Basic Maths and Units and DimensionsHard
Question
A student performing experiment using optical bench observes that when concave mirror is at zero, and tip of object needle is at 10 cm from the pole of the mirror, the fixture of object needle mark reads x cm, and it′s image appears to cover the whole aperture of the mirror. Now, when the object needle is moved to y cm, it′s inverted image coincides with it and parallax is removed, then the bench correction (index correction) can be expressed as (Given bench error is positive for object needle)
(i) x - 10 (ii) y -20 (iii) x + 10 (iv) y + 20
Choose the CORRECT option
(i) x - 10 (ii) y -20 (iii) x + 10 (iv) y + 20
Choose the CORRECT option
Options
A.(i) and (ii
B.(ii) and (iii)
C.(i) and (iv)
D.(iii) and (iv)
Topic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions
More Basic Maths and Units and Dimensions Questions
A man of mass m stands on a platform of equal mass m and pulls himself by two ropes passing over pulleys as shown. If he...Match List-I with List-II. List-I List-II A. Coefficient of viscosity I. $$\left\lbrack {ML}^{- 1}{\text{ }T}^{- 2} \rig...If electronic charge e, electron mass m, speed of light in vacuum c and Planck′s constant h are taken as fundament...In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0 and VCE = 0. The values of IB, IC and β a...A solid sphere rolls down two different inclined planes of same height but of different inclinations, in both cases :-...