The force with which the Earth attracts an object is called:
Weight of the object
The force with which Earth attracts an object is its weight, and this force is dependent on the mass of the object and the gravitational pull of Earth. Therefore, the correct answer is (d) Weight of the object.
A motorcycle has an initial velocity of 5 m/s. After 3 seconds, the velocity is 7 m/s. The displacement of the motorcycle in 3 seconds is:
The minimum power required to lift a mass of 50 kg up to a vertical distance of 8 m in 10 s is: (Take g = 10 m/s²)
Which one among the following statements is **not** correct?
A metallic sphere of mass 1 kg and volume 2 × 10-4 m³ is completely immersed in water. The buoyant force exerted by water on the sphere is:
A body floats in a liquid if the buoyant force is:
What is the colour of the light emitted by the Sun?
Lightning occur in the sky when two clouds:
With reference to street-lighting, how do sodium lamps differ from LED lamps?
1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.
2. As street lights, sodium lamps have a longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.
Select the correct answer using the code given below.
Which one of the following is a reason why astronomical distances are measured in light-years?
In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?
1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid
Select the correct answer using the code given below.