A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen
Light (10)A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
- This device is a concave lens of focal length 8 cm.
- This device is a convex mirror of focal length 8 cm.
- This device is a convex lens of focal length 4 cm.
- This device is a convex lens of focal length 8 cm.
Answer
D
Exam Year:
2015
Related Questions
- One half of a convex lens of focal length 10 cm is covered with a black paper
- If the image formed by a spherical mirror for all positions of the object placed in front of it is always erect and diminished
- A student holding a mirror in his hand, directed the reflecting surface of the mirror
- The ability of a medium to refract light is expressed in terms of its optical density
- A 4 cm tall object is placed on the principal axis of a convex lens
- The absolute refractive indices of glass and water are 4/3 and 3/2 respectively