In the diagram above, TR = TS and ∠TRS = 60o. Find the value of x
30
45
60
120
150
Correct answer is C
∠TRS = ∠RST = 60o
∠PSR + ∠PQR = 180o, 120o + xo = 180o
x = 60o
photoelectric emission
thermionic emission
radioactive emission
Held emission
secondary emission
Correct answer is B
No explanation has been provided for this answer.
In the diagram above, O is the center of the circle and ∠POR = 126°. Find ∠PQR
234o
117o
72o
63o
54o
Correct answer is B
Reflex < POR = 360° - 126° = 234°
\(\therefore\) < PQR = \(\frac{1}{2} \times 234°\)
= 117°
Which of the following organelles is used for locomotion in Paramecium?
pseudopodium
Trichocyst
Cilium
pellicle
Contractile vacuole
Correct answer is C
No explanation has been provided for this answer.
48o
45o
37o
32o
30o
Correct answer is C
∠RQT = 180° - (95° + 48°) = 73°
∠OQR = 90° - 37° = 53°
∠QOR = 180° - (53° + 53°) = 74°
QSR = 74°/2 = 37°
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