What happens when you heat china having some dark paintings engraved on it at 1000°C and then examine it in a dark room immediately?

The dark painting will appear much brighter

The whole china dish will be bright

The china dish will develop patterns

Explore topic-wise MCQs in Engineering Physics Questions and Answers.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	What happens when you heat china having some dark paintings engraved on it at 1000°C and then examine it in a dark room immediately?
A.	The dark painting will appear much brighter
B.	The whole china dish will be bright
C.	The china dish doesn’t glow
D.	The china dish will develop patterns
Answer» B. The whole china dish will be bright

Discussion

2.	The outer ends of two bars A and B are at 100°C and 50° respectively. Calculate the temperature at the welded joint if they have the same cross-section and the same length and their thermal conductivities are in the ratio of A:B = 7:5.
A.	79.166°C
B.	80.548°C
C.	20.157°C
D.	58.147°C
Answer» B. 80.548°C

Discussion

Explore topic-wise MCQs in Engineering Physics Questions and Answers.

What happens when you heat china having some dark paintings engraved on it at 1000°C and then examine it in a dark room immediately?

The outer ends of two bars A and B are at 100°C and 50° respectively. Calculate the temperature at the welded joint if they have the same cross-section and the same length and their thermal conductivities are in the ratio of A:B = 7:5.