1276: Match List I with List II and select the correct answer using the codes given below the Lists :
List I List II
(Characteristic) (Particle)
I. Zero mass (A) Positron
II. Fractional charge (B) Neutrino
III. Fractional spin (C) Quark
IV. Integral spin (D) Phonon
Codes :
(a) I-B, II-C, III-A, IV-D
(b) I-C, II-B, III-D, IV-A
(c) I-B, II-C, III-D, IV-A
(d) I-C, II-B, III-A, IV-D
1277: Amit has five friends : 3 girls and 2 boys. Amit's wife also has 5 friends : 3 boys and 2 girls. In how many maximum number of different ways can they invite 2 boys and 2 girls such that two of them are Amit's friends and two are his wife's ?
(A) 46
(B) 38
(C) 58
(D) 24
1278: The Brahmo Samaj is based on the principles of:
(a) Monotheism
(b) Polytheism
(c) Atheism
(d) Monism
1279: Four wires of same material and of dimensions as under as stretched by a load of same magnitude separately. Which one of them will be elongated maximum ?
(a) Wire of 1 m length and 2 mm diameter
(b) Wire of 2 m length and 2 mm diameter
(c) Wire of 3 m length and 1.5 mm diameter
(d) Wire of 1 m length and 1 mm diameter
1280: A ball bounces higher at high altitudes than in plains. This is because:
(a) The pressure on higher altitudes is lower than that in plains
(b) Downward pull due to gravity is less at higher altitudes
(c) The rarefied air offers less resistance to the ball
(d) You become more energetic at hills, so greater the force applied, higher goes the ball