(A) reverberate
(B) be heard by us faintly
(C) be heard up to 10 km from it
(D) not be heard at any distance at all from it
(A) reverberate
(B) be heard by us faintly
(C) be heard up to 10 km from it
(D) not be heard at any distance at all from it
(A) darkness
(B) red light
(C) white light
(D) yellow light
(A) 50 dioptre
(B) 1 dioptre
(C) 10 dioptre
(D) 2 dioptre
(A) capillary action phenomenon
(B) diffusion of ink through the blotting
(C) siphon action
(D) viscosity of ink
(A) storm
(B) rainfall
(C) snow
(D) intense
(A) piezo-electric effect
(B) Edison effect
(C) photoelectric effect
(D) johnson effect
(A) water
(B) diesel
(C) milk
(D) oil
(A) 1010
(B) 109
(C) 108
(D) 107
(A) neutron mass
(B) earth’s mass
(C) solar mass
(D) lunar mass
(A) small susceptibility and small retentivity
(B) large susceptibility and small retentivity
(C) large density and large retentivity
(D) small density and large retentivity