Wrack your brain: Practice Questions
Mind-Bending Science Quiz
Test your knowledge with our engaging quiz that challenges your understanding of various scientific concepts. From mechanics to optics, each question prompts you to think critically and applies real-world scenarios to science.
Join us and discover:
- The fascinating principles behind everyday phenomena
- How well you grasp fundamental science concepts
- Fun facts and insights as you answer each question
A batsman hits the ball for a boundary past the bowler I.e. Four runs. The batsman thus
Changes the direction & speed of the ball
Does not change the direction but speed only
Does not change the speed but direction only
Does not change either direction or speed
At an amusement park, a capsule in a free fall tower ride has a huge magnet fitted to its base. The capsule is prevented from hitting the ground by a powerful magnet, placed at the bottom of the ride. Which force will be used to prevent the capsule from hitting the ground?
Gravitational force
Repulsive force between the magnets
Attractive force between the magnets
Electrostatic force
Kartiki stand in front of a plane mirror. The distance between Kartiki and her image in the plane mirror is 20 m. How much distance should he move in order to get the distance of 15 m between herself and her image?
img
7.5 m away from the mirror
2.5 m away from the mirror
7.5 m towards the mirror
2.5 m towards the mirror
Lowest part of the footwear is not plain and smooth. They are grooved to make the surfaces rough
Rough surface gives enough grip while moving.
This decreases friction
Both A and B are correct.
None of the above.
While smoothing the surface, the grinding stone produces spark. It is due to
Light energy produces due to friction
Heat energy is produced due to friction changes to light energy.
The material starts burning by heat.
None of the above.
Atmospheric pressure is experienced by us but we don't feel it. This is because
It gets neutralized by gravity.
Pressure inside our body is equalized to atmospheric pressure.
As the surface area of our body is larger than atmospheric pressure.
None of the above.
If the angle between mirror and incident ray is 50°, then calculate the angle between the incident ray and the reflected ray.
img2
100 degrees
50 degrees
80 degrees
130 degrees
A water tank has four taps fixed at points A, B, C, D as shown in figure. The water will flow out at the same pressure from taps at ____
img3
A and B
C and D
A and C
B and C
When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to _______
Pressure of water
Gravity of the earth
Shape pf the bulb
Atmospheric pressure
A balloon is filled with water and tied a knot. Small amount of air remained in the balloon while tying a knot. When the balloon is placed in large container with water, what will happen?
Balloon will sink due to pressure of air inside it
Balloon will float because the pressure inside balloon is less than the thrust applied by water
Balloon will be completely immersed in water but floating because the air is very small compared to amount of water
Can’t say.
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