Light - Study Mode
[#191] Which combination of colour is the most convenient during day and night time?
Correct Answer
(D) Red and green
[#192] Lenses with two focal lengths are used by persons suffering from . . . . . . . .
Correct Answer
(A) Myopia and hypermetropia
[#193] Which one of the following statements regarding lenses is not correct?
Correct Answer
(B) A concave lens produces both real and virtual images
[#194] Consider the following statements. 1. If a person looks at a coin which is in a bucket of water, the coin will appear to be closer than it really is. 2. If a person under water looks at a coin above the water surface, the coin will appear to be at a higher level than it really is. Which of the above statements is/are correct?
Correct Answer
(A) Both 1 and 2
[#195] Due to atmospheric refraction, sunrise and sunset can be delayed by about . . . . . . . .
Correct Answer
(B) 2 minutes