76: Optical fibre works on the principle of
(a) total internal reflection
(b) refraction
(c) scattering
(d) interference
77: Consider the following statements:
1. In the election for Lok Sabha or State Assembly, the winning candidate must get at least 50 percent of the votes polled, to be declared elected.
2. According to the provisions laid down in the Constitution of India, in Lok Sabha, the Speakers post goes to the majority party and the Deputy Speakers to the Opposition.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
78: Which one of the following Indian leaders was dismissed by the British from the Indian Civil Service ?
(a) Satyendranath Tagore
(b) Surendranath Banerji
(c) R. C. Dutt
(d) Subhash Chandra Bose
79: Acceleration due to gravity on moon is 0.166 times than that on the earth. A man weighing 60 kg on earth would weigh _______ kg on moon.
(a) 16.6 kg
(b) 30 kg
(c) 60 kg
(d) 10 kg
80: There has been a persistent deficit budget year after year. Which of the following actions can be taken by the government to reduce the deficit?
1. Reducing revenue expenditure
2. Introducing new welfare schemes
3. Rationalizing subsidies
4. Expanding industries
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 2 and 3 only
(c) 1 only
(d) 1, 2, 3 and 4