UPSC Physics

1. Speed- scalar
2. Velocity- vector
3. Acceleration- vector

Select the correct answer from the codes given below:

1. Magnetic field around conductor – right-hand thumb rule.
2. Force on current-carrying conductor – Fleming right-hand rule.
3. Electric generator – electromagnetic induction.
4. Electric motor – magnetic effect.

Select the correct option from the codes given below:

1. It is determined by Fleming’s Left Hand Rule.
2. The concept was originally established by Alexandra Volta.

Which of the above statements is/are correct?

1. Solar cookers achieve a higher temperature by using mirrors to focus the rays of the Sun.
2. They work on the principle that a black surface absorbs more heat.

Select the correct answer using the codes given below:

1. Twinkling of stars
2. Tyndall effect
3. Advance sunrise and delayed sunset

Select the correct answer from the codes given below:

1. It is the rate of flow of electric charges.
2. Its SI unit is Ampere.
3. It is measured using an ammeter.

Which of the above statements is/are correct?

1. Magnetic field is a quantity that has magnitude but not direction.
2. The direction of the magnetic field is taken to be the direction in which a north pole of the compass needle moves inside it.
3. The relative strength of the magnetic field is shown by the degree of closeness of the field lines.

Which of the above statements is / are correct?

1. It is a device to listen the heart beat.
2. It consists of a chest piece that carries a sensitive diaphragm.

Select the correct answer from the codes given below:

1. Change in magnetic field produces induced current.
2. Flow of current in a conductor produces magnetic field.
3. Magnetic field related to a coil can be produced by motion between conductor and coil.

Select the correct option from the codes given below:

1. GPS navigation
2. Internet synchronization
3. Determining the accurate position of planets

Select the correct answer using the codes given below: