In case of a compound microscope which of the following statements is / are correct? 1. The focal length of the eye piece is larger than the focal length of the objective 2. The focal length of the eye piece is smaller than the focal length of the objecti

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Q: 16 (NDA-II/2015)
In case of a compound microscope which of the following statements is / are correct?
1. The focal length of the eye piece is larger than the focal length of the objective
2. The focal length of the eye piece is smaller than the focal length of the objective
3. The image produced in a normal optical microscope is real
4. The image produced in a normal optical microscope is virtual
Select the correct answer using the code given below:

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,28,37,9,28,16,12

keywords: 

{'compound microscope': [0, 0, 0, 2], 'normal optical microscope': [0, 0, 0, 1], 'focal length': [1, 0, 5, 7], 'eye piece': [0, 0, 0, 2], 'image': [0, 1, 3, 23]}

In a compound microscope, there are two lenses: the objective lens and the eyepiece.

Option 1 states that the focal length of the eyepiece is larger than the focal length of the objective. This statement is incorrect. In a compound microscope, the objective lens has a shorter focal length compared to the eyepiece. The objective lens is responsible for collecting the light from the specimen and creating a magnified real image at its focal point.

Option 2 states that the focal length of the eyepiece is smaller than the focal length of the objective. This statement is correct. The eyepiece is placed after the objective lens and its purpose is to further magnify the real image created by the objective. The eyepiece has a longer focal length than the objective, allowing for greater magnification.

Option 3 states that the image produced in a normal optical microscope is real. This statement is incorrect. In a compound microscope, the image formed by the objective lens is real and inverted, but the eyepiece lens magnifies the image and makes it appear virtual and upright to the observer.

Option 4 states that the image produced in a normal optical microscope is virtual. This statement is correct. The image formed by the objective lens is