Question
Soap bubbles appear colored when seen in white light. The reason for this phenomenon is :
✓
Answer
(B) - Interference.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
One end of a light spring of spring constant k is fixed to a wall and the other end is tied to a block placed on a smooth horizontal surface. In a displacement, the work done by the spring is $\frac{1}{2}\text{kx}^2.$ The possible cases are:
→- At spring was initially compressed by a distance x and was finally in its natural length.
- It was initially stretched by a distance x and and finally was in its natural length.
- It was initially in its natural length and finally in a compressed position.
- It was initially in its natural length and finally in a stretched position.
The maximum peak to peak voltage of an AM wire is 24 mV and the minimum peak to peak voltage is 8 mV. The modulation factor is(a) 10% (b) 20%(c) 25% (d) 50%
A dielectric slab is inserted between the plates of an isolated capacitor. The force between the plates will:
When the number of nucleons in a nucleus increases, the binding energy per nucleon:
If the current in the circuit for heating the filament is increased, the cutoff wavelength:
- Will increase.
- Will decrease.
- Will remain unchanged.
- Will change.
In the circuit shown in the figure, (neglecting source resistance) the voltmeter and ammeter readings will respectively be.
An LC resonant circuit contains a 400 pF capacitor and a 100 mH inductor. It is set into oscillation coupled to an antenna. The wavelength of the radiated electromagnetic waves is(a) 377 mm(b) 377 metre(c) 377 cm(d) 3.77 cm
The creation of voltage or electric current in a material upon exposure to light is termed as:
Ratio of the wavelengths of first line of Lyman series and first line of Balmer series is(a) 1: 3(b) 27 : 5(c) 5 : 27 (d) 4 : 9
The plane surface of a plano$-$convex lens of focal length $f$ is silvered. It will behave as
→