Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
E-Mail*
You must login to ask question.
Username or email*
Password*
(b) 30 cm in front of the mirror
(a) A convex lens has 4 dioptre power having a focal length 0.25 m
(d) Convex lens
(c) When object is placed between the focus and center of curvature
(b) - 20 cm
(b) – 20 cm
Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?
(b) 30 cm in front of the mirror
(b) 30 cm in front of the mirror
See lessWhich of the following statements is/are true?
(a) A convex lens has 4 dioptre power having a focal length 0.25 m
(a) A convex lens has 4 dioptre power having a focal length 0.25 m
See lessA beam of light is incident through the holes on side A and emerges out of the hole on the other face of the box as shown in the figure. Which of the following could be inside the box?
(d) Convex lens
(d) Convex lens
See lessUnder which of the following conditions a concave mirror can form an image larger than the actual object
(c) When object is placed between the focus and center of curvature
(c) When object is placed between the focus and center of curvature
See lessA l0 mm long awl pin is placed vertically in front of a concave mirror. A5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
(b) - 20 cm
(b) – 20 cm
See less