Practice question

Question

Match the microscopes in Group I with their working principles in Group II Group I (Microscopy Type) Group II (Description/Mechanism) P. Phase contrast I. Light reaches the specimen only from the sides Q. Dark field II. Uses fluorescent dyes R. Bright field III. Difference in the refractive index of cells from their surrounding medium S. Electron microscopy IV. Difference in contrast between specimen and its surrounding medium V. Uses electrons instead of photons as energy source