Question

1. Fill in the blanks:
(1 man
a) The mode of heat transfer that can take place in vacuum is
b) The focal length of a spherical mirror is
of its radius of curvature
2. Choose the correct option:
(1 ma
Which of the following positions of the object lead to the formation of a virtual im
using a concave mirror?
(1) at the centre of curvature (ii) between the centre of curvature and the foc
(iii) at the focus
vil between the focus and the pole
3. Answer the following questions in 10-20 words:
(2 ma
a) Define refraction.
b) A marble tile feels cold as compared to a wooden tile on a winter morning. Why?
Answer the following questions in 30-40 words:
(8 m
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 forma​

Answer 1

Answer:

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