Test Preparation on Ray Optics-V-Physics Test Series For NEET 2020
1.
Identify the wrong description of the above figures
2.
Assuming human pupil to have a radius of 0.25 cm a comfortable viewing distance of 25 cm, the minimum separation between two objects that human eye can resolve at 500 nm wavelength is
3.
The exposure time of a camera lens at the f/2.8 setting is
1/200 second. The correct time of exposure at f/5.6
is
4.
For a normal eye, the cornea of eye provides a converging
power of 40 D and the least converging power of the eye
lens behind the cornea is 20 D. Using the information, the
distance between the retina and the cornea eye lens can be
estimated to be
5.
A student can distinctly see the object upto a distance 15 cm. He wants to see the black board at a distance of 3 m. Focal length and power of lens used respectively will be
