- A

- B

- ✓

- D







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Identify the paramagnetic substance
|
(a) Iron |
(b) Aluminium |
(c) Nickel |
(d) Hydrogen |
Monochromatic green light of wavelength 5 illuminates a pair of slits 1 mm apart. The separation of bright lines on the interference pattern formed on a screen 2 m away is
|
(a) 0.25 mm |
(b) 0.1 mm |
(c) 1.0 mm |
(d) 0.01 mm |
'Albedo' is
|
(a) Reflecting power of a heavenly body |
|
(b) Transmitive power of a heavenly body |
|
(c) Absorptive power of a heavenly body |
|
(d) Refracting power of a heavenly body |
The radius of a nucleus of a mass number A is directly proportional to
|
(a) |
(b) A |
(c) |
(d) |
When light is refracted from air into glass
|
(a) Its wavelength and frequency both increase |
|
(b) Its wavelength increases but frequency remains unchanged |
|
(c) Its wavelength decreases but frequency remains unchanged |
|
(d) Its wavelength and frequency both decrease |