A. Lens B. Film C. Aperture D. Shutter
A. Infra-red B. Ultraviolet C. X-rays D. Gamma rays E. None of these
A. 21st March B. 24th March C. 26th March D. 25th March
A. 5-6 liters B. 3-4 liters C. 8-10 liters D. 10-12 liters
A. Convex lens B. Concave lens C. Convex-concave lens D. Concave-convex lens
A. Ultraviolet Waves B. Ultrasonic Waves C. Electromagnetic Waves D. Special Retina
A. Exosphere B. Ionosphere C. Troposphere D. Stratosphere E. Ozone layer
A. 2 B. 3 C. 0 D. 4 E. None of these
A. Heart B. Lungs C. Spleen D. Kidneys
When was the United Nations headquarters start to built? A. September 1948 B. September 1949 C. September 1950 D. September…