35cm2
154cm2
220cm2
528cm2
770cm2
Correct answer is D
TSA of a cylinder = \(2\pi r^2 + 2\pi rh\)
= \(2\pi r (r + h)\)
= \(2 \times \frac{22}{7} \times 7 (7 + 5)\)
= \(44 \times 12\)
= \(528 cm^2\)
360Hz
300Hz
250Hz
150Hz
100Hz
Correct answer is C
21/2λ = 3m; λ = 1.2m v= 300
f = v/x = 300/1.2 = 250Hz
Which of the following is/are characteristics of sound? I. Pitch
II. Loudness
III. Quality
IV. Noise
I only
II only
I and II only
l, II and III only
I, II, III and IV
Correct answer is D
No explanation has been provided for this answer.
a larger mass of air is set vibrating by the table top
the whole table vibrates in resonance
the whole table has acquired a larger frequency
the fork and table have the same frequency
the amplitude of the vibrating fork is increased.
Correct answer is C
No explanation has been provided for this answer.
8.75m
16.50m
87.75m
123.75m
330.00m
Correct answer is D
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Aptitude Tests