Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

two rods of lengths l 1 and l 2 are made of materials whose co-efficient of linear expansion are a 1 an a 2. ​If the increase in length be same at all temperatures then (i) l 1 / l 2= a 1 /a 2 (ii) l 1 / l 2= a 2 /a 1 (iii) l 1 + a 1 = l 2 + a 2 (iv) l 1 /a 1 2 =l 2 /a 2 2

two rods of lengths l1 and l2 are made of materials whose co-efficient of linear expansion are aan a2. ​If the increase in length be same at all temperatures then
(i) l1/l2=a1/a2
(ii) l1/l2=a2/a1
(iii)  l1 + a1 = l2 + a2 
(iv) l1/a12=l2/a22

Grade:11

1 Answers

arun
123 Points
5 years ago
answer is (ii). it is given that change in length is same for both rods. now,
{\color{Red} \Delta l=laT}                           
here, red coloured l, a represents the l1 and a1
and green coloured represents l2 and a2 
{\color{Green} \Delta l=laT}
and it is given{\color{Green} \Delta l}={\color{Red} \Delta l}
\Rightarrow {\color{Red} lat}={\color{Green} lat}
also{\color{Red} t}={\color{Green}t}
\Rightarrow \frac{{\color{Red} l}}{{\color{Green} l}}=\frac{{\color{Green} a}}{{\color{Red} a}}
so l1/l2=a2/a1

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free