Question

•As we go away from the concave mirror, the size of an image_____


•Find the odd one. *
A. flood lights
B. dentist's mirror
C. torch
D. side mirrors of a car

•Out of following crystalline compounds which has seven molecules of water of crystallisation? *
A. blue vitriol
B. ferrous sulphate
C. washing soda
D. alum

•The pH value of oxygenated blood is____​

Answer 1

Answer:

Reflection from a Concave Mirror

torch

washing soda

alkaline

Explanation:

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Answer 2

Explanation:

As we move away from a concave mirror, the size of the image formed by the mirror can either increase, decrease or remain the same, depending on the position of the object with respect to the focal point of the mirror.

The odd one out is B. dentist's mirror.

The correct option is D. alum.

The pH value of oxygenated blood is approximately 7.4

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