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Increasing the size of the object
Increasing focal length
johnmulu answered the question on November 1, 2017 at 05:37
- (a) What is electrostatics? (b) Name two types of charges (c) Give the SI units of charge and other smaller units of charges and other smaller units...(Solved)
a. What is electrostatics?
b. Name two types of charges
c. Give the SI units of charge and other smaller units of charges and other smaller units of charge.
d. Explain how a body become positively or negatively charged
Date posted: October 31, 2017. Answers (1)
- A boy stands 400 cm from a large wall-mirror. He then walks slowly towards the mirror at a speed of 40 cm ...(Solved)
A boy stands 400 cm from a large wall-mirror. He then walks slowly towards the mirror at a speed of 40 cm per second. What is the distance between him and his image after 5 second?
Date posted: October 31, 2017. Answers (1)
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(a)What is main purpose of the translucent screen on the pinhole camera?
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Date posted: October 31, 2017. Answers (1)
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A pin hole camera of the length 20 cm forms an image 4 cm high of a woman standing 10 m in front of the camera. What is the height of the woman?
Date posted: October 31, 2017. Answers (1)
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List two common application of plane mirrors
Date posted: October 31, 2017. Answers (1)
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Define the term magnification
Date posted: October 31, 2017. Answers (1)
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Define what is
a. Solar eclipse or eclipse of the moon
b. Annular eclipse of the sun
c. Lunar eclipse
Date posted: October 31, 2017. Answers (1)
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List four applications of convection in fluids.
Date posted: October 31, 2017. Answers (1)
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a. How does heat transfer take place in fluids?
b. Explain the terms
i. Natural convection
ii. Forced convection
Date posted: October 31, 2017. Answers (1)
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Describe how the volume and density of water changes from 0⁰c to 10⁰c
Date posted: October 31, 2017. Answers (1)
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Date posted: October 31, 2017. Answers (1)
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Define the terms
(i) Expansivity
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Date posted: October 31, 2017. Answers (1)
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When does the
a. Regular or specular reflection
b. Diffuse reflection take place?
Date posted: October 30, 2017. Answers (1)
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State the factors that determine the type of shadow formed from an object.
Date posted: October 30, 2017. Answers (1)
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What does rectilinear propagation of light mean?
Date posted: October 30, 2017. Answers (1)
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State the formula for finding the number of images formed when mirrors are placed at an angle to each other.
Date posted: October 30, 2017. Answers (1)
- State the laws of reflection for all reflecting surfaces.(Solved)
State the laws of reflection for all reflecting surfaces.
Date posted: October 30, 2017. Answers (1)
- Define the following terms as used in reflection of light (a) Incident ray (b) Angle of incidence (c) Reflected ray (d) Normal ray (e) Angle of reflection(Solved)
Define the following terms as used in reflection of light.
a. Incident ray
b. Angle of incidence
c. Reflected ray
d. Normal ray
e. Angle of reflection
Date posted: October 30, 2017. Answers (1)
- Define the terms: (a)Opaque (b)Translucent (c) Opaque (d) Umbra (e) Penumbra(Solved)
Define the terms:
a. Opaque
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c. Opaque
d. Umbra
e. Penumbra
Date posted: October 30, 2017. Answers (1)
- Define the terms : (a) Luminous sources (b) Non luminous sources(Solved)
Define the terms :
a. Luminous sources
b. Non luminous sources
Date posted: October 30, 2017. Answers (1)