4. Answer the following questions in 30-40 words:
(8 marks)
a) Distinguish between a clinical thermometer and a laboratory thermometer.
b) State the two laws of reflection,
c) Give one use of a convex mirror and a concave mirror along with the reason.
d) Complete the following ray diagram by marking the path of light rays, the formation of
the image, and labelling the pole, the centre of curvature, the principal focus, and the
aperture
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a , b, c i have given
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