IIT-JEE 2010 Paper 1 Offline | Units & Measurements Question 29 | Physics

IIT-JEE 2010 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

A student uses a simple pendulum of exactly 1m length to determine g, the acceleration due to gravity. He uses a stop watch with the least count of 1 sec for this and records 40 seconds for 20 oscillations. For this observation, which of the following statement(s) is (are) true?

Error ΔT in measuring T, the time period, is 0.05 seconds

Error ΔT in measuring T, the time period, is 1 second

Percentage error in the determination of g is 5%

Percentage error in the determination of g is 2.5%

IIT-JEE 1998

MCQ (More than One Correct Answer)

-0.5

Let [$${\mathrm\varepsilon}_\mathrm o$$] denote the dimentional formula of the permittivity of the vacuum, and [$$\mu_o$$] that of the permeability of the vacuum.If M = mass, L = length, T = time and I = electric current,

$$\left[{\mathrm\varepsilon}_\mathrm o\right]\;=\;\mathrm M^{-1}\mathrm L^{-3}\mathrm T^2\;\mathrm I$$

$$\left[{\mathrm\varepsilon}_\mathrm o\right]\;=\;\mathrm M^{-1}\mathrm L^{-3}\mathrm T^4\mathrm I^2$$

$$\left[{\mathrm\mu}_\mathrm o\right]\;=\;\mathrm{MLT}^{-2}\mathrm I^{-2}$$

$$\left[{\mathrm\mu}_\mathrm o\right]\;=\;\mathrm{ML}^2\mathrm T^{-1}\;\mathrm I$$

IIT-JEE 1998

MCQ (More than One Correct Answer)

-0.5

The SI unit of inductance, the henry can be written as

weber/ampere

volt-sec/amp

Joule/(ampere)²

ohm-second

IIT-JEE 1995 Screening

MCQ (More than One Correct Answer)

-0.5

The pairs of physical quantities that have the same dimensions is (are):

Reynolds number and coefficient of friction

Curie and frequency of a light wave

Latent heat and gravitational potential

Planck's constant and torque

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