An object placed at a distance of 25 cm from a converging lens forms a real and inverted image at 30 cm from the lens. The magnification produced by the lens is equal to:
A-5/6
B-6/5
C6/5
D5/6
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റേഡിയോ പരിപാടികളുടെ ദീർഘദൂര പ്രക്ഷേപണം സാധ്യമാകുന്ന അന്തരീക്ഷ ഭാഗം ഏത് ?
Which of the following statements is/are true in case of an incandescent filament bulb?
- (a) Filament can be made of tungsten or nichrome.
- (b) The glass envelope covering the filament is filled with inactive gases such as nitrogen or argon.
- (c) Since the filament used is thin, its resistivity is very low.
- (d) The resistivity of the filament is low to allow more current.
- (e) The filament material used should have high melting point.
ഇന്ത്യയുടെ ദേശീയ ഹരിത ഹൈഡ്രജൻ ദൗത്യം ലക്ഷ്യമിടുന്നത് :
Identify the correct statement(s) from among the following?
- a) Resistivity of a material is dependent on the nature of the material.
- (b) Resistivity of a material is independent of the area of cross section.
- (c) Resistivity of a pure metal is more than its alloy.
ചൊവ്വയ്ക്കും വ്യാഴത്തിനും ഇടയിലായി സൂര്യനെ ഭ്രമണം ചെയ്യുന്ന ആകാശ ഗോളങ്ങൾ