Rohit carried out an experiment to test the hardness of objects 1, 2 and 3. The results of the experiment are shown here.
Which of the following shows the correct order of hardness of 1, 2 and 3, starting from the hardest?
A1, 2, 3
B1, 3, 2
C2, 3, 1
D3, 1, 2
We need a diminished image of an object on a screen 1 m away from it. This can be achieved by approximately placing a
A convex mirror of suitable focal length.
B concave mirror of suitable focal length.
C concave lens of focal length less than 0.25 m
D concave lens of suitable focal length
The answer given by me is D but they say it's wrong.
All of the liquid from a test tube is poured into a beaker,
Compared to the liquid that was in the test tube, the liquid in the beaker has
Aa different volume, but the same shape
Ba different volume and a different shape
Cthe same volume, but a different shape
Dthe same volume and the same shape
Which factor will most likely cause a decrease in the force of attraction between two magnets?
A increasing the size of the two magnets
B increasing the distance between the two magnets
C changing the color of the two magnets
D changing the texture of the two magnets
I revolve around the Sun. I am first member of the solar system. I am the hottest of all other members. What am I ?