Infrared radiation is a form of electromagnetic radiation used for short-range communication in many consumer electronic devices like TV remotes.
To operate a T.V. set, a remote control unit uses which of the following?
Asked in UPPSC Upper Mains 2013 · Topic: Wave Motion (Electromagnetic Waves: Properties, Electromagnetic Spectrum, Energy and Momentum)
More Physics questions
- In Microwave oven, the microwave tube used is:
- Which of the following has longest wave- length:
- Which of the following electromagnetic waves have the smallest wavelength?
- Which is the correct ascending order of the electromagnetic spectrum in terms of increasing frequency?
- Microwave ovens are very popular cooking devices. Which of the following statements about microwave heating is/are correct? (i) Microwaves are ionizing radiation and therefore they heat the food faster. (ii) Microwaves are a form of electromagnetic radiation. (iii) Microwaves cause water molecules in food to vibrate, producing heat that cooks the food. (iv) Microwave cooking is beneficial but it is lesser energy efficient than conventional cooking. Select the correct option using the codes given below.
- Which type of waves/rays are used to know fracture in bones ?
- Which of the following is the correct order of electromagnetic waves in ascending order of their wavelength?
- Which of the following is a form of electromagnetic radiation emitted during solar flares?