- AReflection
- BRefraction
- CDispersion
- DScattering
Explanation:
In optical instruments, the lenses are used to form images by Refraction.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The de-Broglie wavelength of a neutron at 27oC is l. What will be its wavelength at 927oC
|
(a) l / 2 |
(b) l / 3 |
(c) l / 4 |
(d) l / 9 |
The mass defect in a particular nuclear reaction is 0.3 grams. The amount of energy liberated in kilowatt hours is (Velocity of light = 3
)
|
(a) 1.5 |
(b) 2.5 |
(c) 3 |
(d) 7.5 |
You are given four sources of light each one providing a light of a single colour – red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90º. Which of the following statements is correct if the source of yellow light is replaced with that of other lights without changing the angle of incidence?