EASY
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IMPORTANT
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Important Questions on Introduction to Physics

MEDIUM
JEE Main
IMPORTANT
Choose the correct statement(s):
MEDIUM
JEE Main
IMPORTANT
Find the dimensions of:
(a) linear momentum,
(b) frequency and
(c) pressure.
MEDIUM
JEE Main
IMPORTANT

Find the dimensions of

(a) angular speed ω

(b) angular acceleration α
(c) torque Γ and
(d) moment of inertia I.
Some of the equations involving these quantities are

ω=θ2-θ1t2-t1,  α=ω2-ω1t2-t1,  Γ=r×F and I=mr2.
The symbols have standard meanings.

MEDIUM
JEE Main
IMPORTANT

Find the dimensions of
(a) electric field E,

(b) magnetic field B and

(c) magnetic permeability μ0.
The relevant equations are F=qE, F=qvB, and B=μ0I2πa, where F is force, q is charge, v is speed, I is current, and a is distance.

MEDIUM
JEE Main
IMPORTANT

Find the dimensions of

(a) electric dipole moment, p and

(b) magnetic dipole moment, M.

The defining equations are p=q·d and M=I A, where d is distance, A is area, q is charge and I is current.

EASY
JEE Main
IMPORTANT
Let the dimensions of Planck's constant h from the equation, E=hν, be [Ma Lb Tc] where, E is the energy and ν is the frequency. Then the value of a+b+c will be,
MEDIUM
JEE Main
IMPORTANT

Find the dimensions of
(a) the specific heat capacity c,

(b) the coefficient of linear expansion α and

(c) the gas constant R.

Some equations involving these quantities are Q=mcT2-T1, lt=l01+αT2-T1 and PV=nRT.

MEDIUM
JEE Main
IMPORTANT
Taking force, length and time to be the fundamental quantities find the dimensions of
(a) density,
(b) pressure,
(c) momentum and
(d) energy.