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General Science for RRB JE, NTPC Exam : Part 41 (in Hindi)
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Hemant Mishra is teaching live on Unacademy Plus

Hemant Mishra
Cleared RRB Clerk , SBI Clerk pre, NTPC 2016, 1 year experience in software developing along with 5 year Experience in Teaching .

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  1. RRB JE 2019 O ^ NTPC 2019, SSC CGL 2019 SCIENCE


  2. HELLO 2 k060 275.5k views Myser Hemant Mishra studyadda1988 Follow me at Unacademy for Hemant Mishra ducator since October 2017 Math Reasoning General science General knowledge r 1. Pate 2 Review 3. Share Current affairs of Railway Exams 4 Erroll 5. Save unacacemy


  3. An object and a screen are separated by 25 cm. When a convex lenses is placed between them at a distance of 5 cm. From the object, a sharp image is formed on the screen. The focal length of the lenses is? A. 20 B. 6.67 C.4 D.2


  4. An object and a screen are separated by 25 cm When a convex lenses is placed between them at a distance of 5 cm. From the object, a sharp image is formed on the screen. The focal length of the lenses is ? A. 20 B. 6.67 C.4 D.2


  5. If an object is placed at the center of curvature of a concave mirror, the position of image is? A. At the principal focus (gTT) B. Between the principal focus and the center of C. Centre of curvature ( ATI D. Beyond center of curvature 5 ) haT H3TT)


  6. If an object is placed at the center of curvature of a concave mirror, the position of image is? A. At the principal focus ) B. Between the principal focus and the center of curvature(T aphAT ) FFFF 3 C. Centre of curvature ( AT ) D. Beyond center of curvature ( RTT


  7. If an object is placed at the center of curvature of a concave mirror, the position of image is? A. At the principal focus ) B. Between the principal focus and the ocus center of curvature(T aphAT ) FFFF 3 C. Centre of curvature ( AT ) D. Beyond center of curvature ( RTT


  8. If an object is placed at the center of curvature of a concave mirror, the position of image is? A. At the principal focus ) B. Between the principal focus and the center of curvature(T aphAT ) FFFF 3 #Pic C. Centre of curvature ( AT ) D. Beyond center of curvature ( h


  9. If an object is placed at the center of curvature of a concave mirror, the position of image is? B' A. At the principal focus ) B. Between the principal focus and the A' center of curvature(T aphAT ) FFFF 3 C, Centre ofcurvature (a 40 D. Beyond center of curvature ( RTT


  10. If an object is placed at the center of curvature of a concave mirror, the position of image is? A. At the principal focus hHq0 B. Between the principal focus and thed center of curvature aphAT ) C. Centre of curvature ( AT D. Beyond center of curvature ( ) 4tdrag FFRT


  11. T(Uses of Concave Mirrors) TET (Shaving Mirror) 1 45T Tad FT IZ (Solar Furnace)


  12. A concave lens forms an image of a real object. This image is necessarily? ( TST,HterraTATAT TTT) A. Enlarged, erect and real B. Enlarged , erect and virtual (TST, HraTTA amTH TT) C. Diminished ,inverted and virtual D. Diminished, erect and virtualHTHIT) (TZT ,FrZT 3mTitzm )


  13. What is the amount of nitrogen in the atmosphere? A. 78.08 B. 20.95 . 0.93 D.0.03


  14. What is the amount of nitrogen in the atmosphere? A. 78.08 B. 20.95 . 0.93 D.0.03