Physics 10th Class English Medium Online Test With Answers

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Physics 10th Class English Medium Online Test

Sr. # Questions Answers Choice
1 In a convex mirror the size of the image: Is smaller than the size of the object Is greater than the size of the object Depends upon the position of the object Is equal to the size of the object
2 The speed of sound in the air at one atmospheric pressure at room temperature is: 343 ms-1 346 ms-1 349 ms-1 339 ms-1
3 To hear echo, the distance between the observer and the obstacle is 17m then how much distance will the sound travel? 60m 54m 17m 34m
4 After how much time the echo must be heard? 0.1 s 0.10 s 0.20 s 0.50 s
5 Mathematical formula of sound level (in bel) is: S.L = 10 log I/Io (bel) S.L = K log I/Io (bel) S.L = Log I/Io (bel) S.L = 10 log Io/I (bel)
6 If the intensity of faintest audible sound is Io and of another sound is I then sound level will be: K log Io/I Log Io/I 2K K log Io/I2 K log I/Io
7 The difference between the loudness of faintest audible sound and loudness of another sound is called: Pitch of sound Quality of sound Sound level Intensity of sound
8 The S.I unit of intensity of sound is: Wm Wm2 Wm-2 Wm-1
9 High pitch means: High wavelength High frequency High time period High energy
10 Pitch of sound depends upon: Frequency Amplitude Intensity Time period
11 The character by which lound and faint sound can be distinguished is called: Pitch Quality Loudness Intensity
12 The distance between two consecutive compressions or rarefactions in longitudinal waves is called: Amplitude Wavelength Half wavelength 1/4 wavelength
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