Motion and Rest

Q. When the electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

1. The heating effect of current.
2. The lighting effect of current.
3. The magnetic effect of current.
4. The chemical effect of current.

Q.

When is a body said to be at rest?

Q.

HOW DOES ATMOSPHERIC PRESSURE HELP US ?

Q. Will you be able to drink water in space using a straw? Why/ Why not ?

Q.

A man is sitting in a train which is moving. The man is

1. in the state of rest

2. in the state of motion

3. at rest with respect to a man sitting in the train next to him

4. in motion with respect to a man standing on the ground outside the train

Q.

When an electric current is passed through a conducting solution, there is a change in the colour of the solution. This indicates:

1. the chemical effect of current

2. the heating effect of current

3. the magnetic effect of current

4. the lightning effect of current

Q.

Why wings of fan are usually rectangle or oval in shape?

Q.

A person travelling with you in a bus is at rest. Do you agree with the statement?

Q. Why we are not crushed under the weight of atmospheric pressure ?

Q.

Which statement describes completely "a body at rest"?

1. when a body does not change its position with time

2. when a body does not change its position with respect to the surroundings

3. when a body does not change its position with respect to the time and surroundings

4. none of the above.

Q. A pressure of $2{\text{Nm}}^{-2}$ is applied over a surface area of $4m^2$. Calculate the total force acting on the surface.

1. $10\text{N}$
2. $2\text{N}$
3. $8\text{N}$
4. $4\text{N}$

Q. Will you be able to drink water in space using a straw? Why or why not

Q. If you have to move your head while looking at an object, it is in motion.

1. True
2. False

Q. Air drag can be reduced by designing vehicles having streamlined shapes.

1. True
2. False

Q. Air drag can be reduced by designing vehicles having streamlined shapes.

1. True
2. False

Q.

A man is sitting in a train which is moving. The man is

1. in the state of rest

2. in the state of motion

3. at rest with respect to a man sitting in the train next to him

4. in motion with respect to a man standing on the ground outside the train

Q. The least distance of distinct vision for a young adult with normal vision is:

1. 25 m
2. 25 cm
3. 10 m
4. 10 cm

Q. To describe motion, we need a frame of reference.

1. True
2. False

Q. A body is said to be at rest if it does not change its position with respect to the reference point.

1. False
2. True

Q. Identify the point where the greatest pressure is acting. Assume all the funnels contain the same liquid.

1. Point A
2. Point B
3. Point C
4. Point D

Q. When an object doesn't change its position with respect to its surroundings and time, it is said to be at rest.

1. True
2. False

Q. The bulb in the circuit does not glow when pure water is used as solution. Which of the following can be added to water to make the bulb glow?

1. Sand
2. Sugar
3. Honey
4. Salt

Q. _________ controls the amount of light entering the eye.

Q. Fighter jets have a streamlined body in order to ___________ .

1. reduce cost
2. reduce air resistance
3. improve aesthetics
4. None of the above

Q. The state of a body is determined with the help of a reference point.

1. False
2. True

Q. A lamp in a moving train is in motion with respect to a passenger sitting in the train.

1. False
2. True

Q. In the below scenario, the rise of liquid in the straw is due to

1. Pressure of water
2. Gravity of the earth
3. Shape of the rubber bulb
4. Atmospheric pressure

Q. Which of the following is the SI unit of force?

1. Joule
2. Newton
3. Kelvin
4. Pascal