Question Text
Question 1 :
An erect image is formed when an object is placed near in front of a mirror but the inverted image is formed when the object is placed away from the mirror. The mirror is
Question 2 :
an object is placed 20 cm from the concave mirror of focal length 10 cm the image is formed at
Question 3 :
In which of the following media velocity of the light will be maximum
Question 4 :
refractive index of glass with respect to air is 3/2 then the refractive index of air with respect to glass will be
Question 5 :
radius of curvature of 20 CM of concave lens. Its focal length will be
Question 6 :
Change in focal length of an eye lens is caused by the action of
Question 10 :
if 1.5 ampere current is flowing through the wire of resistance 1.5 ohm then potential difference between ends of the wire will be
