CBSE Class X – Science Physics Exam (Full Syllabus)

Commercial electric motors neglect :

The instrument that use to direct electric current in the circuit is known as:

Overloading is caused to:

The name of the effect being produced by the moving magnet

Example of permanent magnet is

To determine the direction of force experienced by a current carrying conductor placed in a uniform magnetic feld.

Commercial electric motors do not use

The phenomenon discovered by Faraday.

The instrument used for measuring electric current is:

A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is:

Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is

The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is:

Two resistors are connected in series gives an equivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Then the individual resistance are

A student drives out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1 R2 and R3 respectively. Which of the following is huge?

One horsepower (hp) is parallel to

The equivalent resistance of a series combination of two resistances is X Ohm. If the resistance are of 10 Ohm and 40 Ohm respectively, the value of X will be:

The device used to measure the internal resistance of a cell, to compare the e.m.f. of two cells and potential diference across a resistor

At noon, the Sun looks white as:

The red colour of the sun at the time of sunrise and sunset is because:

A student traces the path of a ray of light through a triangular glass prism for diferent values of angle of incidence. On analysing the ray diagrams, which one of the following conclusions is he likely to draw?

When sunlight passes through a canopy of a dense forest, tiny water droplets in the water scatter light.This is an example of

The defect in a person can see nearby objects but not far away objects

The emergent ray in a prism bend at an angle to the direction of the

The colour of the clear sky blue due to

Visible spectrum is the band of coloured components of a