Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. A small candle, 2.5 cm in size is placed at 27cm in front of a concave mirror of radius of curvature 36cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?
Answer
The Size of the candle h=2.5cm
Image size=h'
Object distance, u=-27cm
Radius of curvature of the concave mirror, R=-36cm
Focal length of the concave mirror,
Image distance=v
The image distance is able to be obtained using the mirror formula:
Thus, the screen must be placed 54 cm away from the mirror to obtain a sharp image.
The exaggeration of the image is given as:
The height of the candle 'spictureis 5cm. The negative sign signify that the image is inverted and virtual.
If the candle is moved closer to the mirror after that the screen will have to be moved away from the mirror in order to obtain the image.
Explain Joule's Law: "Work done is directly proportional to the heat produced.
..
How then do I recognize a product's quality? There are some ways. The status and name of the company making the product is significant and its geographical location. Several co
How do you magnetize metal? You can rub a magnet with the metal in single direction for a bunch of times (the more the better), and that will magnetize it to some degree, but i
what are characteristics of resistances
The rate of change of angular velocity with related to time is known as angular acceleration.
Q. A managing wire of length 2m has a diameter of 0.4 mm with a resistance of 70 ohm. Find its resistivity. ρ = ( P X πr 2 ) / L = ( 70 X 22 X 2 X 10 -4 X 2
Negative feedback principle: The idea that in a system where there are self-propagating conditions, those new conditions tend to act against earlier existing circumstances. Su
In the circuit shown in Figure, with the switch in position 1, the capacitor is uncharged. If he switch is moved to position 2 at time t =0s, measure (i) The initial curren
PROJECTILE: "When a body is thrown upward making a particular angle 'Q' with the horizontal and moves freely under the action of gravity, it is known as a projectile". EXAMP
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd