1

IIT-JEE 1982

Subjective
Write the dimensions of the followings in terms of mass, time, length and charge
(i) magnetic flux
(ii) rigidity modulus

Answer

(i) [ M1L2T-1Q-1 ]
(ii) [ ML-1T-2 ]
2

IIT-JEE 1981

Subjective
A gas bubble, from an explosion under water, oscillates with a period T proportional to padbEc. Where 'P' is the static pressure, 'd' is the density of water and 'E' is the total energy of the explosion. Find the value of a, b and c.

Answer

a = -5/6, b = 1/2, c = 1/3
3

IIT-JEE 1980

Subjective
Give the MKS units for each of the following quantities.

(i) Young's modulus

(ii) Magnetic Induction

(iii) Power of a lens

Answer

(i) N/m2
(ii) Tesla
(iii) Dioptre

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