JEE Main 2023 (Online) 25th January Evening Shift | Units & Measurements Question 44 | Physics

1

JEE Main 2023 (Online) 25th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List I		List II
A.	Young's Modulus (Y)	I.	$$\mathrm{[ML^{-1}T^{-1}]}$$
B.	Co-efficient of Viscosity ($$\eta$$)	II.	$$\mathrm{[ML^2T^{-1}]}$$
C.	Planck's Constant (h)	III.	$$\mathrm{[ML^{-1}T^{-2}]}$$
D.	Work function ($$\varphi $$)	IV.	$$\mathrm{[ML^2T^{-2}]}$$

Choose the correct answer from the options given below :

A

A-II, B-III, C-IV, D-I

B

A-I, B-II, C-III, D-IV

C

A-I, B-III, C-IV, D-II

D

A-III, B-I, C-II, D-IV

2

JEE Main 2023 (Online) 24th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List-I		List-II
A.	Planck's constant (h)	I.	$$\mathrm{[{M^1}\,{L^2}\,{T^{ - 2}}]}$$
B.	Stopping potential (Vs)	II.	$$\mathrm{[{M^1}\,{L^1}\,{T^{ - 1}}]}$$
C.	Work function ($$\phi$$)	III.	$$\mathrm{[{M^1}\,{L^2}\,{T^{ - 1}}]}$$
D.	Momentum (p)	IV.	$$\mathrm{[{M^1}\,{L^2}\,{T^{ - 3}}\,{A^{ - 1}}]}$$

Choose the correct answer from the options given below :

A

A-I, B-III, C-IV, D-II

B

A-III, B-IV, C-I, D-II

C

A-II, B-IV, C-III, D-I

D

A-III, B-I, C-II, D-IV

3

JEE Main 2022 (Online) 29th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II.

	List I		List II
A.	Torque	I.	Nms$$^{ - 1}$$
B.	Stress	II.	J kg$$^{ - 1}$$
C.	Latent Heat	III.	Nm
D.	Power	IV.	Nm$$^{ - 2}$$

Choose the correct answer from the options given below :

A

A-III, B-II, C-I, D-IV

B

A-III, B-IV, C-II, D-I

C

A-IV, B-I, C-III, D-II

D

A-II, B-III, C-I, D-IV

4

JEE Main 2022 (Online) 29th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements : One is labelled as Assertion (A) and other is labelled as Reason (R).

Assertion (A) : Time period of oscillation of a liquid drop depends on surface tension (S), if density of the liquid is $$\rho$$ and radius of the drop is r, then $$\mathrm{T}=\mathrm{K} \sqrt{\rho \mathrm{r}^{3} / \mathrm{S}^{3 / 2}}$$ is dimensionally correct, where K is dimensionless.

Reason (R) : Using dimensional analysis we get R.H.S. having different dimension than that of time period.

In the light of above statements, choose the correct answer from the options given below.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true but (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true