Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6).

A microscope is a scientific instrument. It makes things normally too small to be seen look larger. This way they can be seen better and examined correctly. People who use microscopes commonly in their jobs include doctors and scientists. Microscopes are commonly used in schools to help students in science classes such as biology or chemistry.

The earliest microscopes had only one lens and are called simple microscopes. Compound microscopes have at least two lenses. In a compound microscope, the lens closer to the eye is called the eyepiece. The lens at the other end is called the objective. The lenses multiply up, so a 20x eyepiece and a 60x objective together give 1200x magnification.

Types of microscopes

There are many different types of microscopes. The most common are compound light microscopes and electron microscopes. In a compound light microscope, the object is illuminated: light is thrown on it. The image formed by the object is looked at. Light passes through two lenses and makes the image bigger.

Electron microscopes come in different types. Transmission electron microscopes (TEMs) fire electrons into the object being looked at. This carries information about how the object looks into a magnetic “lens”. The image is then magnified onto a television screen. Scanning electron microscopes also fire electrons at the object, but in a single beam. These lose their power when they strike the object, and the loss of power results in something else being generated—usually an X-ray. This is sensed and magnified onto a screen.

Value Addition UKPCS Mains : Uttarakhand Special (Click Here)

UKPCS Mains Study Material subject wise

The notes are strictly as per UKPCS syllabus (topic wise):

• UKPCS Polity sample notes click here

Individual Polity Cost: Rs. 1500/- (including shipping)

• UKPCS Science sample notes click here

Individual S&T Cost: Rs. 1500/- (including shipping)

• UKPCS Geography sample notes click here

Individual Geography Cost: Rs. 1500/- (including shipping)

• UKPCS Economics Sample notes click here

Individual Economics Cost: Rs. 1000/- (including shipping)

• UKPCS Ethics Sample Notes click here

Individual Ethics Cost: Rs. 1000/- (including shipping)

• UKPCS History Sample Notes click here

Individual History Cost: Rs. 1500/- (including shipping)

• • • • • • • • UKPCS Study Material (Click Here)

                UKPCS Answer Writing Program (Click Here)

                UKPCS Mains Test Series (Click Here)

                UKPCS Best Copies and Tips (Click Here)

              • Call/WhatsApp –> 9997453844

• Author
• Recent Posts

Hemant Bhatt

Chief Mentor at Oracle IAS

Hemant Bhatt is a B. Tech from Pantnagar University and has studied Social Sciences at SciencesPo, Paris. He teaches at Oracle IAS, Dehradun. He has given 5 UPSC mains back to back along with 2 interviews.
He is a bibliophile,accomplished writer and a fitness enthusiast.

Latest posts by Hemant Bhatt (see all)

• Uttarakhand PCS 2025: Prelims Course Hindi Medium || Oracle IAS - November 21, 2024
• Prepare for Lower PCS Uttarakhand Exam 2025 with Oracle IAS - September 23, 2024
• Uttarakhand Lower PCS 2024 || Oracle IAS - September 19, 2024