physics

For a best result using temperature to achieve an accurate measurement; it is best to use?

A. Mercury thermometer B. gas thermometer C. clinical thermometer D. alcohol thermometer Correct Answer: Option B - gas thermometer Explanation…

5 years ago

If the mechanical advantage of a machine is 4. What is its ratio of load to effort?

A. 4:01 B. 1:04 C. 5:01 D. 2:01 Correct Answer: Option A - 4:01 Explanation Mechanical advantage (M.A) of a…

5 years ago

If the velocity ratio of a machine is 5. What is its ratio of x and y?

A. 2 : 5 B. 1 : 5 C. 5 : 1 D. 3 : 1 Correct Answer: Option C…

5 years ago

If a ball released from a height of 20m. How long would it take the ball to reach the ground? (assures g = 10m/s²)

A. 2sec B. 3sec C. 35sec D. 2.4sec Correct Answer: Option A - 2sec Explanation Using the equation S =…

5 years ago

A zinc has a heat capacity of 40 J/K; what is the mass of the zinc; given that the specific heat of zinc is 380 J/kg k

A. 0.11kg B. 0.12kg C. 0.13kg D. 0.14kg Correct Answer: Option A - 0.11kg Explanation Heat capacity (o) = mass…

5 years ago

If a mango fruit dropped at a height of 50 meters. How long does it reach the ground? (take g = 10m/s²)

A. 2 sec B. 3 sec C. 4sec D. 3.2sec Correct Answer: Option D - 3.2sec Explanation From S =…

5 years ago

What type of electromagnetic radiation can be used to take photographs in the haze?

A. Radio waves B. infrared rays C. Visible light D. Gamma rays Correct Answer: Option B - infrared rays Explanation…

5 years ago

Lodestone is a natural magnet; it points at?

A. N – W when suspended freely B. N–S when suspended freely C. S – E when suspended freely D.…

5 years ago

Quantities of heat Q can be measured using a container called?

A. Thermometer B. Measuring cylinder C. Calorimeter D. Meter rule Correct Answer: Option C - Calorimeter Explanation Calorimeter is an…

5 years ago

Heat losses to the surrounding is possible through the following except?

A. Conduction B. Convection C. Radiation D. Expansion Correct Answer: Option D - Expansion Explanation Conduction, conveying of heat or…

5 years ago