CBSE Class 10 Science 2017 Delhi Term II Set 1 Paper

Question : 30 of 36

Marks: +1, -0

Three students A, B and C focussed a distant building on a screen with the help of a concave mirror. To determine focal length of the concave mirror they measured the distances as given below :
Student A : From mirror to the screen
Student B : From building to the screen
Student

C

: From building to the mirror
Who measured the focal length correctly?

Only A
A and B
Only B
B and C

Solution:

Go to Question:

Prev Question

Next Question