3016: A stone is tied to a rope and attached to a wooden bar which rotates at constant angular velocity. Suddenly the bar is stopped. The stone gets encircled around the bar. What happens to the angular velocity of the stone.
(a) Increases
(b) Decreases
(c) Remains the same
(d) First increases and then decreases
3017: A redistribution of income in a country can be best brought about through
(a) progressive taxation combined with progressive expenditure
(b) progressive taxation combined with regressive expenditure
(c) regressive taxation combined with regressive expenditure
(d) regressive taxation combined with progressive expenditure
3018: Gerontology is the study of:
(a) Process of ageing
(b) Growth of cells
(c) Birds
(d) Vegetables
3019: Arrange the following in a chronological order:
(i) Surat Split
(ii) Formation of Muslim League
(iii) Partition of Bengal
(iv) Regulating Act
(a) (i). (ii), (iii), (iv)
(b) (iv), (iii), (ii), (i)
(c) (ii), (i), (iv), (iii)
(d) (ii), (iii), (iv), (i)
3020: A radioactive substance has a half-life of four months. Three-fourth of the substance would decay in
(a) 3 months
(b) 4 months
(c) 8 months
(d) 12 months