The type of glass used in making lenses and prism is___________?
A. Pyrex glass
B. jena glass
C. Flintglass
D. Soft glass
A. Pyrex glass
B. jena glass
C. Flintglass
D. Soft glass
A term biotype means ___________?
A. all individuals having same phenotype
B. all individuals having same genotype
C. all individual with different phenotype
D. all individuals with different genotype
A. 34-40
B. 17-30
C. 45-55
D. 10-17
The term ‘Blue Shift’ is used to indicate?
A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
B. Turning a star from white to blue
C. In future sun would become blue
D. Black hole was blue at its start
E. None of these
A. Because the sunlight falling on it is scattered.
B. Because the sunlight falling on it is absorbed.
C. Because the sunlight falling on it is refracted.
D. Because the sunlight falling on it is reflected.
“The ocean looks blue because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned. Same reason the sky is blue.”
A. Zero
B. 32
C. 36
D. None of these
A. Hurricane
B. Tornado
C. Typhoon
D. None of these