Advertisements
Advertisements
How does the angle of minimum deviation produces by a prism change with increase in :
the wavelength of incident light
Concept: undefined >> undefined
How does the angle of minimum deviation produces by a prism change with increase in :
the refracting angle of prism?
Concept: undefined >> undefined
Advertisements
Answer the following questions in your own words.
What is meant by scattering of light?
Concept: undefined >> undefined
How does the intensity of scattered light depend on the wavelength of incident light? State conditions when this dependence holds.
Concept: undefined >> undefined
The sky at noon appears white. Give reason.
Concept: undefined >> undefined
What is meant by the natural frequency of vibration of a body?
Concept: undefined >> undefined
What are non-ohmic reistors? Give one example and draw a graph to show its current-voltage relationship.
Concept: undefined >> undefined
On What factors does the natural frequency of vibration of a body depend?
Concept: undefined >> undefined
Give two difference between an ohmic and non-ohmic resistor.
Concept: undefined >> undefined
The following figure shows the I-V characteristic curves for two resistors. Identify the ohmic and non-ohmic resistors. Give a reason for your answer.
 |
 |
| (a) | (b) |
Concept: undefined >> undefined
State one condition for a body to execute free/natural vibrations.
Concept: undefined >> undefined
- Name one factor on which the frequency of sound emitted due to vibrations in an air column depends.
- How does the frequency depend on the factor stated in part (a).
Concept: undefined >> undefined
State one way of increasing the frequency of a note produced by an air column.
Concept: undefined >> undefined
State two ways of increasing the frequency of vibrations of a stretched string.
Concept: undefined >> undefined
Explain why strings of different thicknesses are provided on a stringed instrument.
[Hint: Natural frequency of vibration of a stretched string is inversely proportional to the radius (or thickness) of string so notes of different frequencies can be produces by vibrating different strings.]
Concept: undefined >> undefined
A blade, fixed at one end, is made to vibrate by pressing its other end and then releasing it. State one way in which the frequency of vibrations of the blade can be lowered.
Concept: undefined >> undefined
A wire stretched between two fixed supports, is plucked exactly in the middle and then released. It executes (neglect the resistance of the medium) ______.
Concept: undefined >> undefined
Explain the working of a gear system.
Concept: undefined >> undefined
Explain how a gear system can be used to obtain gain in speed? Given one example.
Concept: undefined >> undefined
