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Questions and Answers
What is the final image viewed by a compound microscope?
What is the final image viewed by a compound microscope?
Which of the following is more penetrating?
Which of the following is more penetrating?
Which of the following are not electromagnetic in nature?
Which of the following are not electromagnetic in nature?
What is the speed of sound in vacuum?
What is the speed of sound in vacuum?
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Shrill sounds have which of the following properties?
Shrill sounds have which of the following properties?
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An object is placed at a distance of 60cm from a convex mirror with a focal length of 30cm. What is the position of the image?
An object is placed at a distance of 60cm from a convex mirror with a focal length of 30cm. What is the position of the image?
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What is the value of 250mm in centimeters?
What is the value of 250mm in centimeters?
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What type of vision defect is characterized by the ability to see distant objects clearly but not close objects?
What type of vision defect is characterized by the ability to see distant objects clearly but not close objects?
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What is the value of 0.25m in centimeters?
What is the value of 0.25m in centimeters?
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If the frequency of a wave is 30Hz and the wavelength is 0.2m, what is the velocity of the wave?
If the frequency of a wave is 30Hz and the wavelength is 0.2m, what is the velocity of the wave?
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If the object distance (q) is 4cm and the image distance (p) is 2cm, what is the magnification of the concave lens?
If the object distance (q) is 4cm and the image distance (p) is 2cm, what is the magnification of the concave lens?
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Study Notes
Compound Microscope Imaging
- The final image viewed by a compound microscope is virtual, inverted, and enlarged.
Penetrating Properties
- In terms of penetrating ability, gamma rays are more penetrating than X-rays, ultraviolet light, or visible light.
Electromagnetic Nature
- Sound waves and mechanical waves are not electromagnetic in nature.
- Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
Speed of Sound
- The speed of sound in a vacuum is zero, as sound requires a medium to travel and does not propagate in a vacuum.
Properties of Sound
- Shrill sounds have a high frequency and shorter wavelength, leading to a higher pitch.
Image Position in Convex Mirror
- For an object placed 60 cm from a convex mirror with a focal length of 30 cm, the image position can be calculated using the mirror formula: 1/f = 1/v + 1/u. The image is virtual and located at a distance of 20 cm behind the mirror.
Unit Conversion
- 250 mm equals 25 cm; conversion requires dividing millimeters by 10.
- 0.25 m equals 25 cm; conversion requires multiplying meters by 100.
Vision Defect
- The vision defect characterized by the ability to see distant objects clearly but not near objects is known as hyperopia or farsightedness.
Wave Velocity Calculation
- If the frequency of a wave is 30 Hz and the wavelength is 0.2 m, velocity can be calculated using the formula: velocity = frequency × wavelength, resulting in 6 m/s.
Magnification of a Concave Lens
- For a concave lens with an object distance (q) of 4 cm and an image distance (p) of 2 cm, magnification is given by the formula: magnification = -p/q, yielding a value of 0.5.
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Description
Test your knowledge of compound microscopes in physics with this multiple-choice quiz. Questions cover topics such as final image, lens material, and electromagnetic rays. Choose the correct answer from the options provided.
