Home
Class 12
PHYSICS
The camera lens has an aperture of f and...

The camera lens has an aperture of f and the exposure time is (1/60)s. What will be the new exposure time if the aperture become 1.4f ?

Doubtnut Promotions Banner Mobile Dark

Text Solution

Verified by Experts

The correct Answer is:
D
Time of exposure `prop f^(2)`
`(1)/(60)xx(1)/(1)=(t)/(1.4^(2))rArr t=0.3266 s`
`t=(1)/(31)s`.
|

Topper's Solved these Questions

  • AIIMS 2006

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

  • AIIMS 2008

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

The exposure time of a camera lens at the `(f)/(2.8)` setting is `(1)/(200) ` second. The correct time of exposure at `(f)/(5.6)` is

A camera objective has an aperture diameter d . If the aperture is reduced to diameter d//2 the exposure time under identical conditions of light should be made

With diaphragm of the camera lens set at `(f)/(2)` , the correct exposure time is `(1)/(100)` , then with diaphragm set at `(f)/(4)`. Calculate the correct exposure time.

The camera lens has an aperture of f and the exposure time is 1/60 s. What will be the new exposure time if the aperture become 1.4 f?

एक कैमरे के लेन्स का द्वारक f है और उदभासन काल (exposure time ) `(1//60)`s है। यदि द्वारक 1.4 f हो जाए , तो न्य उदभासन काल क्या होगा ?

Aperture of lens of a camera is f and its exposure time is (1)/(60) s. If aperture becomes 1.4 f, then what will be the exposure time ?

If we double the aperture of a photographic camera, the new exposure time should be :

If the aperture of a camera is halved then for the given illumination of the object the exposure time should :

A camera objective has an aperture diameter d and exposure time 't'. If the aperture is reduced to d/2. The exposure time will be

If the diameter of the aperture of a camera is doubled. The exposure time should be

The camera lens has an aperture of f and the exposure time is (1/60)s. What will be the new exposure time if the aperture become 1.4f ?

Home
Profile