The Range of Sight

Q.

Image formed on the retina is

1. Real and inverted

2. Virtual and erect

3. Real and erect

4. Virtual and inverted

Q.

For a normal eye, the least distance of distinct vision is

[CPMT 1984]

1. 0.25 m

2. 0.50 m

3. 25 m

4. Infinite

Q. Match the following for the eye lens:
1. Thicker I. Higher Focal length
2. Thinner II. Lower Focal Length

1. 1-I, 2-II
2. 1-II, 2-I

Q.

For this lens;

1. $R_1$ is +ve, $R_2$ is -ve

2. $R_1$ is -ve, $R_2$ is +ve

3. $R_1$ & $R_2$ are both +ve.

4. $R_1$ & $R_2$ are both -ve.