Question
An air bubble is formed inside water. Does it act as a converging lens or a diverging lens?

Answer

Diverging.

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

Similar questions

Define its potential energy at a point placed at a distance from a charge q in an external electric field.
An electric lamp and a candle produce equal illuminance at a photometer screen when they are placed at $80\ cm$ and $20\ cm$ from the screen respectively. The lamp is now covered with a thin paper which transmits $49\%$ of the luminous flux. By what distance should the lamp be moved to balance the intensities at the screen again?
Is it always true that the molecules of a dense liquid are heavier than the molecules of a lighter liquid?
The algebraic sum of currents at a point in an electric circuit is zero, then what is that point known as?
Write the importance of Huygens principle. What are the two assumptions of this theory?
Raindrops of radius $1mm$ and mass $4mg$ are falling with a speed of $30m/s$ on the head of a bald person. The drops splash on the head and come to rest. Assuming equivalently that the drops cover a distance equal to their radii on the head, estimate the force exerted by each drop on the head.
In which orientation, a dipole placed in a uniform electric field is in (i) stable, (ii) unstable equilibrium?
Can the peak voltage across the inductor be greater than the peak voltage of the source in an LCR circuit?
The threshold wavelength of a metal is $\lambda_0.$ Light of wavelength slightly less $\tan \lambda_0.$ is incident on an insulated plate made of this metal. It is found that photoelectrons are emitted for some time and after that the emission stops. Explain.
Name the part of electromagnetic spectrum whose wavelength lies in the range of $10^{–10} m.$ Give its one use.