Lissajous figure obtained by combining x = a sin ωt and y = a sin (ωt + π/4) will be a/an(a) ellipse(b) straight line(c) circle(d) parabola
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A ray of light travelling in the direction 1/2 (i+3j) is incident on a plane mirror. After reflection, it travels along the direction 1/2(i-2j)
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Answer:circle
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