The image of a candle flame placed at a distance of 40 cm from a spherical lens is formed on a screen placed on the other side of the lens at a distance of 4 0cm from the lens. Identify the type of lens and write its focal length. What will be the nature of image formed if the candle flame is shifted 25 cm towards the lens? Draw ray diagram to justify your answer.
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Out of H2PO2, H2PO2 and H2PO4 which has the maximum number of P - H bonds?
In the first case all the hydrogen atoms are attached to oxygen atom as OH group from which hydrogen can be easily released as protons.
Hence,the acidity will be the highest.
As electron density of the O—H bond decreases, the bond becomes more polar.
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Explanation:
Given: Object distance, u=-36
Image distance, V=+72
The image is Real and is depicted with the help of positive sign.
height of the object, h1 = 2.5 cm
Applying the lens formula, we get
Since the focal length is positive, so the lens will be a convex lens of focal length 24 cm.
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