1k. i ws givin a dimensional approach.
A - p,r,s,t
B - p,q
C - p,r,s,t
D - p,,r,t
Column I Column II
(A) Work (p) ML2T-2
(B) Torque (q) N-m
(C) Energy (Mechanical) (r) cal
(D) Thermal energy (s) kgm2/s2
(t) Joule
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11 Answers
1
24Work=ML2T-2,Cal,Joule
Torque=ML2T-2,Nm
Energy(Mechanical)=ML2T-2,Cal,joule,kgm2s2
Energy(Thermal)=ML2T-2,Cal,Joule
24in mech energy its kgm2/s2 and not kgm2s2 as i wrote by mistake[1]
106BT gave the answer as
(A) − (p), (s), (t);
(B) − (p), (q), (s);
(C) − (p), (s), (t);
(D) − (p), (r), (s), (t)
24kgm2/s2 is not used for thermal enrgy/ work
so they are wrong..
and cal term is used very often..so I dont see any rason why they marked it wrong...what ans did u mark ?
106i had marked:
it must be written on ur question paper .. (that i had scanned)
3the unit calorie as far as i have studied was not used for mechanical energy,it is used for energy which are of the form of heat.