(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Name two sources of infrared radiation.

State two properties of infrared radiations which differ from visible light.

State three properties of infrared radiations similar to that of visible light.

State three properties of ultra-violet radiation similar to visible light.

Give one use of electromagnetic radiation in Microwaves.

Give one use of electromagnetic radiation in Ultraviolet radiation.

Give one use of electromagnetic radiations in Infrared radiation.

Name the radiations used for the detection of fracture in bones.

State two uses of infrared radiations.

What is the wavelength of the wave whose frequency is 10¹² Hz? Name the electromagnetic wave.

(a) Name the electrical appliance shown in the diagram below.

(b) Name the material of the wire used in this device.

(c) Name two important characteristics of this wire.

An electric bulb is rated ‘240 V, 100 W’.

1. What information can you get from the above statement?
2. What will happen if this bulb is connected across 220 V?
3. Calculate the resistance of the bulb.
4. Also find the energy consumed by the bulb in 10 minutes.

Assertion (A): Ultraviolet radiations is scattered more as compared to the microwave radiations.

Reason (R): Wavelength of ultraviolet radiation is more than the wavelength of microwave radiation.

Identify the option that displays the correct wiring with correct colour code:

When a stone tied to a string is rotated in a horizontal plane, the tension in the string provides ______ force necessary for circular motion.

A non uniform beam of weight 120 N pivoted at one end is shown in the diagram below. Calculate the value of F to keep the beam in equilibrium.

1. Resistance
2. Intensity of light

Rohan conducted experiments on echo in different media. He observed that a minimum distance of 'x' meters is required for the echo to be heard in oxygen and 'y' meters in benzene. Compare 'x' and 'y'. Justify your answer.

Speed of sound in oxygen: 340 ms^-1

Speed of sound in benzene: 200 ms^-1

Below is an incomplete table showing the arrangement of electromagnetic spectrum in the increasing order of their wavelength. Complete the table:

1. Identify the radiation A.
2. Name the radiation used to detect fracture in bones.
3. Name one property common to both A and Radio waves.

Light travels a distance of '10x' units in time 't₁' in vacuum and it travels a distance of 'x' units in time 't₂' in a denser medium. Using this information answer the question that follows:

'Light covers a distance of '20x' units in time 't₁' in diamond'. State true or false.