General Physics Questions And Answers


Q1. 
Identify the electromagnetic wave which is also known as heatwaves.

Ans.
Infrared Waves


Q2. 
Pick out the electromagnetic wave which is highly harmful to humans.

Ans.
Ultraviolet Rays


Q3. 
Stephen is thinking of going to the hospital for checking whether he has tuberculosis since he believes that he may have some early symptoms of the disease. His friend suggests him to do an x-ray checkup to clear up the confusion. Is the suggestion made by Stephen’s friend going to help him?

Ans.
False


Q4. 
Monica wanted to take photographs of a monument. But since the surrounding is filled with smoke, she is not able to take good photos. Which one of the following electromagnetic waves can be used in this situation to help Monica?

Ans.
Infrared waves


Q5. 
Which of the following cannot travel in vacuum?

Ans.
Infrasonic waves


Q6. 
Which of the following is a necessary condition for total internal reflection?

Ans.
The angle of incidence in the denser medium must be greater than the critical angle for the two media


Q7.
Which of the following color is the ocean?

Ans.
Blue


Q8. 
The secondary rainbow is brighter than the primary rainbow.

Ans.
False


Q9. 
‘X’ is an optical illusion observed in deserts or over hot extended surfaces like a coal-tarred road, due to which a traveler sees a shimmering pond of water some distance ahead of him and in which the surrounding objects like trees appear inverted. Identify X.

Ans.
Mirage


Q10. 
Identify the principle behind the sparkling of diamonds.

Ans.
Total internal reflection