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ہوم / مشق / نویں جماعت / طبیعیات / طبعی مقداریں اور پیمائش
طبعی مقداریں اور پیمائش
6 سوالات: نویں جماعت طبیعیات، جوابات اور وضاحت کے ساتھ۔
جوابی کنجی کے ساتھ قابلِ پرنٹ ورک شیٹ
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Which of these is a base quantity in the SI system?
- 1 Length
- 2 Force
- 3 Area
- 4 Speed
جواب دیکھیں
درست جواب: Length
Length is one of the seven base quantities. Force, speed and area are derived from base quantities.
-
What is the SI unit of time?
- 1 Minute
- 2 Day
- 3 Second
- 4 Hour
-
The least count of a metre rule is:
- 1 1 m
- 2 1 mm
- 3 1 cm
- 4 0.1 mm
جواب دیکھیں
درست جواب: 1 mm
A metre rule is marked in millimetres, so its least count is 1 mm.
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The least count of a vernier calliper is usually:
- 1 1 cm
- 2 0.01 cm
- 3 0.001 cm
- 4 0.1 cm
جواب دیکھیں
درست جواب: 0.01 cm
A common vernier calliper reads to 0.01 cm, or 0.1 mm.
-
What is 5 kilometres expressed in metres?
- 1 50 m
- 2 50000 m
- 3 5000 m
- 4 500 m
-
A screw gauge is mainly used to measure:
- 1 Time
- 2 The temperature of a body
- 3 Very small thickness or diameter, such as a wire
- 4 The mass of a body
جواب دیکھیں
درست جواب: Very small thickness or diameter, such as a wire
A screw gauge measures small lengths such as the diameter of a thin wire with high precision.