Subject :NSO Class : Class 7
At room temperature the internal and external radii of a metal ring are r1 and r2 as shown in the figure. When the ring is heated at 100°C, then
Ar1 decreases and r2 decreases
Br1 decreases and r2 increases
Cr1 increases and r2 decreases
Dr1 increases and r2 increases.
Wrong in previous paper same question answer was given as opt A
Ans 1:
Class : Class 8
Wrong in previous paper same question answer was gifen as option A
Ans 2:
Class : Class 8
Ans 3:
Class : Class 8