Red light travels faster than blue light when both of them pass through a glass prism because the
refractive index of red light is grester than that of blue light
refractive index of blue light is greater than that of red light
red light is more intense than the blue light
blue light is more intense than the red light
Correct answer is D
No explanation has been provided for this answer.
23m
128m
288m
298m
Correct answer is B
V = 2nxE
= 2×1×X0.8=320
2x = 0.8 x 320
x = 0.8×3202
= 128m
real and 6.67cm from the lens
virtual and 6.67cm from the lens
real and 60.00cm from the lens
virtual and 60.00cm from the lens
Correct answer is B
The focal length of a diverging lens is negative.
f = -12 cm; u = 15 cm.
f=uvu+v
−12=15v15+v
−12(15+v)=15v⟹−180−12v=15v
−180=15v+12v⟹−180=27v
v=−18027=−6.67cm
The image is virtual and 6.67 cm from the lens.