Question Text
Question 3 :
In old age farsightedness is a defect of eye in man, in which
Question 4 :
When the light rays converge at a point in front of the retina and then divert to form a blurred image on it, the defect is known as<br>
Question 5 :
The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called ____________.
Question 6 :
A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed<br>
Question 7 :
The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called ____________.
Question 8 :
Two point white dots are 1 mm apart on a black paper. They are viewed by eye of diameter $3\ mm $.<br/>Approximately, what is the maximum distance at which these dots can be resolved by the eye?<br/>[ take wavelength of light >500nm]
Question 9 :
The angular magnification of telescope is $30$. If all the light which passes through objective lens of diameter $80 cm$ also passes through eye piece lens then find out diameter of eye piece lens.
Question 12 :
The defective condition of accommodation of the eye in which distant objects are clearly seen but near objects are indistinct is<br>
Question 13 :
A normal eye is not able to see objects closer than $25$cm because?
Question 15 :
One of the following is not an example of incomplete sex-linkage
