Answers The change of the direction of a wave-front because of a change in the velocity… The change of the direction of a wave-front because of a change in the velocity of the wave in another medium is called A. refraction B. reflection C. diffraction D. interference E. dispersion Correct Answer: Option C Explanation
Answers Two forces 6N and 8N, act eastwards and northwards respectively on a body. Calculate the… Two forces 6N and 8N, act eastwards and northwards respectively on a body. Calculate the magnitude of their… Read More
Answers Fill the gap with the most appropriate option from the list following the gap. ……… Fill the gap with the most appropriate option from the list following the gap. …… we can now… Read More
Answers A sow is normally expected to farrow A sow is normally expected to farrow A. once a year B. once in two years C. twice… Read More
Answers In the mammalian respiratory system, exchange of gases occurs in the In the mammalian respiratory system, exchange of gases occurs in the A. lungs B. bronchi C. bronchioles D.… Read More
Answers A microscope is focused on a mark on a table, when the mark is covered… A microscope is focused on a mark on a table, when the mark is covered by a plate… Read More