196: Consider the following :
1. Bluetooth device
2. Cordless phone
3. Microwave oven
4. Wi-Fi device
Which of the above can operate between 2-4 and 2-5 GHz range of radio frequency band ?
(a) 1 and 2 only
(b) 1, 2 and 4 only
(d) 3 and 4 only
(d) 1, 2, 3 and 4
Explanation:
Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands (1 MHz each) in the range 2.402 - 2.480 GHz.
Cordless phones operate on 3 different frequencies, 900 MHz, 2.4 GHz and 5 GHz.
Microwaves are electromagnetic waves with wavelengths ranging from as long as one meter to as short as one milimeter, or equivalently, with frequencies between 300 MHz (0.3 GHz) and 300 GHz.
197: Consider the following States :
I. Gujarat
II. Karnataka
III. Maharashtra
IV. Tamil Nadu.
The descending order of these States with reference to their level of Per Capita Net State Domestic Product is
(a) I, III, IV, II
(b) III, I, II, IV
(c) I, III, II, IV
(d) III, I, IV, II
Explanation:
The descending order of the states with reference to their level of per capita Net Domestic Product is Maharashtra, Gujarat, Karnataka and Tamil Nadu.
198: With reference to India's decision to levy an equalization tax of 6% on online advertisement services offered by non-resident entities, which of the following statements is/are correct?
1. It is introduced as a part of the Income Tax Act.
2. Non-resident entities that offer advertisement services in India can claim a tax credit in their home country under the "Double Taxation Avoidance Agreements".
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
199: Total internal reflection occurs when light travels from:
(a) A rarer medium to a denser medium
(b) A denser medium to a rarer medium
(c) A rarer medium to a denser medium and the angle of incidence is less than the critical angle
(d) A rarer medium to a denser medium and the angle of incidence is greater than the critical angle
200: Antyodaya scheme is meant:
(a) To help the Muslims
(b) To help the Harijans
(c) To help the minorities
(d) To help the economically weakest sections of the society