JEE Main 2024 (Online) 29th January Morning Shift | Units & Measurements Question 31 | Physics

JEE Main 2024 (Online) 29th January Morning Shift

MCQ (Single Correct Answer)

-1

The resistance $$R=\frac{V}{I}$$ where $$\mathrm{V}=(200 \pm 5) \mathrm{V}$$ and $$I=(20 \pm 0.2) \mathrm{A}$$, the percentage error in the measurement of $$\mathrm{R}$$ is :

5.5%

3.5%

JEE Main 2024 (Online) 27th January Evening Shift

MCQ (Single Correct Answer)

-1

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

Assertion (A) : In Vernier calliper if positive zero error exists, then while taking measurements, the reading taken will be more than the actual reading.

Reason (R) : The zero error in Vernier Calliper might have happened due to manufacturing defect or due to rough handling.

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

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

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

(A) is true but (R) is false

(A) is false but (R) is true

JEE Main 2024 (Online) 27th January Morning Shift

MCQ (Single Correct Answer)

-1

Given below are two statements :

Statement (I) : Planck's constant and angular momentum have same dimensions.

Statement (II) : Linear momentum and moment of force have same dimensions.

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

Statement I is true but Statement II is false

Both Statement I and Statement II are false

Both Statement I and Statement II are true

Statement I is false but Statement II is true

JEE Main 2023 (Online) 15th April Morning Shift

MCQ (Single Correct Answer)

-1

The speed of a wave produced in water is given by $v=\lambda^{a} g^{b} \rho^{c}$. Where $\lambda, g$ and $\rho$ are wavelength of wave, acceleration due to gravity and density of water respectively. The values of $a, b$ and $c$ respectively, are :

$\frac{1}{2}, 0, \frac{1}{2}$

$1,1,0$

$1,-1,0$

$\frac{1}{2}, \frac{1}{2}, 0$

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