Optic receptors get stimulations from vision by eyes.
A person stopping at a red traffic light due to that person gets the vision signals by optic receptors.
Auditory receptors are stimulated by hearing sounds by ears.
A student giving an answer in response to a verbal question is because of the auditory receptors.
Photoreceptors are stimulated due to the light.
Example: a sunflower turns towards the light due to the photoreceptors.
Skin receptors can feel touch, temperature and pain.
Hence, a cat's fur rising when touched due to the skin receptors.