Explore topic-wise MCQs in Physics Questions and Answers.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Same amount of heat is added to two substances of same mass having specific heat capacities s1 & s2 such that s1 > s2. Select the correct statement.

A. The change in temperature of 1 is greater than the change in temperature of 2
B. The change in temperature of 1 is less than the change in temperature of 2
C. Both will have the same change in temperature
D. Temperature changes can’t be related with specific heat capacities
Answer» C. Both will have the same change in temperature
Discussion
2.

What should be the temperature of 1g of ice, so that when it’s added to 9g of water, lowers the temperature of water by 10°C? Sw = 1cal/ g°C, Sice = 0.5cal/ g°C, Lfus= 80cal/g.

A. 20°C
B. -20°C
C. 0°C
D. 10°C
Answer» C. 0°C
Discussion
3.

30g water at 30°C is mixed with 1g of steam at 100℃. Calculate the final temperature of the mixture. Sw = 1cal/ g°C, Lvap= 540cal/g.

A. 49.67°C
B. 38.33°C
C. 53.67°C
D. 41.33°C
Answer» B. 38.33°C
Discussion
4.

The temperature of 50g of water has to be risen from 15°C to 85°C by using steam at 120°C. What is the amount of steam, in gms, required for the same? Sw= 1cal/ g°C, Lvap = 540cal/g, Ssteam =0.48cal/g°C.

A. 6.29g
B. 8.34g
C. 7.22g
D. 6.19g
Answer» E.
Discussion