Q 2353623544.     A 35 mm film is to be projected on a 20 m wide screen situated at a distance of 40 m from the film projector. Calculate the distance of the film from the projection lens and focal length of projection lens.

A

7 cm, 70 mm

B

6 cm, 60 mm

C

5 cm, 50 mm

D

4 cm, 40 mm

Find instant solution to any question from our database of 1.5 Lakh + Questions

 

Access free resources including

Engineering

Medical

Banking

DEFENCE

SSC

RRB

CBSE-NCERT

OLYMPIAD

Today's Score

0
Success Rate: NAN %

Practice & Test

Sr. No.SubjectTagCorrectRecorded Answer