Download App

Ray Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsRay Optics1 Mark
Question
An object is immersed in a fluid. In order that the object becomes invisible, it should(a) Behave as a perfect reflector(b) Absorb all light falling on it(c) Have refractive index one(d) Have refractive index exactly matching with that of the surrounding fluid
 
 
 
 
✓

Answer

(d) Have refractive index exactly matching with that of the surrounding fluid

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Ray Optics→Ray Optics — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

To get maximum current in a resistance of 3 ohms, one can use n rows of m cells (connected in series) connected in parallel. If the total number of cells is 24 and the internal resistance of a cell is 0.5 ohms then:
→
The velocity of photon is proportional to $($where $v$ is frequency$)$
→
The rate of disintegration at a given instant, is directly proportional to the number of atoms present at that instant. This is the statement of:
→
What is the de$-$Broglie wavelength of the $\alpha-$particle accelerated through a potential difference $V$
→
A radioactive substance emits(a) Electromagnetic radiation(b) Electrons revolving around the nucleus(c) Charged particles(d) a,c
   
   
→
Which of the following are electromagnetic waves?
  1. $\alpha-\text{decay}$
  2. $\beta^+-\text{decay}$
  3. $\beta^--\text{decay}$
  4. $\gamma-\text{decay}$
→
When $_{92}U^{235}$ undergoes fission, $0.1\%$ of its original mass is changed into energy. How much energy is released if $1\ kg$ of $_{92}U^{235}$  undergoes fission
→
The sum of the reciprocals of object distance and image distance is equal to the __________ of a mirror.
→
A person's near point is 50 cm and his far point is 3 m. Power of the lenses he requires for
(i)  reading and  (ii) for seeing distant stars are(a) – 2 D and 0.33 D(b) 2 D and – 0.33 D(c) – 2 D and 3 D(d) 2 D and – 3 D
       
→
Refraction of light occurs:
→