Question

1. A concave mirror forms a real and enlarged image of an object if the object is placed at/between
(a) 2F (b) F (c)F and C (d)F and P
2. When a ray goes from an optically rarer medium to a denser medium, it
(a) goes straight (b)bends away from normal
(c) bends towards normal (d) reflect back
3. A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
(a) 1020 (b) 1016 (c) 1018 (d) 1023
4. A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1, R2 and R3 respectively (Figure 5). Which of the following is true?
(a) R1 = R2 = R3
(b) R1 >R2 >R3
(c) R3 >R2 >R1
(d) R2 >R3 >R1v

pls fast today I have to submit
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Answer 1

Answer:

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Explanation:

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