Question 3 :
The phenomenon of return of light in the same medium after striking a surface is called
Question 4 :
What is the relation between wavelength ({tex}\lambda{/tex} ), velocity (V) and frequency (f)?
Question 5 :
In visible light which colour light has maximum deviation when passing through a prism?
Question 7 :
Find the speed of light in glass? (Given, refractive index of glass is = 1.5 and velocity of light in air {tex}3\times10^8{/tex} m/s)
Question 8 :
When a light passing from one denser medium to a rare medium then the velocity of light
Question 11 :
According to the law of reflection of light, the incident ray, the normal at the point of incidence and the reflected ray all lie in one plane. Is it true or false?
Question 13 :
What type lens is used for a person suffering from short slightness?
Question 17 :
The line joining the centers of curvature of the two surfaces of the lens is called _____________________
Question 19 :
If you are looking a distant object through a lens X, an upright image is seen. Can you say what type of lens is it?
Question 20 :
The intensity of the refracted light is always ________________ than the intensity of the incident light.
Question 21 :
For the object placed between optical centre and focus of a convex lens, the image is:
Question 22 :
The maximum magnifying power of a convex lens of focal length 5 cm can be:
Question 23 :
A concave lens forms the image of an object which is:
Question 25 :
The frequency range of visible light is from {tex} 3.75 \times 10^{14} \mathrm{~Hz} {/tex} to {tex} 7.5 \times 10^{14} \mathrm{~Hz} {/tex}. Calculate its wavelength range. Take the speed of light {tex} =3 \times 10^{8} \mathrm{~m} / \mathrm{s} {/tex}