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Friday Science Quiz #4

Good morning everyone, here is the set of 7 questions on Science and Technology to judge your preparation. Attempt these questions and write your answer in comment section.

Q.1) Consider the following statements.
1. Ability of the lens to converge or diverge light rays depend upon its focal length.
2. A concave lens of very short focal length causes less divergence than a very long focal length concave lens.

Select the correct statement using the codes given below.
a) 1 only
b) 2 only
c) Both 1 and 2
d) None of the above

 

Q.2) Arrange the following in decreasing order of refractive indexes.
1. Water
2. Air
3. Ice

Select the correct answer using the codes given below.
a) 3 >1 > 2
b) 1 > 3 >2
c) 3 > 2 > 1
d) 1 > 2 > 3

 

Q.3) Convex mirrors are used commonly for rare view mirror. This is because:
1. It gives inverted and diminished image.
2. It has a wider field of view as they are curved inwards.

Select the correct answer using the codes given below.
a) 1 only
b) 2 only
c) Both 1 and 2
d) None of the above

 

Q.4) Which of the following are applications of Raman effect:
1. Monitoring of chemical purity in petro chemical industry
2. Identification of cancer
3. Study of gravity in black holes
4. Detection of Narcotics

Select the correct answer using the codes given below.
a) 2, 3 and 4 only
b) 1, 2 and 3 only
c) 1, 2 and 4 only
d) 1, 2, 3 and 4

 

Q.5) Consider the following statements about smart grid project.
1. It is the project of Union Ministry of water resources for solving water shortage.
2. Ranchi is selected as a first place to have smart grid system.

Select the incorrect statement using the codes given below.
a) 1 only
b) 2 only
c) Both 1 and 2
d) None of the above

Q.6) Consider the following statements regarding the human eye.
1. Light enters the eye through a thin membrane known as pupil
2. Iris controls the size of the cornea
3. Eye lens always forms real and erect image on the retina.

Which of the above statements are true in the respect of anatomical structure of human eye?
a) 1 and 2 only
b) 1,  2 and 3
c) None of the above
d) 3 only

Q.7) Consider the following statements regarding eye donation:
1. Eye donors can belong to only some specific age bracket as per as WHO convention
2. People who use spectacles, or operated with cataract, who are diabetic, or have hypertension and who are asthma patients can not donate their eyes.
3. People infected with rabies and cholera can donate their eyes.

Select the correct statement using the codes given below.
a) 1 only
b) 2 and 3 only
c) 1, 2 and 3
d) None of the above

 

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