Download App

Optical Instruments — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsOptical Instruments2 Marks
Question
Can virtual image be formed on the retina in a seeing process?
✓

Answer

The retina acts as a screen; only real images can be obtained on the screen. In case of people having eye defects, the spectacles form the virtual image of the object and the eye lens form the real and inverted image on the retina.

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 "2 Marks Questions" from Optical Instruments→Optical Instruments — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Three process $A, B, C$ of expansion of a gas from initial volume $V_1$ to final volume $V_2$ are shown in the figure tell which of these change is isothermal, isobaric and adiabatic?
→
The torque of a force $\overrightarrow{\text{F}}$ about a point is defined as $\overrightarrow{\text{r}}=\overrightarrow{\text{r}}\times\overrightarrow{\text{F}}.$ Suppose $\overrightarrow{\text{r}}, \overrightarrow{\text{F}}$and $\overrightarrow{\text{r}}$ are all nonzero. Is $\text{r}\times\overrightarrow{\text{r}}\Bigg|\Bigg|\overrightarrow{\text{F}}$ always true? Is it ever true?
→
State few important uses of the phenomenon of beats.
→
A heat engine takes heat $Q_1$ at a temperature of 500 K and gives heat $Q_2$ at a temperature of 300 K to the sink and does $8 \times 10^5$ joules of work. Calculate the magnitude of $Q_1$ and $Q_2$.
→
An ordinary electric fan does not cool the air, still it gives comfort in summer. Explain.
→
It is done to accommodate the linear expansion of railway line during summer. If the gap is not left in summer, the lines will bend causing a threat of derailment.
→
Suppose the platform of the previous problem is brought to rest with the ball in the hand of the kid standing on the rim. The kid throws the ball horizontally to his friend in a direction tangential to the rim with a speed v as seen by his friend. Find the angular velocity with which the platform will start rotating.
→
If $\text{A}=(12.0\pm0.1)\text{cm}$ and $\text{B}=(8.5\pm0.5)\text{cm},$ find:
  1. $\text{A}+\text{B}$
  2. $\text{A}-\text{B}$
→
Name one system where the compressional and tensional modulus of elasticity are different. Give reason.
→
What is the temperature at which all the gas molecule become immobile?
→