In torches, search lights and headlights of vehicles the bulb is placed [NCERT Exemplar Problems]
A. between the pole and the focus of the reflector
B. very near to the focus of the reflector
C. between the focus and centre of curvature of the reflector
D. at the centre of curvature of the reflector
Answer:B
In torches, search lights and headlights of vehicles the bulb is placed [NCERT Exemplar Problems]
A. between the pole and the focus of the reflector B. very near to the focus of the reflector C. between the focus and centre of curvature of the reflector D. at the centre of curvature of the reflector