A piece of cloth appears green in sunlight. When held in red light, it will appear
green
blue
red
black
Correct answer is D
No explanation has been provided for this answer.
28
26
24
13
Correct answer is D
M = \(\frac{v}{u} = \frac{260}{20} = 13\)
Convex spherical mirrors are preferred to plane mirrors as driving mirrors because
the image produce is upright and clearly visible
it provides a wider field of view
the image produce is errect and diminished
the image produced is not laterally inverted
Correct answer is B
No explanation has been provided for this answer.
8.7cm
10.0cm
15.4cm
17.6cm
Correct answer is D
tan 10o = \(\frac{x}{1}\)
x = 1 tan 10o = 0.176m
= 17.6cm
8.1ms-1
10.0ms-1
10.6ms-1
22.5ms-1
Correct answer is C
n = \(\frac{\sin 45}{\sin 30} = 1.4142\)
n = \(\frac{15m/s}{x}\)
x = \(\frac{15}{1.4142}\) = 10.6m/s