given below :

A
A-IV, B-III, C-I, D-II
B
A-IV, B-III, C-II, D-I
C
A-I, B-I, C-III, D-IV
D
A-III, B-IV, C-I, D-II
2
JEE Main 2023 (Online) 25th January Morning Shift
+4
-1
Out of Syllabus

A bowl filled with very hot soup cools from 98$$^\circ$$C to 86$$^\circ$$C in 2 minutes when the room temperature is 22$$^\circ$$C. How long it will take to cool from 75$$^\circ$$C to 69$$^\circ$$C?

A
2 minutes
B
0.5 minute
C
1.4 minutes
D
1 minute
3
JEE Main 2023 (Online) 24th January Evening Shift
+4
-1

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Steel is used in the construction of buildings and bridges.

Reason R : Steel is more elastic and its elastic limit is high.

In the light of above statements, choose the most appropriate answer from the options given below

A
Both A and R are correct and R is the correct explanation of A
B
A is correct but R is not correct
C
Both A and R are correct but R is NOT the correct explanation of A
D
A is not correct but R is correct
4
JEE Main 2023 (Online) 24th January Evening Shift
+4
-1

The frequency ($$\nu$$) of an oscillating liquid drop may depend upon radius ($$r$$) of the drop, density ($$\rho$$) of liquid and the surface tension (s) of the liquid as $$\nu=r^a\rho^b s^c$$. The values of a, b and c respectively are

A
$$\left( {{3 \over 2},{1 \over 2}, - {1 \over 2}} \right)$$
B
$$\left( { - {3 \over 2}, - {1 \over 2},{1 \over 2}} \right)$$
C
$$\left( {{3 \over 2}, - {1 \over 2},{1 \over 2}} \right)$$
D
$$\left( { - {3 \over 2},{1 \over 2},{1 \over 2}} \right)$$
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