The incorrect statement is (a): “TEM magnifies objects up to Indian time.”

This is because the phrase “Indian time” is nonsensical in this context. Transmission Electron Microscopy (TEM) doesn’t magnify based on time; it can magnify objects up to around 2 million times their size, not related to any time zone or temporal concept.

Now, addressing (d): “IEM produces three-dimensional structures” is correct if “IEM” stands for Immunoelectron Microscopy, a specialized technique used to visualize proteins or other components in biological samples. IEM can provide information on the spatial arrangement of molecules, leading to 3D visualization, though it’s primarily a labeling technique.

To clarify:

• (b): TEM produces 2D images, as it transmits electrons through a thin specimen, showing internal structures in two dimensions.
• (c): SEM produces 3D surface images by scanning a specimen with a focused electron beam, revealing surface topology.
• (d): IEM, through immunolabeling, can offer insights into 3D molecular arrangements.