Physics
Three metals, A, B and C, are supplied with the same quantity of heat. Their masses are in the ratio 2 : 3 : 4. If they show the same rise in the temperature, then the ratio of their thermal capacities will be:
- 1:1:1
- 4:3:2
- 2:3:4
- 2:3:1
Related Questions
The below picture shows three cylinders filled with water to a different extent. The tuning forks L, M and N in vibration produce louder sound when held above the mouth of the cylinders. Which combination is correct for hearing a louder sound of the tuning fork?
- L – R, M – Q, N – P
- L – P, M – Q, N – R
- L – R, M – P, N – Q
- L – Q, M – R, N – P
The below diagram shows different copper conductors of diameters d and 2d and lengths, which are multiples of l. The increasing order of their resistances will be:
- A < B < C < D
- A < C < D < B
- A < D < C < B
- D < A < C < B
The diagram shows the magnificent dome at Gol Ghumbaz at Bijapur. A boy standing at A whispers, and it is clearly heard at B across the huge dome.
[Speed of sound is 330 ms-1]
Assertion (A) : The distance travelled by sound waves (x+y) should be < 33 m.
Reason (R) : Sound reflected within 0.1 s is not heard by humans.
- A and R are true, and R is the reason for A.
- A and R are true, and R is not the reason for A.
- A is true, but R is false.
- A is false, but R is true.