Related Questions

একজন ছাত্র পরীক্ষাগারে অভিকর্ষজ ত্বরণের মান 9.88 m/sec2 নির্ণয় করন। অপর দিকে যখন সে 0.01 kg ভরের কোনো বাটখারাকে স্প্রিং নিক্তিতে ঝুলিয়ে দিল তখন 0.0980 N বল দেখাচ্ছে। তার পরীক্ষা অভিকর্ষজ ত্বরণের ত্রুটি নির্ণয় কর।(A student measured the value of acceleration due to gravity in the laboratory as 9.88 m/sec2. On the other hand, when he hanged a mass of 0.01 kg in the spring balance, then he found 0.0980 N force. Calculate the percentage of error in the measured value of the acceleration due to gravity.)
A -0.716%
B -0.102%
C 0.816%
D 0.102%
E -0.916%
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will
A Sink to bottom
B Float over fluid
C Partly immersed
D Be fully immersed with top surface at fluid surface
A metal with specific gravity of o floating in a fluid of same specific gravity a will
A sink to bottom
B float over fluid
C partly immersed
D be fully immersed with top surface at fluid surface
Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of
A Powder & grannular solids
B Liquids
C Low melting point semi-solids
D All of the above
During charging the specific gravity of the electrolyte of a lead-acid battery
A increases
B decreases
C remains the same
D becomes zero
Specific gravity of electrolyte in Edison cell is
A 0.8
B 0.95
C 1.1
D 1.21
With the increase of battery temperature, the specific gravity of electrolyte
A Increases
B Decreases
C Remains the same
D None of these
Specific gravity of a liquid can not be measured by a/an
A Anemometer
B Specific gravity bottle
C Pycnometer
D Hydrometer
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.
A Zero
B Minimum
C Maximum
D None of these
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.
A $$\frac{{3{\text{r}}}}{8}$$
B $$\frac{{4{\text{r}}}}{{3\pi }}$$
C $$\frac{{8{\text{r}}}}{3}$$
D $$\frac{{3{\text{r}}}}{{4\pi }}$$

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