List of practice Questions

Humidity means

Which among the following pair of units measure the temperature?

A bar magnet is moved towards a coil (a) slowly, (b) quickly. The induced EMF is

The magnetic field lines due to the horseshoe magnet between its poles are

A conductor moving with a speed of 20 m/s in the direction perpendicular to the direction of magnetic field of induction 0.5 T, induces an EMF of 5 V. The length of the conductor is

The material more suitable for core of the electromagnet is

An auto driver has started his auto with the help of a rope by pulling. The device used by him to convert mechanical energy to electrical energy is

The magnetic force acting on a moving charge is given by the product of three quantities, namely

Two currents 0.5 mA and 5 mA flow towards the junction in a circuit and three currents 1 mA, x and 2 mA flow away from the junction. The value of x (in mA) is

The work done by an electric force in moving a unit positive charge from one point to another point in a circuit is called

When both the length and area of cross-section of a wire are doubled, then the resistance will be

The material which has a resistivity value of about 10x10¹⁰ Ω-m at 20 °C is

Four resistors each of 1.5 Q are arranged in the form of a parallelogram. The equivalent resistance between any two opposite corners is

Volt is the SI unit of

A bulb draws a current of 0-2 A from a 220 V source. The resistance of the filament of the bulb is

A person cannot see objects clearly beyond 40 cm. The power of the lens to correct vision is

In a glass prism

Pick the correct answer from the following two statements:
(A) In VIBGYOR, wavelength increases from violet to red. 
(B) In VIBGYOR, refractive index increases from violet to red. 

The sensation of vision on the retina is carried to the brain by

For a person with myopia defect, the maximum focal length of the eye-lens is

Four equal circles, each of radius 7 cm, touch each other and a square ABCD is formed through the centres, A, B, C, D of these circles as shown in the figure. Then the area of the shaded region is

If the circumference of a circle is 22 cm, then the area of a quadrant of the circle is

In the given figure, if AB = c, AC = b and AD 1 BC, then AD =

If the ratio of the corresponding sides of two similar triangles is 2:3, then the ratio of their corresponding altitudes is